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* [PATCH v2] Add tab completion for ALTER TABLE … ADD …
@ 2021-08-03 11:23 Dagfinn Ilmari Mannsåker <[email protected]>
0 siblings, 0 replies; 9+ messages in thread
From: Dagfinn Ilmari Mannsåker @ 2021-08-03 11:23 UTC (permalink / raw)
Complete with COLUMN plus the various table constraint types, list
unique indexes on the table after ADD (UNQIUE|PRIMARY KEY) USING INDEX,
and data types after ADD [COLUMN] <column_name>.
---
src/bin/psql/tab-complete.c | 49 +++++++++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)
diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c
index 7cdfc7c637..bb7c3fc5cf 100644
--- a/src/bin/psql/tab-complete.c
+++ b/src/bin/psql/tab-complete.c
@@ -776,6 +776,10 @@ static const SchemaQuery Query_for_list_of_collations = {
" and pg_catalog.quote_ident(c1.relname)='%s'"\
" and pg_catalog.pg_table_is_visible(c2.oid)"
+#define Query_for_unique_index_of_table \
+Query_for_index_of_table \
+" and i.indisunique"
+
/* the silly-looking length condition is just to eat up the current word */
#define Query_for_constraint_of_table \
"SELECT pg_catalog.quote_ident(conname) "\
@@ -2019,6 +2023,51 @@ psql_completion(const char *text, int start, int end)
"OWNER TO", "SET", "VALIDATE CONSTRAINT",
"REPLICA IDENTITY", "ATTACH PARTITION",
"DETACH PARTITION", "FORCE ROW LEVEL SECURITY");
+ /* ALTER TABLE xxx ADD */
+ else if (Matches("ALTER", "TABLE", MatchAny, "ADD"))
+ COMPLETE_WITH("COLUMN", "CONSTRAINT", "CHECK", "UNIQUE", "PRIMARY KEY",
+ "EXCLUDE", "FOREIGN KEY");
+ /* ALTER TABLE xxx ADD CONSTRAINT yyy */
+ else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny))
+ COMPLETE_WITH("CHECK", "UNIQUE", "PRIMARY KEY", "EXCLUDE", "FOREIGN KEY");
+ /* ALTER TABLE xxx ADD (CONSTRAINT yyy)? FOREIGN|PRIMARY */
+ else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "FOREIGN|PRIMARY") ||
+ Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny, "FOREIGN|PRIMARY"))
+ COMPLETE_WITH("KEY");
+ /* ALTER TABLE xxx ADD (CONSTRAINT yyy)? (PRIMARY KEY|UNIQUE) */
+ else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "PRIMARY", "KEY") ||
+ Matches("ALTER", "TABLE", MatchAny, "ADD", "UNIQUE") ||
+ Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny, "PRIMARY", "KEY") ||
+ Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny, "UNIQUE"))
+ COMPLETE_WITH("(", "USING INDEX");
+ /* ALTER TABLE xxx ADD (CONSTRAINT yyy)? ... USING INDEX */
+ else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "PRIMARY", "KEY", "USING", "INDEX"))
+ {
+ completion_info_charp = prev6_wd;
+ COMPLETE_WITH_QUERY(Query_for_unique_index_of_table);
+ }
+ else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "UNIQUE", "USING", "INDEX"))
+ {
+ completion_info_charp = prev5_wd;
+ COMPLETE_WITH_QUERY(Query_for_unique_index_of_table);
+ }
+ else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny,
+ "PRIMARY", "KEY", "USING", "INDEX"))
+ {
+ completion_info_charp = prev8_wd;
+ COMPLETE_WITH_QUERY(Query_for_unique_index_of_table);
+ }
+ else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny,
+ "UNIQUE", "USING", "INDEX"))
+ {
+ completion_info_charp = prev7_wd;
+ COMPLETE_WITH_QUERY(Query_for_unique_index_of_table);
+ }
+ /* ADD column_name must be last of the ALTER TABLE xxx ADD matches */
+ else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "COLUMN", MatchAny) ||
+ (Matches("ALTER", "TABLE", MatchAny, "ADD", MatchAny) &&
+ !Matches("ALTER", "TABLE", MatchAny, "ADD", "COLUMN")))
+ COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes, NULL);
/* ALTER TABLE xxx ENABLE */
else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE"))
COMPLETE_WITH("ALWAYS", "REPLICA", "ROW LEVEL SECURITY", "RULE",
--
2.30.2
--=-=-=--
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Add SPLIT PARTITION/MERGE PARTITIONS commands
@ 2024-03-19 14:43 Dmitry Koval <[email protected]>
0 siblings, 1 reply; 9+ messages in thread
From: Dmitry Koval @ 2024-03-19 14:43 UTC (permalink / raw)
To: stephane tachoires <[email protected]>; [email protected]
Hi!
> The following review has been posted through the commitfest application:
> make installcheck-world: tested, passed
Thanks for info!
I was unable to reproduce the problem and I wanted to ask for
clarification. But your message was ahead of my question.
--
With best regards,
Dmitry Koval
Postgres Professional: http://postgrespro.com
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Add SPLIT PARTITION/MERGE PARTITIONS commands
@ 2024-03-26 23:39 Alexander Korotkov <[email protected]>
parent: Dmitry Koval <[email protected]>
0 siblings, 1 reply; 9+ messages in thread
From: Alexander Korotkov @ 2024-03-26 23:39 UTC (permalink / raw)
To: Dmitry Koval <[email protected]>; +Cc: stephane tachoires <[email protected]>; [email protected]
On Tue, Mar 19, 2024 at 4:43 PM Dmitry Koval <[email protected]> wrote:
> Thanks for info!
> I was unable to reproduce the problem and I wanted to ask for
> clarification. But your message was ahead of my question.
I've revised the patchset. I mostly did some refactoring, code
improvements and wrote new comments.
If I apply just the first two patches, I get the same error as [1].
This error happens when createPartitionTable() tries to copy the
identity of another partition. I've fixed that by skipping a copy of
the identity of another partition (remove CREATE_TABLE_LIKE_IDENTITY
from TableLikeClause.options). BTW, the same error happened to me
when I manually ran CREATE TABLE ... (LIKE ... INCLUDING IDENTITY) for
a partition of the table with identity. So, this probably deserves a
separate fix, but I think not directly related to this patch.
I have one question. When merging partitions you're creating a merged
partition like the parent table. But when splitting a partition
you're creating new partitions like the partition being split. What
motivates this difference?
Links.
1. https://www.postgresql.org/message-id/171085360143.2046436.7217841141682511557.pgcf%40coridan.postgr...
------
Regards,
Alexander Korotkov
Attachments:
[application/octet-stream] 0003-Documentation-for-ALTER-TABLE-SPLIT-PARTITION-ME-v26.patch (9.2K, ../../CAPpHfdsVQwnZPxaQPwcu1g_01F0d-o=ECRcf14X3CmavJB6vSQ@mail.gmail.com/2-0003-Documentation-for-ALTER-TABLE-SPLIT-PARTITION-ME-v26.patch)
download | inline diff:
From 6344afb8ff139037f3258835bc86df5371d62a7e Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Tue, 28 Mar 2023 10:50:19 +0300
Subject: [PATCH 3/4] Documentation for ALTER TABLE SPLIT PARTITION/MERGE
PARTITIONS commands
---
doc/src/sgml/ref/alter_table.sgml | 124 +++++++++++++++++++++++++++++-
1 file changed, 121 insertions(+), 3 deletions(-)
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 6cdcd779ef8..35a0d914917 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,13 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO
+ (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT },
+ PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
+ INTO <replaceable class="parameter">partition_name</replaceable>
<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>
@@ -1118,14 +1125,99 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-split-partition">
+ <term><literal>SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }, PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])</literal></term>
+
+ <listitem>
+ <para>
+ This form split a single partition of the target table. Hash-partitioning
+ is not supported. Bounds of new partitions should not overlap with new and
+ existing partitions (except <replaceable class="parameter">partition_name</replaceable>).
+ If the split partition is DEFAULT partition, one of new partitions must be DEFAULT.
+ In case one of new partitions or one of existing partitions is DEFAULT,
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have spaces
+ between partitions bounds. If the partitioned table does not have a DEFAULT
+ partition, the DEFAULT partition can be defined as one of the new partitions.
+ </para>
+ <para>
+ In case new partitions do not contains DEFAULT partition and the partitioned table
+ does not have a DEFAULT partition, the following must be true: sum bounds of
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... should be
+ equal to bound of split partition <replaceable class="parameter">partition_name</replaceable>.
+ One of the new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have
+ the same name as split partition <replaceable class="parameter">partition_name</replaceable>
+ (this is suitable in case of splitting a DEFAULT partition: we split it, but after
+ splitting we have a partition with the same name).
+ Only simple, non-partitioned partition can be split.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="sql-altertable-merge-partitions">
+ <term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
+
+ <listitem>
+ <para>
+ This form merge several partitions into one partition of the target table.
+ Hash-partitioning is not supported. If DEFAULT partition is not in the
+ list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ For range-partitioned tables is necessary that the ranges
+ of the partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] can
+ be merged into one range without spaces and overlaps (otherwise an error
+ will be generated). The combined range will be the range for the partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For list-partitioned tables the values lists of all partitions
+ <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] are
+ combined and form a list of values of partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ If DEFAULT partition is in the list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ The partition <replaceable class="parameter">partition_name</replaceable>
+ will be the DEFAULT partition.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For range- and list-partitioned tables the ranges and lists of values
+ of the merged partitions can be any.
+ </para>
+ </listitem>
+ </itemizedlist>
+ The new partition <replaceable class="parameter">partition_name</replaceable>
+ can have the same name as one of the merged partitions. Only simple,
+ non-partitioned partitions can be merged.
+ </para>
+ </listitem>
+ </varlistentry>
+
</variablelist>
</para>
<para>
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
- <literal>ATTACH PARTITION</literal>, and
- <literal>DETACH PARTITION</literal> can be combined into
+ <literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
+ <literal>SPLIT PARTITION</literal>, and <literal>MERGE PARTITIONS</literal>
+ can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1368,7 +1460,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<term><replaceable class="parameter">partition_name</replaceable></term>
<listitem>
<para>
- The name of the table to attach as a new partition or to detach from this table.
+ The name of the table to attach as a new partition or to detach from this table,
+ or the name of split partition, or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1784,6 +1877,31 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To split a single partition of the range-partitioned table:
+<programlisting>
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2023 INTO
+ (PARTITION sales_feb2023 FOR VALUES FROM ('2023-02-01') TO ('2023-03-01'),
+ PARTITION sales_mar2023 FOR VALUES FROM ('2023-03-01') TO ('2023-04-01'),
+ PARTITION sales_apr2023 FOR VALUES FROM ('2023-04-01') TO ('2023-05-01'));
+</programlisting></para>
+
+ <para>
+ To split a single partition of the list-partitioned table:
+<programlisting>
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+</programlisting></para>
+
+ <para>
+ To merge several partitions into one partition of the target table:
+<programlisting>
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central)
+ INTO sales_all;
+</programlisting></para>
+
</refsect1>
<refsect1>
--
2.39.3 (Apple Git-145)
[application/octet-stream] 0004-SPLIT-PARTITION-optimization-v26.patch (41.3K, ../../CAPpHfdsVQwnZPxaQPwcu1g_01F0d-o=ECRcf14X3CmavJB6vSQ@mail.gmail.com/3-0004-SPLIT-PARTITION-optimization-v26.patch)
download | inline diff:
From 4ac9d761f197508dba213265259b86a859989db7 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Thu, 26 Oct 2023 03:35:24 +0300
Subject: [PATCH 4/4] SPLIT PARTITION optimization
---
src/backend/commands/tablecmds.c | 677 +++++++++++++-----
src/test/regress/expected/partition_split.out | 307 ++++++++
src/test/regress/sql/partition_split.sql | 152 ++++
3 files changed, 974 insertions(+), 162 deletions(-)
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index ef944e3733b..8d45851c3b7 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -20876,20 +20876,47 @@ typedef struct SplitPartitionContext
BulkInsertState bistate; /* state of bulk inserts for partition */
TupleTableSlot *dstslot; /* slot for insert row into partition */
Relation partRel; /* relation for partition */
+ SinglePartitionSpec *sps; /* info about single partition (from SQL
+ * command) */
} SplitPartitionContext;
+/*
+ * Struct with context of SPLIT PARTITION operation
+ */
+typedef struct SplitInfo
+{
+ PartitionCmd *cmd; /* SPLIT PARTITION command info */
+
+ Relation rel; /* partitioned table */
+ Relation splitRel; /* split partition */
+
+ Oid defaultPartOid; /* identifier of DEFAULT-partition in rel (if
+ * exists) */
+ List *partContexts; /* list of structs SplitPartitionContext (each
+ * struct for each new partition) */
+ SplitPartitionContext *defaultPartCtx; /* pointer to DEFAULT-partition in
+ * partContexts list (if exists) */
+ EState *estate; /* working state */
+} SplitInfo;
/*
- * createSplitPartitionContext: create context for partition and fill it
+ * createSplitPartitionContext: create context for partition
*/
static SplitPartitionContext *
-createSplitPartitionContext(Relation partRel)
+createSplitPartitionContext(SinglePartitionSpec * sps)
{
- SplitPartitionContext *pc;
+ SplitPartitionContext *pc = (SplitPartitionContext *) palloc0(sizeof(SplitPartitionContext));
- pc = (SplitPartitionContext *) palloc0(sizeof(SplitPartitionContext));
- pc->partRel = partRel;
+ pc->sps = sps;
+ return pc;
+}
+/*
+ * fillSplitPartitionContext: fill partition context
+ */
+static void
+fillSplitPartitionContext(SplitPartitionContext * pc)
+{
/*
* Prepare a BulkInsertState for table_tuple_insert. The FSM is empty, so
* don't bother using it.
@@ -20900,67 +20927,66 @@ createSplitPartitionContext(Relation partRel)
pc->dstslot = MakeSingleTupleTableSlot(RelationGetDescr(pc->partRel),
table_slot_callbacks(pc->partRel));
ExecStoreAllNullTuple(pc->dstslot);
-
- return pc;
}
/*
* deleteSplitPartitionContext: delete context for partition
*/
static void
-deleteSplitPartitionContext(SplitPartitionContext *pc, int ti_options)
+deleteSplitPartitionContext(SplitPartitionContext *pc)
{
- ExecDropSingleTupleTableSlot(pc->dstslot);
- FreeBulkInsertState(pc->bistate);
+ if (pc->dstslot)
+ ExecDropSingleTupleTableSlot(pc->dstslot);
+
+ if (pc->bistate)
+ {
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
- table_finish_bulk_insert(pc->partRel, ti_options);
+ FreeBulkInsertState(pc->bistate);
+ table_finish_bulk_insert(pc->partRel, ti_options);
+ }
pfree(pc);
}
/*
- * moveSplitTableRows: scan split partition (splitRel) of partitioned table
- * (rel) and move rows into new partitions.
+ * createSplitInfo: create SPLIT PARTITION command context, contexts for new
+ * partitions and generate constraints for them.
+ * We need to use constraints for optimization.
*
- * New partitions description:
- * partlist: list of pointers to SinglePartitionSpec structures.
- * newPartRels: list of Relation's.
+ * cmd: SPLIT PARTITION command info.
+ * rel: partitioned table.
+ * splitRel: split partition.
* defaultPartOid: oid of DEFAULT partition, for table rel.
*/
-static void
-moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPartRels, Oid defaultPartOid)
+static SplitInfo *
+createSplitInfo(PartitionCmd *cmd, Relation rel, Relation splitRel,
+ Oid defaultPartOid)
{
- /* The FSM is empty, so don't bother using it. */
- int ti_options = TABLE_INSERT_SKIP_FSM;
- CommandId mycid;
- EState *estate;
- ListCell *listptr,
- *listptr2;
- TupleTableSlot *srcslot;
- ExprContext *econtext;
- TableScanDesc scan;
- Snapshot snapshot;
- MemoryContext oldCxt;
List *partContexts = NIL;
- TupleConversionMap *tuple_map;
- SplitPartitionContext *defaultPartCtx = NULL,
- *pc;
- bool isOldDefaultPart = false;
+ SplitInfo *si;
+ ListCell *listptr;
- mycid = GetCurrentCommandId(true);
+ si = (SplitInfo *) palloc0(sizeof(SplitInfo));
- estate = CreateExecutorState();
+ si->cmd = cmd;
+ si->rel = rel;
+ si->splitRel = splitRel;
- forboth(listptr, partlist, listptr2, newPartRels)
+ si->defaultPartOid = defaultPartOid;
+ si->estate = CreateExecutorState();
+
+ /* Create context for each new partition and fill it. */
+ foreach(listptr, cmd->partlist)
{
SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
-
- pc = createSplitPartitionContext((Relation) lfirst(listptr2));
+ SplitPartitionContext *pc = createSplitPartitionContext(sps);
if (sps->bound->is_default)
{
/* We should not create constraint for detached DEFAULT partition. */
- defaultPartCtx = pc;
+ si->defaultPartCtx = pc;
}
else
{
@@ -20968,9 +20994,8 @@ moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPar
/* Build expression execution states for partition check quals. */
partConstraint = get_qual_from_partbound(rel, sps->bound);
- partConstraint =
- (List *) eval_const_expressions(NULL,
- (Node *) partConstraint);
+ partConstraint = (List *) eval_const_expressions(NULL, (Node *) partConstraint);
+
/* Make boolean expression for ExecCheck(). */
partConstraint = list_make1(make_ands_explicit(partConstraint));
@@ -20978,11 +21003,10 @@ moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPar
* Map the vars in the constraint expression from rel's attnos to
* splitRel's.
*/
- partConstraint = map_partition_varattnos(partConstraint,
- 1, splitRel, rel);
+ partConstraint = map_partition_varattnos(partConstraint, 1, splitRel, rel);
pc->partqualstate =
- ExecPrepareExpr((Expr *) linitial(partConstraint), estate);
+ ExecPrepareExpr((Expr *) linitial(partConstraint), si->estate);
Assert(pc->partqualstate != NULL);
}
@@ -20990,41 +21014,261 @@ moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPar
partContexts = lappend(partContexts, pc);
}
+ si->partContexts = partContexts;
+
+ return si;
+}
+
+/*
+ * deleteSplitInfo: delete SPLIT PARTITION command context
+ */
+static void
+deleteSplitInfo(SplitInfo * si)
+{
+ ListCell *listptr;
+
+ FreeExecutorState(si->estate);
+
+ foreach(listptr, si->partContexts)
+ deleteSplitPartitionContext((SplitPartitionContext *) lfirst(listptr));
+
+ pfree(si);
+}
+
+/*
+ * checkNewPartitions: simple check of the new partitions.
+ *
+ * cmd: SPLIT PARTITION command info.
+ * splitRelOid: split partition Oid.
+ *
+ * Returns true if one of the new partitions has the same name as the split
+ * partition.
+ */
+static bool
+checkNewPartitions(PartitionCmd *cmd, Oid splitRelOid)
+{
+ Oid namespaceId;
+ ListCell *listptr;
+ bool isSameName = false;
+ char relname[NAMEDATALEN];
+
+ foreach(listptr, cmd->partlist)
+ {
+ Oid existing_relid;
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ strlcpy(relname, sps->name->relname, NAMEDATALEN);
+
+ /*
+ * Look up the namespace in which we are supposed to create the
+ * partition, check we have permission to create there, lock it
+ * against concurrent drop, and mark stmt->relation as
+ * RELPERSISTENCE_TEMP if a temporary namespace is selected.
+ */
+ namespaceId =
+ RangeVarGetAndCheckCreationNamespace(sps->name, NoLock, NULL);
+
+ /*
+ * This would fail later on anyway, if the relation already exists.
+ * But by catching it here we can emit a nicer error message.
+ */
+ existing_relid = get_relname_relid(relname, namespaceId);
+ if (existing_relid == splitRelOid && !isSameName)
+ /* One new partition can have the same name as split partition. */
+ isSameName = true;
+ else if (existing_relid != InvalidOid)
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("relation \"%s\" already exists", relname)));
+ }
+
+ return isSameName;
+}
+
+/*
+ * createPartitionTable: create table for new partition with given name
+ * (newPartName) like table (modelRelName)
+ *
+ * Emulates command: CREATE TABLE <newPartName> (LIKE <modelRelName>
+ * INCLUDING ALL EXCLUDING INDEXES EXCLUDING IDENTITY)
+ */
+static void
+createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
+ AlterTableUtilityContext *context)
+{
+ CreateStmt *createStmt;
+ TableLikeClause *tlc;
+ PlannedStmt *wrapper;
+
+ createStmt = makeNode(CreateStmt);
+ createStmt->relation = newPartName;
+ createStmt->tableElts = NIL;
+ createStmt->inhRelations = NIL;
+ createStmt->constraints = NIL;
+ createStmt->options = NIL;
+ createStmt->oncommit = ONCOMMIT_NOOP;
+ createStmt->tablespacename = NULL;
+ createStmt->if_not_exists = false;
+
+ tlc = makeNode(TableLikeClause);
+ tlc->relation = modelRelName;
+
+ /*
+ * Indexes will be inherited on "attach new partitions" stage, after data
+ * moving.
+ */
+ tlc->options = CREATE_TABLE_LIKE_ALL & ~(CREATE_TABLE_LIKE_INDEXES | CREATE_TABLE_LIKE_IDENTITY);
+ tlc->relationOid = InvalidOid;
+ createStmt->tableElts = lappend(createStmt->tableElts, tlc);
+
+ /* Need to make a wrapper PlannedStmt. */
+ wrapper = makeNode(PlannedStmt);
+ wrapper->commandType = CMD_UTILITY;
+ wrapper->canSetTag = false;
+ wrapper->utilityStmt = (Node *) createStmt;
+ wrapper->stmt_location = context->pstmt->stmt_location;
+ wrapper->stmt_len = context->pstmt->stmt_len;
+
+ ProcessUtility(wrapper,
+ context->queryString,
+ false,
+ PROCESS_UTILITY_SUBCOMMAND,
+ NULL,
+ NULL,
+ None_Receiver,
+ NULL);
+}
+
+/*
+ * createNewPartitions: simple check of the new partitions.
+ *
+ * si: SPLIT PARTITION command context.
+ * splitName: split partition name.
+ * pcWithAllRows: context of partition that contains all the rows of the split
+ * partition or NULL if no such partition exists.
+ *
+ * Function returns name of split partition (and can change it in case of
+ * optimization with split partition renaming).
+ */
+static RangeVar *
+createNewPartitions(SplitInfo * si, RangeVar *splitName,
+ SplitPartitionContext * pcWithAllRows,
+ AlterTableUtilityContext *context)
+{
+ ListCell *listptr;
+ Oid splitRelOid;
+ RangeVar *splitPartName = splitName;
+
+ splitRelOid = RelationGetRelid(si->splitRel);
+
+ foreach(listptr, si->partContexts)
+ {
+ SplitPartitionContext *pc = (SplitPartitionContext *) lfirst(listptr);
+
+ if (pc == pcWithAllRows)
+ {
+ /* Need to reuse splitRel for partition instead of creation. */
+
+ /*
+ * We must bump the command counter to make the split partition
+ * tuple visible for rename.
+ */
+ CommandCounterIncrement();
+
+ /*
+ * Rename split partition to new partition.
+ */
+ RenameRelationInternal(splitRelOid, pc->sps->name->relname, false, false);
+ splitPartName = makeRangeVar(get_namespace_name(RelationGetNamespace(si->splitRel)),
+ pc->sps->name->relname, -1);
+
+ /*
+ * We must bump the command counter to make the split partition
+ * tuple visible after rename.
+ */
+ CommandCounterIncrement();
+
+ pc->partRel = si->splitRel;
+ /* No need to open relation : splitRel is already opened. */
+ }
+ else
+ {
+ createPartitionTable(pc->sps->name, splitPartName, context);
+
+ /* Open the new partition and acquire exclusive lock on it. */
+ pc->partRel = table_openrv(pc->sps->name, AccessExclusiveLock);
+ }
+ }
+
+ return splitPartName;
+}
+
+/*
+ * moveSplitTableRows: scan split partition (splitRel) of partitioned table
+ * (rel) and move rows into new partitions.
+ *
+ * si: SPLIT PARTITION command context.
+ */
+static void
+moveSplitTableRows(SplitInfo * si)
+{
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ CommandId mycid;
+ ListCell *listptr;
+ TupleTableSlot *srcslot;
+ ExprContext *econtext;
+ TableScanDesc scan;
+ Snapshot snapshot;
+ MemoryContext oldCxt;
+ TupleConversionMap *tuple_map;
+ SplitPartitionContext *pc = NULL;
+ bool isOldDefaultPart = false;
+ SplitPartitionContext *defaultPartCtx = si->defaultPartCtx;
+
+ mycid = GetCurrentCommandId(true);
+
+ /* Prepare new partitions contexts for insert rows. */
+ foreach(listptr, si->partContexts)
+ fillSplitPartitionContext((SplitPartitionContext *) lfirst(listptr));
+
/*
* Create partition context for DEFAULT partition. We can insert values
* into this partition in case spaces with values between new partitions.
*/
- if (!defaultPartCtx && OidIsValid(defaultPartOid))
+ if (!defaultPartCtx && OidIsValid(si->defaultPartOid))
{
/* Indicate that we allocate context for old DEFAULT partition */
isOldDefaultPart = true;
- defaultPartCtx = createSplitPartitionContext(table_open(defaultPartOid, AccessExclusiveLock));
+ defaultPartCtx = createSplitPartitionContext(NULL);
+ defaultPartCtx->partRel = table_open(si->defaultPartOid, AccessExclusiveLock);
+ fillSplitPartitionContext(defaultPartCtx);
}
- econtext = GetPerTupleExprContext(estate);
+ econtext = GetPerTupleExprContext(si->estate);
/* Create necessary tuple slot. */
- srcslot = MakeSingleTupleTableSlot(RelationGetDescr(splitRel),
- table_slot_callbacks(splitRel));
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(si->splitRel),
+ table_slot_callbacks(si->splitRel));
/*
* Map computing for moving attributes of split partition to new partition
* (for first new partition but other new partitions can use the same
* map).
*/
- pc = (SplitPartitionContext *) lfirst(list_head(partContexts));
- tuple_map = convert_tuples_by_name(RelationGetDescr(splitRel),
+ pc = (SplitPartitionContext *) lfirst(list_head(si->partContexts));
+ tuple_map = convert_tuples_by_name(RelationGetDescr(si->splitRel),
RelationGetDescr(pc->partRel));
/* Scan through the rows. */
snapshot = RegisterSnapshot(GetLatestSnapshot());
- scan = table_beginscan(splitRel, snapshot, 0, NULL);
+ scan = table_beginscan(si->splitRel, snapshot, 0, NULL);
/*
* Switch to per-tuple memory context and reset it for each tuple
* produced, so we don't leak memory.
*/
- oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(estate));
+ oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(si->estate));
while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
{
@@ -21037,7 +21281,7 @@ moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPar
econtext->ecxt_scantuple = srcslot;
/* Search partition for current slot srcslot. */
- foreach(listptr, partContexts)
+ foreach(listptr, si->partContexts)
{
pc = (SplitPartitionContext *) lfirst(listptr);
@@ -21058,7 +21302,7 @@ moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPar
ereport(ERROR,
(errcode(ERRCODE_CHECK_VIOLATION),
errmsg("can not find partition for split partition row"),
- errtable(splitRel)));
+ errtable(si->splitRel)));
}
if (tuple_map)
@@ -21099,74 +21343,208 @@ moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPar
ExecDropSingleTupleTableSlot(srcslot);
- FreeExecutorState(estate);
-
- foreach(listptr, partContexts)
- deleteSplitPartitionContext((SplitPartitionContext *) lfirst(listptr), ti_options);
-
/* Need to close table and free buffers for DEFAULT partition. */
if (isOldDefaultPart)
{
Relation defaultPartRel = defaultPartCtx->partRel;
- deleteSplitPartitionContext(defaultPartCtx, ti_options);
+ deleteSplitPartitionContext(defaultPartCtx);
/* Keep the lock until commit. */
table_close(defaultPartRel, NoLock);
}
}
/*
- * createPartitionTable: create table for new partition with given name
- * (newPartName) like table (modelRelName)
+ * findNewPartForSlot: find partition that contains slot value.
*
- * Emulates command: CREATE TABLE <newPartName> (LIKE <modelRelName>
- * INCLUDING ALL EXCLUDING INDEXES EXCLUDING IDENTITY)
+ * si: SPLIT PARTITION context.
+ * checkPc: partition context for check slot value (can be NULL).
+ * slot: value to check.
*/
-static void
-createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
- AlterTableUtilityContext *context)
+static SplitPartitionContext *
+findNewPartForSlot(SplitInfo * si, SplitPartitionContext * checkPc, TupleTableSlot *slot)
{
- CreateStmt *createStmt;
- TableLikeClause *tlc;
- PlannedStmt *wrapper;
+ ListCell *listptr;
+ ExprContext *econtext;
+ MemoryContext oldCxt;
+ SplitPartitionContext *result = NULL;
- createStmt = makeNode(CreateStmt);
- createStmt->relation = newPartName;
- createStmt->tableElts = NIL;
- createStmt->inhRelations = NIL;
- createStmt->constraints = NIL;
- createStmt->options = NIL;
- createStmt->oncommit = ONCOMMIT_NOOP;
- createStmt->tablespacename = NULL;
- createStmt->if_not_exists = false;
+ econtext = GetPerTupleExprContext(si->estate);
- tlc = makeNode(TableLikeClause);
- tlc->relation = modelRelName;
+ /* Make sure the tuple is fully deconstructed. */
+ slot_getallattrs(slot);
+
+ econtext->ecxt_scantuple = slot;
/*
- * Indexes will be inherited on "attach new partitions" stage, after data
- * moving.
+ * Switch to per-tuple memory context and reset it after each check, so we
+ * don't leak memory.
*/
- tlc->options = CREATE_TABLE_LIKE_ALL & ~(CREATE_TABLE_LIKE_INDEXES | CREATE_TABLE_LIKE_IDENTITY);
- tlc->relationOid = InvalidOid;
- createStmt->tableElts = lappend(createStmt->tableElts, tlc);
+ oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(si->estate));
- /* Need to make a wrapper PlannedStmt. */
- wrapper = makeNode(PlannedStmt);
- wrapper->commandType = CMD_UTILITY;
- wrapper->canSetTag = false;
- wrapper->utilityStmt = (Node *) createStmt;
- wrapper->stmt_location = context->pstmt->stmt_location;
- wrapper->stmt_len = context->pstmt->stmt_len;
+ if (checkPc)
+ {
+ if (ExecCheck(checkPc->partqualstate, econtext))
+ {
+ ResetExprContext(econtext);
+ result = checkPc;
+ }
+ }
+ else
+ {
+ /* Search partition for current slot srcslot. */
+ foreach(listptr, si->partContexts)
+ {
+ SplitPartitionContext *pc = (SplitPartitionContext *) lfirst(listptr);
- ProcessUtility(wrapper,
- context->queryString,
- false,
- PROCESS_UTILITY_SUBCOMMAND,
- NULL,
- NULL,
- None_Receiver,
- NULL);
+ if (pc->partqualstate /* skip DEFAULT partition */ &&
+ ExecCheck(pc->partqualstate, econtext))
+ {
+ ResetExprContext(econtext);
+ result = pc;
+ break;
+ }
+ ResetExprContext(econtext);
+ }
+
+ /* We not found partition with borders but exists DEFAULT partition. */
+ if (!result && si->defaultPartCtx)
+ result = si->defaultPartCtx;
+
+ /*
+ * "result" can be NULL here because can be spaces between of the new
+ * partitions and rows from the spaces can be moved to the DEFAULT
+ * partition of the partitioned table.
+ */
+ }
+
+ MemoryContextSwitchTo(oldCxt);
+
+ return result;
+}
+
+/*
+ * findNewPartWithAllRows: find partition that contains all the rows of the
+ * split partition; returns partition context if partition was found.
+ *
+ * si: SPLIT PARTITION context.
+ */
+static SplitPartitionContext *
+findNewPartWithAllRows(SplitInfo * si)
+{
+ PartitionKey key = RelationGetPartitionKey(si->rel);
+ ListCell *index;
+ int partnatts;
+ SplitPartitionContext *result = NULL;
+ AttrMap *map;
+ AttrNumber *partattrs;
+ int i;
+
+ /* We can use optimization for BY RANGE partitioning only. */
+ if (key->strategy != PARTITION_STRATEGY_RANGE)
+ return NULL;
+
+ partnatts = get_partition_natts(key);
+
+ /*
+ * Partition key contains columns of partitioned tables si->rel but index
+ * contains columns of si->splitRel. So we need a map for convert
+ * attributes numbers (si->rel) -> (si->splitRel).
+ */
+ map = build_attrmap_by_name_if_req(RelationGetDescr(si->splitRel),
+ RelationGetDescr(si->rel),
+ false);
+ if (map)
+ {
+ /*
+ * Columns order in a partitioned table and split partition is
+ * different. So need to create a new array with attribute numbers.
+ */
+ partattrs = palloc(sizeof(AttrNumber) * partnatts);
+ for (i = 0; i < partnatts; i++)
+ {
+ AttrNumber attr_num = get_partition_col_attnum(key, i);
+
+ partattrs[i] = map->attnums[attr_num - 1];
+ }
+ }
+ else
+ {
+ /* We can use array of partition key. */
+ partattrs = key->partattrs;
+ }
+
+ /* Scan all indexes of split partition. */
+ foreach(index, RelationGetIndexList(si->splitRel))
+ {
+ Oid thisIndexOid = lfirst_oid(index);
+ Relation indexRel = index_open(thisIndexOid, AccessShareLock);
+
+ /*
+ * Index should be valid, btree (for searching min/max) and contain
+ * the same columns as partition key.
+ */
+ if (indexRel->rd_index->indisvalid &&
+ indexRel->rd_rel->relam == BTREE_AM_OID &&
+ indexRel->rd_index->indnatts == partnatts)
+ {
+ for (i = 0; i < indexRel->rd_index->indnatts; i++)
+ {
+ if (indexRel->rd_index->indkey.values[i] != partattrs[i])
+ break;
+ }
+
+ /* Index found? */
+ if (i == indexRel->rd_index->indnatts)
+ {
+ IndexScanDesc indexScan;
+ TupleTableSlot *slot;
+
+ indexScan = index_beginscan(si->splitRel, indexRel, SnapshotAny, 0, 0);
+ do
+ {
+ SplitPartitionContext *pc;
+
+ /* Search a minimum index value. */
+ index_rescan(indexScan, NULL, 0, NULL, 0);
+ slot = table_slot_create(si->splitRel, NULL);
+ if (!index_getnext_slot(indexScan, ForwardScanDirection, slot))
+ {
+ ExecDropSingleTupleTableSlot(slot);
+ break;
+ }
+ /* Find partition context for minimum index value. */
+ pc = findNewPartForSlot(si, NULL, slot);
+ ExecDropSingleTupleTableSlot(slot);
+
+ /* Search a maximum index value. */
+ index_rescan(indexScan, NULL, 0, NULL, 0);
+ slot = table_slot_create(si->splitRel, NULL);
+ if (!index_getnext_slot(indexScan, BackwardScanDirection, slot))
+ {
+ ExecDropSingleTupleTableSlot(slot);
+ break;
+ }
+ /* Check partition context "pc" for maximum index value. */
+ result = findNewPartForSlot(si, pc, slot);
+ ExecDropSingleTupleTableSlot(slot);
+ } while (0);
+
+ index_endscan(indexScan);
+ index_close(indexRel, AccessShareLock);
+ goto done;
+ }
+ }
+ index_close(indexRel, AccessShareLock);
+ }
+
+done:
+ if (map)
+ {
+ pfree(partattrs);
+ free_attrmap(map);
+ }
+ return result;
}
/*
@@ -21178,16 +21556,14 @@ ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
{
Relation splitRel;
Oid splitRelOid;
- char relname[NAMEDATALEN];
- Oid namespaceId;
- ListCell *listptr,
- *listptr2;
+ ListCell *listptr;
bool isSameName = false;
char tmpRelName[NAMEDATALEN];
- List *newPartRels = NIL;
ObjectAddress object;
RangeVar *splitPartName = cmd->name;
Oid defaultPartOid;
+ SplitPartitionContext *pcWithAllRows;
+ SplitInfo *si;
defaultPartOid = get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
@@ -21206,35 +21582,7 @@ ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
splitRelOid = RelationGetRelid(splitRel);
/* Check descriptions of new partitions. */
- foreach(listptr, cmd->partlist)
- {
- Oid existing_relid;
- SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
-
- strlcpy(relname, sps->name->relname, NAMEDATALEN);
-
- /*
- * Look up the namespace in which we are supposed to create the
- * partition, check we have permission to create there, lock it
- * against concurrent drop, and mark stmt->relation as
- * RELPERSISTENCE_TEMP if a temporary namespace is selected.
- */
- namespaceId =
- RangeVarGetAndCheckCreationNamespace(sps->name, NoLock, NULL);
-
- /*
- * This would fail later on anyway, if the relation already exists.
- * But by catching it here we can emit a nicer error message.
- */
- existing_relid = get_relname_relid(relname, namespaceId);
- if (existing_relid == splitRelOid && !isSameName)
- /* One new partition can have the same name as split partition. */
- isSameName = true;
- else if (existing_relid != InvalidOid)
- ereport(ERROR,
- (errcode(ERRCODE_DUPLICATE_TABLE),
- errmsg("relation \"%s\" already exists", relname)));
- }
+ isSameName = checkNewPartitions(cmd, splitRelOid);
/* Detach split partition. */
RemoveInheritance(splitRel, rel, false);
@@ -21265,43 +21613,48 @@ ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
CommandCounterIncrement();
}
- /* Create new partitions (like split partition), without indexes. */
- foreach(listptr, cmd->partlist)
- {
- SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
- Relation newPartRel;
+ /* Create SPLIT PARTITION context. */
+ si = createSplitInfo(cmd, rel, splitRel, defaultPartOid);
- createPartitionTable(sps->name, splitPartName, context);
+ /*
+ * Optimization: if exist a new partition that contains all the rows of
+ * the split partition then do not copy rows, rename the split partition.
+ */
+ pcWithAllRows = findNewPartWithAllRows(si);
- /* Open the new partition and acquire exclusive lock on it. */
- newPartRel = table_openrv(sps->name, AccessExclusiveLock);
+ /* Create new partitions (like split partition), without indexes. */
+ splitPartName = createNewPartitions(si, splitPartName, pcWithAllRows, context);
- newPartRels = lappend(newPartRels, newPartRel);
+ if (!pcWithAllRows)
+ {
+ /* Copy data from split partition to new partitions. */
+ moveSplitTableRows(si);
+ /* Keep the lock until commit. */
+ table_close(splitRel, NoLock);
}
- /* Copy data from split partition to new partitions. */
- moveSplitTableRows(rel, splitRel, cmd->partlist, newPartRels, defaultPartOid);
- /* Keep the lock until commit. */
- table_close(splitRel, NoLock);
-
/* Attach new partitions to partitioned table. */
- forboth(listptr, cmd->partlist, listptr2, newPartRels)
+ foreach(listptr, si->partContexts)
{
- SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
- Relation newPartRel = (Relation) lfirst(listptr2);
+ SplitPartitionContext *pc = (SplitPartitionContext *) lfirst(listptr);
/* wqueue = NULL: verification for each cloned constraint is not need. */
- attachPartitionTable(NULL, rel, newPartRel, sps->bound);
+ attachPartitionTable(NULL, rel, pc->partRel, pc->sps->bound);
/* Keep the lock until commit. */
- table_close(newPartRel, NoLock);
+ table_close(pc->partRel, NoLock);
}
- /* Drop split partition. */
- object.classId = RelationRelationId;
- object.objectId = splitRelOid;
- object.objectSubId = 0;
- /* Probably DROP_CASCADE is not needed. */
- performDeletion(&object, DROP_RESTRICT, 0);
+ if (!pcWithAllRows)
+ {
+ /* Drop split partition. */
+ object.classId = RelationRelationId;
+ object.objectId = splitRelOid;
+ object.objectSubId = 0;
+ /* Probably DROP_CASCADE is not needed. */
+ performDeletion(&object, DROP_RESTRICT, 0);
+ }
+
+ deleteSplitInfo(si);
}
/*
diff --git a/src/test/regress/expected/partition_split.out b/src/test/regress/expected/partition_split.out
index 7eb52f6feef..a8f3d8d6d17 100644
--- a/src/test/regress/expected/partition_split.out
+++ b/src/test/regress/expected/partition_split.out
@@ -1414,4 +1414,311 @@ SELECT * FROM sales_others;
DROP TABLE sales_range;
--
+--
+-- Tests for SPLIT optimization (BY RANGE partitioning): if one of the new
+-- partitions contains all the rows of the split partition, then we can rename
+-- the split partition instead of creating a new partition and moving the rows.
+--
+-- 1. Optimization should be used.
+--
+CREATE TABLE test(name text, i int) PARTITION BY RANGE (i);
+CREATE TABLE test_1 PARTITION OF test FOR VALUES FROM (1) TO (10);
+CREATE TABLE test_def PARTITION OF test DEFAULT;
+CREATE INDEX idx_test_i ON test(i);
+INSERT INTO test(name, i) VALUES
+ ('a1', 1), ('a5', 5), ('a15', 15), ('a12', 12), ('a17', 17), ('a11', 11);
+-- should be rows 15, 12, 17, 11:
+SELECT i FROM test_def;
+ i
+----
+ 15
+ 12
+ 17
+ 11
+(4 rows)
+
+SELECT 'test_def'::regclass::oid AS prev_oid \gset
+ALTER TABLE test SPLIT PARTITION test_def INTO
+ (PARTITION test_def DEFAULT, PARTITION test_2 FOR VALUES FROM (11) TO (19));
+-- should be 't' (table "test_2" after SPLIT should be the same as table
+-- "test_def" before SPLIT):
+SELECT 'test_2'::regclass::oid=:prev_oid;
+ ?column?
+----------
+ t
+(1 row)
+
+-- should be rows 15, 12, 17, 11:
+SELECT i FROM test_2;
+ i
+----
+ 15
+ 12
+ 17
+ 11
+(4 rows)
+
+-- should be 0 rows:
+SELECT i FROM test_def;
+ i
+---
+(0 rows)
+
+-- should be 6 rows:
+SELECT * FROM test;
+ name | i
+------+----
+ a1 | 1
+ a5 | 5
+ a15 | 15
+ a12 | 12
+ a17 | 17
+ a11 | 11
+(6 rows)
+
+DROP TABLE test CASCADE;
+--
+-- 2. Optimization cannot be used because not exists btree-index on the
+-- partition key (it is used to check the placement of rows in the partitions).
+--
+CREATE TABLE test(name text, i int) PARTITION BY RANGE (i);
+CREATE TABLE test_1 PARTITION OF test FOR VALUES FROM (1) TO (10);
+CREATE TABLE test_def PARTITION OF test DEFAULT;
+INSERT INTO test(name, i) VALUES
+ ('a1', 1), ('a5', 5), ('a15', 15), ('a12', 12), ('a17', 17), ('a11', 11);
+SELECT 'test_def'::regclass::oid AS prev_oid \gset
+ALTER TABLE test SPLIT PARTITION test_def INTO
+ (PARTITION test_def DEFAULT, PARTITION test_2 FOR VALUES FROM (11) TO (19));
+-- should be 'f' (tables "test_2" and "test_def" should be different):
+SELECT 'test_2'::regclass::oid=:prev_oid;
+ ?column?
+----------
+ f
+(1 row)
+
+-- should be rows 15, 12, 17, 11:
+SELECT i FROM test_2;
+ i
+----
+ 15
+ 12
+ 17
+ 11
+(4 rows)
+
+-- should be 6 rows:
+SELECT * FROM test;
+ name | i
+------+----
+ a1 | 1
+ a5 | 5
+ a15 | 15
+ a12 | 12
+ a17 | 17
+ a11 | 11
+(6 rows)
+
+DROP TABLE test CASCADE;
+--
+-- 3. Optimization cannot be used because rows should be moved into different
+-- partitions.
+--
+CREATE TABLE test(name text, i int) PARTITION BY RANGE (i);
+CREATE TABLE test_1 PARTITION OF test FOR VALUES FROM (1) TO (10);
+CREATE TABLE test_def PARTITION OF test DEFAULT;
+CREATE INDEX idx_test_i ON test(i);
+INSERT INTO test(name, i) VALUES
+ ('a1', 1), ('a5', 5), ('a15', 15), ('a12', 12), ('a27', 27), ('a11', 11);
+SELECT 'test_def'::regclass::oid AS prev_oid \gset
+ALTER TABLE test SPLIT PARTITION test_def INTO
+ (PARTITION test_def DEFAULT, PARTITION test_2 FOR VALUES FROM (11) TO (19));
+-- should be 'f' (tables "test_2" and "test_def" should be different):
+SELECT 'test_2'::regclass::oid=:prev_oid;
+ ?column?
+----------
+ f
+(1 row)
+
+-- should be rows 15, 12, 11:
+SELECT i FROM test_2;
+ i
+----
+ 15
+ 12
+ 11
+(3 rows)
+
+-- should be 6 rows:
+SELECT * FROM test;
+ name | i
+------+----
+ a1 | 1
+ a5 | 5
+ a15 | 15
+ a12 | 12
+ a11 | 11
+ a27 | 27
+(6 rows)
+
+DROP TABLE test CASCADE;
+--
+-- 4. Optimization should be used, DEFAUT partition renames to DEFAULT
+-- partition.
+--
+CREATE TABLE test(name text, i int) PARTITION BY RANGE (i);
+CREATE TABLE test_1 PARTITION OF test FOR VALUES FROM (1) TO (10);
+CREATE TABLE test_def PARTITION OF test DEFAULT;
+CREATE INDEX idx_test_i ON test(i);
+INSERT INTO test(name, i) VALUES
+ ('a1', 1), ('a5', 5), ('a25', 25), ('a22', 22), ('a27', 27), ('a21', 21);
+-- should be rows 25, 22, 27, 21:
+SELECT i FROM test_def;
+ i
+----
+ 25
+ 22
+ 27
+ 21
+(4 rows)
+
+SELECT 'test_def'::regclass::oid AS prev_oid \gset
+ALTER TABLE test SPLIT PARTITION test_def INTO
+ (PARTITION test_def DEFAULT, PARTITION test_2 FOR VALUES FROM (11) TO (19));
+-- should be 't' (table "test_def" after SPLIT should be the same as table
+-- "test_def" before SPLIT):
+SELECT 'test_def'::regclass::oid=:prev_oid;
+ ?column?
+----------
+ t
+(1 row)
+
+-- should be 0 rows:
+SELECT i FROM test_2;
+ i
+---
+(0 rows)
+
+-- should be rows 25, 22, 27, 21:
+SELECT i FROM test_def;
+ i
+----
+ 25
+ 22
+ 27
+ 21
+(4 rows)
+
+-- should be 6 rows:
+SELECT * FROM test;
+ name | i
+------+----
+ a1 | 1
+ a5 | 5
+ a25 | 25
+ a22 | 22
+ a27 | 27
+ a21 | 21
+(6 rows)
+
+DROP TABLE test CASCADE;
+--
+-- 5. Optimization should be used, 2-column partition key + different columns
+-- order in partitions.
+--
+CREATE TABLE test_2colkey(s smallint, b bigint, t text) PARTITION BY RANGE (b, s);
+CREATE TABLE test_2colkey_1 PARTITION OF test_2colkey FOR VALUES FROM (1000000001, 1) TO (1000000100, 100);
+CREATE TABLE test_2colkey_def(i int, b bigint, s smallint, t text);
+ALTER TABLE test_2colkey_def DROP COLUMN i;
+ALTER TABLE test_2colkey ATTACH PARTITION test_2colkey_def DEFAULT;
+CREATE INDEX idx_test_2colkey_s_b ON test_2colkey(b, s);
+INSERT INTO test_2colkey (b, s, t) VALUES (1000000010, 3, 'value_10_3');
+INSERT INTO test_2colkey (b, s, t) VALUES (1000000120, 4, 'value_120_4');
+INSERT INTO test_2colkey (b, s, t) VALUES (1000000003, 5, 'value_3_5');
+INSERT INTO test_2colkey (b, s, t) VALUES (1000000124, 2, 'value_124_2');
+-- should be 4 rows:
+SELECT b, s FROM test_2colkey;
+ b | s
+------------+---
+ 1000000010 | 3
+ 1000000003 | 5
+ 1000000120 | 4
+ 1000000124 | 2
+(4 rows)
+
+-- should be 2 rows:
+SELECT b, s FROM test_2colkey_def;
+ b | s
+------------+---
+ 1000000120 | 4
+ 1000000124 | 2
+(2 rows)
+
+SELECT 'test_2colkey_def'::regclass::oid AS prev_oid \gset
+ALTER TABLE test_2colkey SPLIT PARTITION test_2colkey_def INTO
+ (PARTITION test_2colkey_2 FOR VALUES FROM (1000000101, 1) TO (1000000200, 100),
+ PARTITION test_2colkey_def DEFAULT);
+-- should be 't' (table "test_2colkey_2" after SPLIT should be the same as table
+-- "test_2colkey_def" before SPLIT):
+SELECT 'test_2colkey_2'::regclass::oid=:prev_oid;
+ ?column?
+----------
+ t
+(1 row)
+
+-- should be 2 rows:
+SELECT b, s FROM test_2colkey_2;
+ b | s
+------------+---
+ 1000000120 | 4
+ 1000000124 | 2
+(2 rows)
+
+-- should be 0 rows:
+SELECT b, s FROM test_2colkey_def;
+ b | s
+---+---
+(0 rows)
+
+-- should be 6 rows:
+SELECT b, s FROM test_2colkey;
+ b | s
+------------+---
+ 1000000010 | 3
+ 1000000003 | 5
+ 1000000120 | 4
+ 1000000124 | 2
+(4 rows)
+
+--
+-- 5.1. Optimization cannot be used.
+--
+INSERT INTO test_2colkey (b, s, t) VALUES (1000000200, 1, 'value_200_1');
+SELECT 'test_2colkey_2'::regclass::oid AS prev_oid \gset
+ALTER TABLE test_2colkey SPLIT PARTITION test_2colkey_2 INTO
+ (PARTITION test_2colkey_2 FOR VALUES FROM (1000000101, 1) TO (1000000150, 100),
+ PARTITION test_2colkey_3 FOR VALUES FROM (1000000151, 1) TO (1000000200, 100));
+-- should be 'f' (optimization is not used):
+SELECT 'test_2colkey_2'::regclass::oid=:prev_oid;
+ ?column?
+----------
+ f
+(1 row)
+
+-- should be 2 rows:
+SELECT b, s FROM test_2colkey_2;
+ b | s
+------------+---
+ 1000000120 | 4
+ 1000000124 | 2
+(2 rows)
+
+-- should be 1 row:
+SELECT b, s FROM test_2colkey_3;
+ b | s
+------------+---
+ 1000000200 | 1
+(1 row)
+
+DROP TABLE test_2colkey CASCADE;
+--
DROP SCHEMA partition_split_schema;
diff --git a/src/test/regress/sql/partition_split.sql b/src/test/regress/sql/partition_split.sql
index 40c71889b6e..17341353e09 100644
--- a/src/test/regress/sql/partition_split.sql
+++ b/src/test/regress/sql/partition_split.sql
@@ -829,5 +829,157 @@ SELECT * FROM sales_others;
DROP TABLE sales_range;
+--
+--
+-- Tests for SPLIT optimization (BY RANGE partitioning): if one of the new
+-- partitions contains all the rows of the split partition, then we can rename
+-- the split partition instead of creating a new partition and moving the rows.
+--
+-- 1. Optimization should be used.
+--
+CREATE TABLE test(name text, i int) PARTITION BY RANGE (i);
+CREATE TABLE test_1 PARTITION OF test FOR VALUES FROM (1) TO (10);
+CREATE TABLE test_def PARTITION OF test DEFAULT;
+CREATE INDEX idx_test_i ON test(i);
+INSERT INTO test(name, i) VALUES
+ ('a1', 1), ('a5', 5), ('a15', 15), ('a12', 12), ('a17', 17), ('a11', 11);
+-- should be rows 15, 12, 17, 11:
+SELECT i FROM test_def;
+SELECT 'test_def'::regclass::oid AS prev_oid \gset
+ALTER TABLE test SPLIT PARTITION test_def INTO
+ (PARTITION test_def DEFAULT, PARTITION test_2 FOR VALUES FROM (11) TO (19));
+-- should be 't' (table "test_2" after SPLIT should be the same as table
+-- "test_def" before SPLIT):
+SELECT 'test_2'::regclass::oid=:prev_oid;
+-- should be rows 15, 12, 17, 11:
+SELECT i FROM test_2;
+-- should be 0 rows:
+SELECT i FROM test_def;
+-- should be 6 rows:
+SELECT * FROM test;
+DROP TABLE test CASCADE;
+--
+-- 2. Optimization cannot be used because not exists btree-index on the
+-- partition key (it is used to check the placement of rows in the partitions).
+--
+CREATE TABLE test(name text, i int) PARTITION BY RANGE (i);
+CREATE TABLE test_1 PARTITION OF test FOR VALUES FROM (1) TO (10);
+CREATE TABLE test_def PARTITION OF test DEFAULT;
+INSERT INTO test(name, i) VALUES
+ ('a1', 1), ('a5', 5), ('a15', 15), ('a12', 12), ('a17', 17), ('a11', 11);
+SELECT 'test_def'::regclass::oid AS prev_oid \gset
+ALTER TABLE test SPLIT PARTITION test_def INTO
+ (PARTITION test_def DEFAULT, PARTITION test_2 FOR VALUES FROM (11) TO (19));
+-- should be 'f' (tables "test_2" and "test_def" should be different):
+SELECT 'test_2'::regclass::oid=:prev_oid;
+-- should be rows 15, 12, 17, 11:
+SELECT i FROM test_2;
+-- should be 6 rows:
+SELECT * FROM test;
+DROP TABLE test CASCADE;
+--
+-- 3. Optimization cannot be used because rows should be moved into different
+-- partitions.
+--
+CREATE TABLE test(name text, i int) PARTITION BY RANGE (i);
+CREATE TABLE test_1 PARTITION OF test FOR VALUES FROM (1) TO (10);
+CREATE TABLE test_def PARTITION OF test DEFAULT;
+CREATE INDEX idx_test_i ON test(i);
+INSERT INTO test(name, i) VALUES
+ ('a1', 1), ('a5', 5), ('a15', 15), ('a12', 12), ('a27', 27), ('a11', 11);
+SELECT 'test_def'::regclass::oid AS prev_oid \gset
+ALTER TABLE test SPLIT PARTITION test_def INTO
+ (PARTITION test_def DEFAULT, PARTITION test_2 FOR VALUES FROM (11) TO (19));
+-- should be 'f' (tables "test_2" and "test_def" should be different):
+SELECT 'test_2'::regclass::oid=:prev_oid;
+-- should be rows 15, 12, 11:
+SELECT i FROM test_2;
+-- should be 6 rows:
+SELECT * FROM test;
+DROP TABLE test CASCADE;
+--
+-- 4. Optimization should be used, DEFAUT partition renames to DEFAULT
+-- partition.
+--
+CREATE TABLE test(name text, i int) PARTITION BY RANGE (i);
+CREATE TABLE test_1 PARTITION OF test FOR VALUES FROM (1) TO (10);
+CREATE TABLE test_def PARTITION OF test DEFAULT;
+CREATE INDEX idx_test_i ON test(i);
+INSERT INTO test(name, i) VALUES
+ ('a1', 1), ('a5', 5), ('a25', 25), ('a22', 22), ('a27', 27), ('a21', 21);
+-- should be rows 25, 22, 27, 21:
+SELECT i FROM test_def;
+SELECT 'test_def'::regclass::oid AS prev_oid \gset
+ALTER TABLE test SPLIT PARTITION test_def INTO
+ (PARTITION test_def DEFAULT, PARTITION test_2 FOR VALUES FROM (11) TO (19));
+-- should be 't' (table "test_def" after SPLIT should be the same as table
+-- "test_def" before SPLIT):
+SELECT 'test_def'::regclass::oid=:prev_oid;
+-- should be 0 rows:
+SELECT i FROM test_2;
+-- should be rows 25, 22, 27, 21:
+SELECT i FROM test_def;
+-- should be 6 rows:
+SELECT * FROM test;
+DROP TABLE test CASCADE;
+--
+-- 5. Optimization should be used, 2-column partition key + different columns
+-- order in partitions.
+--
+CREATE TABLE test_2colkey(s smallint, b bigint, t text) PARTITION BY RANGE (b, s);
+CREATE TABLE test_2colkey_1 PARTITION OF test_2colkey FOR VALUES FROM (1000000001, 1) TO (1000000100, 100);
+CREATE TABLE test_2colkey_def(i int, b bigint, s smallint, t text);
+ALTER TABLE test_2colkey_def DROP COLUMN i;
+ALTER TABLE test_2colkey ATTACH PARTITION test_2colkey_def DEFAULT;
+CREATE INDEX idx_test_2colkey_s_b ON test_2colkey(b, s);
+
+INSERT INTO test_2colkey (b, s, t) VALUES (1000000010, 3, 'value_10_3');
+INSERT INTO test_2colkey (b, s, t) VALUES (1000000120, 4, 'value_120_4');
+INSERT INTO test_2colkey (b, s, t) VALUES (1000000003, 5, 'value_3_5');
+INSERT INTO test_2colkey (b, s, t) VALUES (1000000124, 2, 'value_124_2');
+
+-- should be 4 rows:
+SELECT b, s FROM test_2colkey;
+-- should be 2 rows:
+SELECT b, s FROM test_2colkey_def;
+
+SELECT 'test_2colkey_def'::regclass::oid AS prev_oid \gset
+
+ALTER TABLE test_2colkey SPLIT PARTITION test_2colkey_def INTO
+ (PARTITION test_2colkey_2 FOR VALUES FROM (1000000101, 1) TO (1000000200, 100),
+ PARTITION test_2colkey_def DEFAULT);
+
+-- should be 't' (table "test_2colkey_2" after SPLIT should be the same as table
+-- "test_2colkey_def" before SPLIT):
+SELECT 'test_2colkey_2'::regclass::oid=:prev_oid;
+
+-- should be 2 rows:
+SELECT b, s FROM test_2colkey_2;
+-- should be 0 rows:
+SELECT b, s FROM test_2colkey_def;
+-- should be 6 rows:
+SELECT b, s FROM test_2colkey;
+
+--
+-- 5.1. Optimization cannot be used.
+--
+INSERT INTO test_2colkey (b, s, t) VALUES (1000000200, 1, 'value_200_1');
+
+SELECT 'test_2colkey_2'::regclass::oid AS prev_oid \gset
+
+ALTER TABLE test_2colkey SPLIT PARTITION test_2colkey_2 INTO
+ (PARTITION test_2colkey_2 FOR VALUES FROM (1000000101, 1) TO (1000000150, 100),
+ PARTITION test_2colkey_3 FOR VALUES FROM (1000000151, 1) TO (1000000200, 100));
+
+-- should be 'f' (optimization is not used):
+SELECT 'test_2colkey_2'::regclass::oid=:prev_oid;
+
+-- should be 2 rows:
+SELECT b, s FROM test_2colkey_2;
+-- should be 1 row:
+SELECT b, s FROM test_2colkey_3;
+
+DROP TABLE test_2colkey CASCADE;
+
--
DROP SCHEMA partition_split_schema;
--
2.39.3 (Apple Git-145)
[application/octet-stream] 0002-ALTER-TABLE-SPLIT-PARTITION-command-v26.patch (176.1K, ../../CAPpHfdsVQwnZPxaQPwcu1g_01F0d-o=ECRcf14X3CmavJB6vSQ@mail.gmail.com/4-0002-ALTER-TABLE-SPLIT-PARTITION-command-v26.patch)
download | inline diff:
From 98c2c8dce4a02bffaa4c0e7d9afdba9e0186b985 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 17:58:52 +0300
Subject: [PATCH 2/4] ALTER TABLE SPLIT PARTITION command
---
src/backend/commands/tablecmds.c | 406 +++++
src/backend/parser/gram.y | 38 +-
src/backend/parser/parse_utilcmd.c | 62 +-
src/backend/partitioning/partbounds.c | 657 ++++++++
src/backend/utils/adt/ruleutils.c | 18 +
src/include/nodes/parsenodes.h | 1 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 5 +
src/include/utils/ruleutils.h | 2 +
.../isolation/expected/partition-split.out | 190 +++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-split.spec | 54 +
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_split.out | 1417 +++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_split.sql | 833 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
17 files changed, 3679 insertions(+), 12 deletions(-)
create mode 100644 src/test/isolation/expected/partition-split.out
create mode 100644 src/test/isolation/specs/partition-split.spec
create mode 100644 src/test/regress/expected/partition_split.out
create mode 100644 src/test/regress/sql/partition_split.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 2f9889b419f..ef944e3733b 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,9 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab,
+ Relation rel, PartitionCmd *cmd,
+ AlterTableUtilityContext *context);
static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
PartitionCmd *cmd, AlterTableUtilityContext *context);
@@ -4736,6 +4739,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_SplitPartition:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
case AT_MergePartitions:
cmd_lockmode = AccessExclusiveLock;
break;
@@ -5159,6 +5166,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_SplitPartition:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
case AT_MergePartitions:
ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
/* No command-specific prep needed */
@@ -5561,6 +5573,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_SplitPartition:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecSplitPartition(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
case AT_MergePartitions:
cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
cur_pass, context);
@@ -6559,6 +6579,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_SplitPartition:
+ return "SPLIT PARTITION";
case AT_MergePartitions:
return "MERGE PARTITIONS";
case AT_AddIdentity:
@@ -20844,6 +20866,255 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+/*
+ * Struct with context of new partition for insert rows from splited partition
+ */
+typedef struct SplitPartitionContext
+{
+ ExprState *partqualstate; /* expression for check slot for partition
+ * (NULL for DEFAULT partition) */
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot; /* slot for insert row into partition */
+ Relation partRel; /* relation for partition */
+} SplitPartitionContext;
+
+
+/*
+ * createSplitPartitionContext: create context for partition and fill it
+ */
+static SplitPartitionContext *
+createSplitPartitionContext(Relation partRel)
+{
+ SplitPartitionContext *pc;
+
+ pc = (SplitPartitionContext *) palloc0(sizeof(SplitPartitionContext));
+ pc->partRel = partRel;
+
+ /*
+ * Prepare a BulkInsertState for table_tuple_insert. The FSM is empty, so
+ * don't bother using it.
+ */
+ pc->bistate = GetBulkInsertState();
+
+ /* Create tuple slot for new partition. */
+ pc->dstslot = MakeSingleTupleTableSlot(RelationGetDescr(pc->partRel),
+ table_slot_callbacks(pc->partRel));
+ ExecStoreAllNullTuple(pc->dstslot);
+
+ return pc;
+}
+
+/*
+ * deleteSplitPartitionContext: delete context for partition
+ */
+static void
+deleteSplitPartitionContext(SplitPartitionContext *pc, int ti_options)
+{
+ ExecDropSingleTupleTableSlot(pc->dstslot);
+ FreeBulkInsertState(pc->bistate);
+
+ table_finish_bulk_insert(pc->partRel, ti_options);
+
+ pfree(pc);
+}
+
+/*
+ * moveSplitTableRows: scan split partition (splitRel) of partitioned table
+ * (rel) and move rows into new partitions.
+ *
+ * New partitions description:
+ * partlist: list of pointers to SinglePartitionSpec structures.
+ * newPartRels: list of Relation's.
+ * defaultPartOid: oid of DEFAULT partition, for table rel.
+ */
+static void
+moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPartRels, Oid defaultPartOid)
+{
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ CommandId mycid;
+ EState *estate;
+ ListCell *listptr,
+ *listptr2;
+ TupleTableSlot *srcslot;
+ ExprContext *econtext;
+ TableScanDesc scan;
+ Snapshot snapshot;
+ MemoryContext oldCxt;
+ List *partContexts = NIL;
+ TupleConversionMap *tuple_map;
+ SplitPartitionContext *defaultPartCtx = NULL,
+ *pc;
+ bool isOldDefaultPart = false;
+
+ mycid = GetCurrentCommandId(true);
+
+ estate = CreateExecutorState();
+
+ forboth(listptr, partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ pc = createSplitPartitionContext((Relation) lfirst(listptr2));
+
+ if (sps->bound->is_default)
+ {
+ /* We should not create constraint for detached DEFAULT partition. */
+ defaultPartCtx = pc;
+ }
+ else
+ {
+ List *partConstraint;
+
+ /* Build expression execution states for partition check quals. */
+ partConstraint = get_qual_from_partbound(rel, sps->bound);
+ partConstraint =
+ (List *) eval_const_expressions(NULL,
+ (Node *) partConstraint);
+ /* Make boolean expression for ExecCheck(). */
+ partConstraint = list_make1(make_ands_explicit(partConstraint));
+
+ /*
+ * Map the vars in the constraint expression from rel's attnos to
+ * splitRel's.
+ */
+ partConstraint = map_partition_varattnos(partConstraint,
+ 1, splitRel, rel);
+
+ pc->partqualstate =
+ ExecPrepareExpr((Expr *) linitial(partConstraint), estate);
+ Assert(pc->partqualstate != NULL);
+ }
+
+ /* Store partition context into list. */
+ partContexts = lappend(partContexts, pc);
+ }
+
+ /*
+ * Create partition context for DEFAULT partition. We can insert values
+ * into this partition in case spaces with values between new partitions.
+ */
+ if (!defaultPartCtx && OidIsValid(defaultPartOid))
+ {
+ /* Indicate that we allocate context for old DEFAULT partition */
+ isOldDefaultPart = true;
+ defaultPartCtx = createSplitPartitionContext(table_open(defaultPartOid, AccessExclusiveLock));
+ }
+
+ econtext = GetPerTupleExprContext(estate);
+
+ /* Create necessary tuple slot. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(splitRel),
+ table_slot_callbacks(splitRel));
+
+ /*
+ * Map computing for moving attributes of split partition to new partition
+ * (for first new partition but other new partitions can use the same
+ * map).
+ */
+ pc = (SplitPartitionContext *) lfirst(list_head(partContexts));
+ tuple_map = convert_tuples_by_name(RelationGetDescr(splitRel),
+ RelationGetDescr(pc->partRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(splitRel, snapshot, 0, NULL);
+
+ /*
+ * Switch to per-tuple memory context and reset it for each tuple
+ * produced, so we don't leak memory.
+ */
+ oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(estate));
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ bool found = false;
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ econtext->ecxt_scantuple = srcslot;
+
+ /* Search partition for current slot srcslot. */
+ foreach(listptr, partContexts)
+ {
+ pc = (SplitPartitionContext *) lfirst(listptr);
+
+ if (pc->partqualstate /* skip DEFAULT partition */ &&
+ ExecCheck(pc->partqualstate, econtext))
+ {
+ found = true;
+ break;
+ }
+ ResetExprContext(econtext);
+ }
+ if (!found)
+ {
+ /* Use DEFAULT partition if it exists. */
+ if (defaultPartCtx)
+ pc = defaultPartCtx;
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_CHECK_VIOLATION),
+ errmsg("can not find partition for split partition row"),
+ errtable(splitRel)));
+ }
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, pc->dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = pc->dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ table_tuple_insert(pc->partRel, insertslot, mycid, ti_options, pc->bistate);
+
+ ResetExprContext(econtext);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ MemoryContextSwitchTo(oldCxt);
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+
+ FreeExecutorState(estate);
+
+ foreach(listptr, partContexts)
+ deleteSplitPartitionContext((SplitPartitionContext *) lfirst(listptr), ti_options);
+
+ /* Need to close table and free buffers for DEFAULT partition. */
+ if (isOldDefaultPart)
+ {
+ Relation defaultPartRel = defaultPartCtx->partRel;
+
+ deleteSplitPartitionContext(defaultPartCtx, ti_options);
+ /* Keep the lock until commit. */
+ table_close(defaultPartRel, NoLock);
+ }
+}
+
/*
* createPartitionTable: create table for new partition with given name
* (newPartName) like table (modelRelName)
@@ -20898,6 +21169,141 @@ createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
NULL);
}
+/*
+ * ALTER TABLE <name> SPLIT PARTITION <partition-name> INTO <partition-list>
+ */
+static void
+ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation splitRel;
+ Oid splitRelOid;
+ char relname[NAMEDATALEN];
+ Oid namespaceId;
+ ListCell *listptr,
+ *listptr2;
+ bool isSameName = false;
+ char tmpRelName[NAMEDATALEN];
+ List *newPartRels = NIL;
+ ObjectAddress object;
+ RangeVar *splitPartName = cmd->name;
+ Oid defaultPartOid;
+
+ defaultPartOid = get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+
+ /*
+ * We are going to detach and remove this partition: need to use exclusive
+ * lock for prevent DML-queries to the partition.
+ */
+ splitRel = table_openrv(splitPartName, AccessExclusiveLock);
+
+ if (splitRel->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot split non-table partition \"%s\"",
+ RelationGetRelationName(splitRel))));
+
+ splitRelOid = RelationGetRelid(splitRel);
+
+ /* Check descriptions of new partitions. */
+ foreach(listptr, cmd->partlist)
+ {
+ Oid existing_relid;
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ strlcpy(relname, sps->name->relname, NAMEDATALEN);
+
+ /*
+ * Look up the namespace in which we are supposed to create the
+ * partition, check we have permission to create there, lock it
+ * against concurrent drop, and mark stmt->relation as
+ * RELPERSISTENCE_TEMP if a temporary namespace is selected.
+ */
+ namespaceId =
+ RangeVarGetAndCheckCreationNamespace(sps->name, NoLock, NULL);
+
+ /*
+ * This would fail later on anyway, if the relation already exists.
+ * But by catching it here we can emit a nicer error message.
+ */
+ existing_relid = get_relname_relid(relname, namespaceId);
+ if (existing_relid == splitRelOid && !isSameName)
+ /* One new partition can have the same name as split partition. */
+ isSameName = true;
+ else if (existing_relid != InvalidOid)
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("relation \"%s\" already exists", relname)));
+ }
+
+ /* Detach split partition. */
+ RemoveInheritance(splitRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, splitRel, false, defaultPartOid);
+
+ /*
+ * If new partition has the same name as split partition then we should
+ * rename split partition for reuse name.
+ */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ sprintf(tmpRelName, "split-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ RenameRelationInternal(splitRelOid, tmpRelName, false, false);
+ splitPartName = makeRangeVar(get_namespace_name(RelationGetNamespace(splitRel)),
+ tmpRelName, -1);
+
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible after rename.
+ */
+ CommandCounterIncrement();
+ }
+
+ /* Create new partitions (like split partition), without indexes. */
+ foreach(listptr, cmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel;
+
+ createPartitionTable(sps->name, splitPartName, context);
+
+ /* Open the new partition and acquire exclusive lock on it. */
+ newPartRel = table_openrv(sps->name, AccessExclusiveLock);
+
+ newPartRels = lappend(newPartRels, newPartRel);
+ }
+
+ /* Copy data from split partition to new partitions. */
+ moveSplitTableRows(rel, splitRel, cmd->partlist, newPartRels, defaultPartOid);
+ /* Keep the lock until commit. */
+ table_close(splitRel, NoLock);
+
+ /* Attach new partitions to partitioned table. */
+ forboth(listptr, cmd->partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel = (Relation) lfirst(listptr2);
+
+ /* wqueue = NULL: verification for each cloned constraint is not need. */
+ attachPartitionTable(NULL, rel, newPartRel, sps->bound);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+ }
+
+ /* Drop split partition. */
+ object.classId = RelationRelationId;
+ object.objectId = splitRelOid;
+ object.objectSubId = 0;
+ /* Probably DROP_CASCADE is not needed. */
+ performDeletion(&object, DROP_RESTRICT, 0);
+}
+
/*
* moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
* of the partitioned table (rel) and move rows into the new partition
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 0d9d351b445..16d766786b5 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -270,6 +270,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
PartitionElem *partelem;
PartitionSpec *partspec;
PartitionBoundSpec *partboundspec;
+ SinglePartitionSpec *singlepartspec;
RoleSpec *rolespec;
PublicationObjSpec *publicationobjectspec;
struct SelectLimit *selectlimit;
@@ -645,6 +646,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
%type <partelem> part_elem
%type <list> part_params
%type <partboundspec> PartitionBoundSpec
+%type <singlepartspec> SinglePartitionSpec
+%type <list> partitions_list
%type <list> hash_partbound
%type <defelt> hash_partbound_elem
@@ -770,7 +773,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
SAVEPOINT SCALAR SCHEMA SCHEMAS SCROLL SEARCH SECOND_P SECURITY SELECT
SEQUENCE SEQUENCES
SERIALIZABLE SERVER SESSION SESSION_USER SET SETS SETOF SHARE SHOW
- SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SQL_P STABLE STANDALONE_P
+ SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SPLIT SQL_P STABLE STANDALONE_P
START STATEMENT STATISTICS STDIN STDOUT STORAGE STORED STRICT_P STRING_P STRIP_P
SUBSCRIPTION SUBSTRING SUPPORT SYMMETRIC SYSID SYSTEM_P SYSTEM_USER
@@ -2300,6 +2303,23 @@ alter_table_cmds:
| alter_table_cmds ',' alter_table_cmd { $$ = lappend($1, $3); }
;
+partitions_list:
+ SinglePartitionSpec { $$ = list_make1($1); }
+ | partitions_list ',' SinglePartitionSpec { $$ = lappend($1, $3); }
+ ;
+
+SinglePartitionSpec:
+ PARTITION qualified_name PartitionBoundSpec
+ {
+ SinglePartitionSpec *n = makeNode(SinglePartitionSpec);
+
+ n->name = $2;
+ n->bound = $3;
+
+ $$ = n;
+ }
+ ;
+
partition_cmd:
/* ALTER TABLE <name> ATTACH PARTITION <table_name> FOR VALUES */
ATTACH PARTITION qualified_name PartitionBoundSpec
@@ -2344,6 +2364,20 @@ partition_cmd:
n->def = (Node *) cmd;
$$ = (Node *) n;
}
+ /* ALTER TABLE <name> SPLIT PARTITION <partition_name> INTO () */
+ | SPLIT PARTITION qualified_name INTO '(' partitions_list ')'
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_SplitPartition;
+ cmd->name = $3;
+ cmd->bound = NULL;
+ cmd->partlist = $6;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
/* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
| MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
{
@@ -17595,6 +17629,7 @@ unreserved_keyword:
| SIMPLE
| SKIP
| SNAPSHOT
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
@@ -18226,6 +18261,7 @@ bare_label_keyword:
| SMALLINT
| SNAPSHOT
| SOME
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index 48a23c7ca42..88a4a41186a 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -136,7 +136,7 @@ static void transformConstraintAttrs(CreateStmtContext *cxt,
List *constraintList);
static void transformColumnType(CreateStmtContext *cxt, ColumnDef *column);
static void setSchemaName(const char *context_schema, char **stmt_schema_name);
-static void transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd);
+static void transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound);
static List *transformPartitionRangeBounds(ParseState *pstate, List *blist,
Relation parent);
static void validateInfiniteBounds(ParseState *pstate, List *blist);
@@ -3415,6 +3415,43 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForSplit
+ * Analyze the ALTER TABLLE ... SPLIT PARTITION command
+ *
+ * For each new partition sps->bound is set to the transformed value of bound.
+ * Does checks for bounds of new partitions.
+ */
+static void
+transformPartitionCmdForSplit(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Relation parent = cxt->rel;
+ Oid splitPartOid;
+ ListCell *listptr;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ /* Transform partition bounds for all partitions in the list: */
+ foreach(listptr, partcmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ cxt->partbound = NULL;
+ transformPartitionCmd(cxt, sps->bound);
+ /* Assign transformed value of the partition bound. */
+ sps->bound = cxt->partbound;
+ }
+
+ splitPartOid = RangeVarGetRelid(partcmd->name, NoLock, false);
+
+ /* Then we should check partitions with transformed bounds. */
+ check_partitions_for_split(parent, splitPartOid, partcmd->name, partcmd->partlist, cxt->pstate);
+}
+
+
/*
* transformPartitionCmdForMerge
* Analyze the ALTER TABLLE ... MERGE PARTITIONS command
@@ -3751,7 +3788,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
- transformPartitionCmd(&cxt, partcmd);
+ transformPartitionCmd(&cxt, partcmd->bound);
/* assign transformed value of the partition bound */
partcmd->bound = cxt.partbound;
}
@@ -3759,6 +3796,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_SplitPartition:
case AT_MergePartitions:
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
@@ -3767,7 +3805,11 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("list of new partitions should contains at least two items")));
- transformPartitionCmdForMerge(&cxt, partcmd);
+
+ if (cmd->subtype == AT_SplitPartition)
+ transformPartitionCmdForSplit(&cxt, partcmd);
+ else
+ transformPartitionCmdForMerge(&cxt, partcmd);
newcmds = lappend(newcmds, cmd);
break;
}
@@ -4172,13 +4214,13 @@ setSchemaName(const char *context_schema, char **stmt_schema_name)
/*
* transformPartitionCmd
- * Analyze the ATTACH/DETACH PARTITION command
+ * Analyze the ATTACH/DETACH/SPLIT PARTITION command
*
- * In case of the ATTACH PARTITION command, cxt->partbound is set to the
- * transformed value of cmd->bound.
+ * In case of the ATTACH/SPLIT PARTITION command, cxt->partbound is set to the
+ * transformed value of bound.
*/
static void
-transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
+transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound)
{
Relation parentRel = cxt->rel;
@@ -4187,9 +4229,9 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
case RELKIND_PARTITIONED_TABLE:
/* transform the partition bound, if any */
Assert(RelationGetPartitionKey(parentRel) != NULL);
- if (cmd->bound != NULL)
+ if (bound != NULL)
cxt->partbound = transformPartitionBound(cxt->pstate, parentRel,
- cmd->bound);
+ bound);
break;
case RELKIND_PARTITIONED_INDEX:
@@ -4197,7 +4239,7 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
* A partitioned index cannot have a partition bound set. ALTER
* INDEX prevents that with its grammar, but not ALTER TABLE.
*/
- if (cmd->bound != NULL)
+ if (bound != NULL)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("\"%s\" is not a partitioned table",
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index 9ed80d721ed..c36e26ba4bd 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -5040,10 +5040,69 @@ check_two_partitions_bounds_range(Relation parent,
}
}
+/*
+ * check_partitions_not_overlap_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * This is a helper function for check_partitions_for_split().
+ * Checks that the values of the new partitions do not overlap.
+ *
+ * parent: partitioned table
+ * parts: array of SinglePartitionSpec structs with info about split partitions
+ * nparts: size of array "parts"
+ */
+static void
+check_partitions_not_overlap_list(Relation parent,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key PG_USED_FOR_ASSERTS_ONLY = RelationGetPartitionKey(parent);
+ int overlap_location = -1;
+ int i,
+ j;
+ SinglePartitionSpec *sps1,
+ *sps2;
+ List *overlap;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ for (i = 0; i < nparts; i++)
+ {
+ sps1 = parts[i];
+
+ for (j = i + 1; j < nparts; j++)
+ {
+ sps2 = parts[j];
+
+ /*
+ * Calculate intersection between values of two partitions.
+ */
+ overlap = list_intersection(sps1->bound->listdatums,
+ sps2->bound->listdatums);
+ if (list_length(overlap) > 0)
+ {
+ Const *val = (Const *) lfirst(list_head(overlap));
+
+ overlap_location = val->location;
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another new partition \"%s\"",
+ sps1->name->relname, sps2->name->relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ }
+ }
+}
+
/*
* get_partition_bound_spec
*
* Returns description of partition with Oid "partOid" and name "name".
+ *
+ * partOid: partition Oid
+ * name: partition name
*/
static PartitionBoundSpec *
get_partition_bound_spec(Oid partOid, RangeVar *name)
@@ -5076,6 +5135,604 @@ get_partition_bound_spec(Oid partOid, RangeVar *name)
return boundspec;
}
+/*
+ * check_partition_bounds_for_split_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * Checks that bounds of new partition "spec" is inside bounds of split
+ * partition (with Oid splitPartOid). If first=true (this means that "spec" is
+ * the first of new partitions) then lower bound of "spec" should be equal (or
+ * greater than or equal in case defaultPart=true) to lower bound of split
+ * partition. If last=true (this means that "spec" is the last of new
+ * partitions) then upper bound of of "spec" should be equal (or less than or
+ * equal in case defaultPart=true) to upper bound of split partition.
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * first: true in case new partition "spec" is first of new partitions
+ * last: true in case new partition "spec" is last of new partitions
+ * defaultPart: true in case partitioned table has DEFAULT partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_range(Relation parent,
+ char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ bool first,
+ bool last,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *lower,
+ *upper;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+ Assert(spec->strategy == PARTITION_STRATEGY_RANGE);
+
+ lower = make_one_partition_rbound(key, -1, spec->lowerdatums, true);
+ upper = make_one_partition_rbound(key, -1, spec->upperdatums, false);
+
+ /*
+ * First check if the resulting range would be empty with specified lower
+ * and upper bounds. partition_rbound_cmp cannot return zero here, since
+ * the lower-bound flags are different.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, upper);
+ Assert(cmpval != 0);
+ if (cmpval > 0)
+ {
+ /* Point to problematic key in the lower datums list. */
+ PartitionRangeDatum *datum = list_nth(spec->lowerdatums, cmpval - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("empty range bound specified for partition \"%s\"",
+ relname),
+ errdetail("Specified lower bound %s is greater than or equal to upper bound %s.",
+ get_range_partbound_string(spec->lowerdatums),
+ get_range_partbound_string(spec->upperdatums)),
+ parser_errposition(pstate, datum->location)));
+ }
+
+ /* Need to check first and last partitions (from set of new partitions) */
+ if (first || last)
+ {
+ PartitionBoundSpec *split_spec = get_partition_bound_spec(splitPartOid, splitPartName);
+ bool overlap = false;
+
+ if (first)
+ {
+ PartitionRangeBound *split_lower;
+
+ split_lower = make_one_partition_rbound(key, -1, split_spec->lowerdatums, true);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, split_lower);
+
+ /*
+ * Lower bound of "spec" should be equal (or greater than or equal
+ * in case defaultPart=true) to lower bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ overlap = true;
+ }
+ else
+ {
+ PartitionRangeBound *split_upper;
+
+ split_upper = make_one_partition_rbound(key, -1, split_spec->upperdatums, false);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ upper->datums, upper->kind,
+ false, split_upper);
+
+ /*
+ * Upper bound of of "spec" should be equal (or less than or equal
+ * in case defaultPart=true) to upper bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval > 0))
+ overlap = true;
+ }
+
+ if (overlap)
+ {
+ PartitionRangeDatum *datum;
+
+ datum = list_nth(first ? spec->lowerdatums : spec->upperdatums, abs(cmpval) - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("%s bound of partition \"%s\" is %s %s bound of split partition",
+ first ? "lower" : "upper",
+ relname,
+ defaultPart ? (first ? "less than" : "greater than") : "not equals to",
+ first ? "lower" : "upper"),
+ parser_errposition(pstate, datum->location)));
+ }
+ }
+}
+
+/*
+ * check_partition_bounds_for_split_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that bounds of new partition is inside bounds of split partition
+ * (with Oid splitPartOid).
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_list(Relation parent, char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int with = -1;
+ bool overlap = false;
+ int overlap_location = -1;
+ ListCell *cell;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+ Assert(spec->strategy == PARTITION_STRATEGY_LIST);
+ Assert(boundinfo && boundinfo->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Search each value of new partition "spec" in existing partitions. All
+ * of them should be in split partition (with Oid splitPartOid).
+ */
+ foreach(cell, spec->listdatums)
+ {
+ Const *val = lfirst_node(Const, cell);
+
+ overlap_location = val->location;
+ if (!val->constisnull)
+ {
+ int offset;
+ bool equal;
+
+ offset = partition_list_bsearch(&key->partsupfunc[0],
+ key->partcollation,
+ boundinfo,
+ val->constvalue,
+ &equal);
+ if (offset >= 0 && equal)
+ {
+ with = boundinfo->indexes[offset];
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have this value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ else if (partition_bound_accepts_nulls(boundinfo))
+ {
+ with = boundinfo->null_index;
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have NULL value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+
+ if (overlap)
+ {
+ Assert(with >= 0);
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another (not split) partition \"%s\"",
+ relname, get_rel_name(partdesc->oids[with])),
+ parser_errposition(pstate, overlap_location)));
+ }
+}
+
+/*
+ * find_value_in_new_partitions_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Function returns true in case any of new partitions contains value "value".
+ *
+ * partsupfunc: information about comparison function associated with the partition key
+ * partcollation: partitioning collation
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * value: the value that we are looking for
+ * isnull: true if the value that we are looking for is NULL
+ */
+static bool
+find_value_in_new_partitions_list(FmgrInfo *partsupfunc,
+ Oid *partcollation,
+ SinglePartitionSpec **parts,
+ int nparts,
+ Datum value,
+ bool isnull)
+{
+ ListCell *valptr;
+ int i;
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = parts[i];
+
+ foreach(valptr, sps->bound->listdatums)
+ {
+ Const *val = lfirst_node(Const, valptr);
+
+ if (isnull && val->constisnull)
+ return true;
+
+ if (!isnull && !val->constisnull)
+ {
+ if (DatumGetInt32(FunctionCall2Coll(&partsupfunc[0],
+ partcollation[0],
+ val->constvalue,
+ value)) == 0)
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/*
+ * check_parent_values_in_new_partitions
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that all values of split partition (with Oid partOid) contains in new
+ * partitions.
+ *
+ * parent: partitioned table
+ * partOid: split partition Oid
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_parent_values_in_new_partitions(Relation parent,
+ Oid partOid,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int i;
+ bool found = true;
+ bool searchNull = false;
+ Datum datum = PointerGetDatum(NULL);
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Special processing for NULL value. Search NULL-value if it contains
+ * split partition (partOid).
+ */
+ if (partition_bound_accepts_nulls(boundinfo) &&
+ partdesc->oids[boundinfo->null_index] == partOid)
+ {
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, true))
+ {
+ found = false;
+ searchNull = true;
+ }
+ }
+
+ /*
+ * Search all values of split partition with partOid in PartitionDesc of
+ * partitionde table.
+ */
+ for (i = 0; i < boundinfo->ndatums; i++)
+ {
+ if (partdesc->oids[boundinfo->indexes[i]] == partOid)
+ {
+ /* We found value that split partition contains. */
+ datum = boundinfo->datums[i][0];
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, false))
+ {
+ found = false;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ {
+ Const *notFoundVal;
+
+ if (!searchNull)
+ /* Make Const for get string representation of not found value. */
+ notFoundVal = makeConst(key->parttypid[0],
+ key->parttypmod[0],
+ key->parttypcoll[0],
+ key->parttyplen[0],
+ datum,
+ false, /* isnull */
+ key->parttypbyval[0]);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partitions not have value %s but split partition has",
+ searchNull ? "NULL" : get_list_partvalue_string(notFoundVal))));
+ }
+}
+
+/*
+ * check_partitions_for_split
+ *
+ * Checks new partitions for SPLIT PARTITIONS command:
+ * 1. DEFAULT partition should be one.
+ * 2. New partitions should have different names
+ * (with existing partitions too).
+ * 3. Bounds of new partitions should not overlap with new and existing
+ * partitions.
+ * 4. In case split partition is DEFAULT partition, one of new partitions
+ * should be DEFAULT.
+ * 5. In case new partitions or existing partitions contains DEFAULT
+ * partition, new partitions can have any bounds inside split
+ * partition bound (can be spaces between partitions bounds).
+ * 6. In case partitioned table does not have DEFAULT partition, DEFAULT
+ * partition can be defined as one of new partition.
+ * 7. In case new partitions not contains DEFAULT partition and
+ * partitioned table does not have DEFAULT partition the following
+ * should be true: sum bounds of new partitions should be equal
+ * to bound of split partition.
+ *
+ * parent: partitioned table
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * list: list of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate)
+{
+ PartitionKey key;
+ char strategy;
+ Oid defaultPartOid;
+ bool isSplitPartDefault;
+ bool existsDefaultPart;
+ ListCell *listptr;
+ int default_index = -1;
+ int i,
+ j;
+ SinglePartitionSpec **new_parts;
+ SinglePartitionSpec *spsPrev = NULL;
+ int nparts = 0;
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ switch (strategy)
+ {
+ case PARTITION_STRATEGY_LIST:
+ case PARTITION_STRATEGY_RANGE:
+ {
+ /*
+ * Make array new_parts with new partitions except DEFAULT
+ * partition.
+ */
+ new_parts = (SinglePartitionSpec **)
+ palloc0(list_length(partlist) * sizeof(SinglePartitionSpec *));
+ i = 0;
+ foreach(listptr, partlist)
+ {
+ SinglePartitionSpec *sps =
+ (SinglePartitionSpec *) lfirst(listptr);
+
+ if (sps->bound->is_default)
+ {
+ if (default_index >= 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("DEFAULT partition should be one")),
+ parser_errposition(pstate, sps->name->location));
+ default_index = i;
+ }
+ else
+ {
+ new_parts[nparts++] = sps;
+ }
+ i++;
+ }
+ }
+ break;
+
+ case PARTITION_STRATEGY_HASH:
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be split")));
+ break;
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ break;
+ }
+
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ PartitionRangeBound **lower_bounds;
+ SinglePartitionSpec **tmp_new_parts;
+
+ /*
+ * For simplify check for ranges of new partitions need to sort all
+ * partitions in ascending order of them bounds (we compare upper
+ * bound only).
+ */
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /* Create array of lower bounds. */
+ for (i = 0; i < nparts; i++)
+ {
+ lower_bounds[i] = make_one_partition_rbound(key, i,
+ new_parts[i]->bound->lowerdatums, true);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Reorder array of partitions. */
+ tmp_new_parts = new_parts;
+ new_parts = (SinglePartitionSpec **)
+ palloc0(nparts * sizeof(SinglePartitionSpec *));
+ for (i = 0; i < nparts; i++)
+ new_parts[i] = tmp_new_parts[lower_bounds[i]->index];
+
+ pfree(tmp_new_parts);
+ pfree(lower_bounds);
+ }
+
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(parent, true));
+
+ /* isSplitPartDefault flag: is split partition a DEFAULT partition? */
+ isSplitPartDefault = (defaultPartOid == splitPartOid);
+
+ if (isSplitPartDefault && default_index < 0)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("any partition in the list should be DEFAULT because split partition is DEFAULT")),
+ parser_errposition(pstate, ((SinglePartitionSpec *) linitial(partlist))->name->location));
+ }
+ else if (!isSplitPartDefault && (default_index >= 0) && OidIsValid(defaultPartOid))
+ {
+ SinglePartitionSpec *spsDef =
+ (SinglePartitionSpec *) list_nth(partlist, default_index);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition cannot be DEFAULT because DEFAULT partition already exists")),
+ parser_errposition(pstate, spsDef->name->location));
+ }
+
+ /* Indicator that partitioned table has (or will have) DEFAULT partition */
+ existsDefaultPart = OidIsValid(defaultPartOid) || (default_index >= 0);
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = new_parts[i];
+
+ if (isSplitPartDefault)
+ {
+ /*
+ * In case split partition is DEFAULT partition we can use any
+ * free ranges - as when creating a new partition.
+ */
+ check_new_partition_bound(sps->name->relname, parent, sps->bound,
+ pstate);
+ }
+ else
+ {
+ /*
+ * Checks that bound of current partition is inside bound of split
+ * partition. For range partitioning: checks that upper bound of
+ * previous partition is equal to lower bound of current
+ * partition. For list partitioning: checks that split partition
+ * contains all values of current partition.
+ */
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ bool first = (i == 0);
+ bool last = (i == (nparts - 1));
+
+ check_partition_bounds_for_split_range(parent, sps->name->relname, sps->bound,
+ splitPartOid, splitPartName,
+ first, last,
+ existsDefaultPart, pstate);
+ }
+ else
+ check_partition_bounds_for_split_list(parent, sps->name->relname,
+ sps->bound, splitPartOid, pstate);
+ }
+
+ /* Ranges of new partitions should not overlap. */
+ if (strategy == PARTITION_STRATEGY_RANGE && spsPrev)
+ check_two_partitions_bounds_range(parent, spsPrev->name, spsPrev->bound,
+ sps->name, sps->bound, existsDefaultPart, pstate);
+
+ spsPrev = sps;
+
+ /* Check: new partitions should have different names. */
+ for (j = i + 1; j < nparts; j++)
+ {
+ SinglePartitionSpec *sps2 = new_parts[j];
+
+ if (equal(sps->name, sps2->name))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("name \"%s\" already used", sps2->name->relname)),
+ parser_errposition(pstate, sps2->name->location));
+ }
+ }
+
+ if (strategy == PARTITION_STRATEGY_LIST)
+ {
+ /* Values of new partitions should not overlap. */
+ check_partitions_not_overlap_list(parent, new_parts, nparts,
+ pstate);
+
+ /*
+ * Need to check that all values of split partition contains in new
+ * partitions. Skip this check if DEFAULT partition exists.
+ */
+ if (!existsDefaultPart)
+ check_parent_values_in_new_partitions(parent, splitPartOid,
+ new_parts, nparts, pstate);
+ }
+
+ pfree(new_parts);
+}
+
/*
* calculate_partition_bound_for_merge
*
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index a51717e36ce..65d64241563 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -13029,3 +13029,21 @@ get_range_partbound_string(List *bound_datums)
return buf->data;
}
+
+/*
+ * get_list_partvalue_string
+ * A C string representation of one list partition value
+ */
+char *
+get_list_partvalue_string(Const *val)
+{
+ deparse_context context;
+ StringInfo buf = makeStringInfo();
+
+ memset(&context, 0, sizeof(deparse_context));
+ context.buf = buf;
+
+ get_const_expr(val, &context, -1);
+
+ return buf->data;
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 27c28139c84..03c1f27053f 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -2344,6 +2344,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_SplitPartition, /* SPLIT PARTITION */
AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index e2b4700d97b..480896e7b66 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -415,6 +415,7 @@ PG_KEYWORD("skip", SKIP, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("smallint", SMALLINT, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("snapshot", SNAPSHOT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("some", SOME, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("split", SPLIT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("sql", SQL_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("stable", STABLE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("standalone", STANDALONE_P, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 0329d7bd848..9d2a26705f0 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,6 +143,11 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate);
extern void calculate_partition_bound_for_merge(Relation parent,
List *partNames,
List *partOids,
diff --git a/src/include/utils/ruleutils.h b/src/include/utils/ruleutils.h
index 161fb5ef02c..6d860806221 100644
--- a/src/include/utils/ruleutils.h
+++ b/src/include/utils/ruleutils.h
@@ -49,4 +49,6 @@ extern char *get_range_partbound_string(List *bound_datums);
extern char *pg_get_statisticsobjdef_string(Oid statextid);
+extern char *get_list_partvalue_string(Const *val);
+
#endif /* RULEUTILS_H */
diff --git a/src/test/isolation/expected/partition-split.out b/src/test/isolation/expected/partition-split.out
new file mode 100644
index 00000000000..5d9e8b0925f
--- /dev/null
+++ b/src/test/isolation/expected/partition-split.out
@@ -0,0 +1,190 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s1b s1splt s2b s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2brr s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2bs s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2b s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2brr s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2bs s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2b s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2brr s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2bs s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 8bcaa8a6254..0342eb39e40 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -104,6 +104,7 @@ test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
test: partition-merge
+test: partition-split
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-split.spec b/src/test/isolation/specs/partition-split.spec
new file mode 100644
index 00000000000..087239a4a19
--- /dev/null
+++ b/src/test/isolation/specs/partition-split.spec
@@ -0,0 +1,54 @@
+# Verify that SPLIT operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1splt { ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20)); }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s1 starts SPLIT PARTITION then s2 trying to insert row and
+# waits until s1 finished SPLIT operation.
+
+permutation s1b s1splt s2b s2i s1c s2c s2s
+permutation s1b s1splt s2brr s2i s1c s2c s2s
+permutation s1b s1splt s2bs s2i s1c s2c s2s
+
+permutation s1brr s1splt s2b s2i s1c s2c s2s
+permutation s1brr s1splt s2brr s2i s1c s2c s2s
+permutation s1brr s1splt s2bs s2i s1c s2c s2s
+
+permutation s1bs s1splt s2b s2i s1c s2c s2s
+permutation s1bs s1splt s2brr s2i s1c s2c s2s
+permutation s1bs s1splt s2bs s2i s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 69920757b21..265ef2a5470 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_SplitPartition:
+ strtype = "SPLIT PARTITION";
+ break;
case AT_MergePartitions:
strtype = "MERGE PARTITIONS";
break;
diff --git a/src/test/regress/expected/partition_split.out b/src/test/regress/expected/partition_split.out
new file mode 100644
index 00000000000..7eb52f6feef
--- /dev/null
+++ b/src/test/regress/expected/partition_split.out
@@ -0,0 +1,1417 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_xxx" does not exist
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_jan2022" already exists
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: invalid bound specification for a range partition
+LINE 2: (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '202...
+ ^
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: empty range bound specified for partition "sales_mar2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+DETAIL: Specified lower bound ('03-01-2022') is greater than or equal to upper bound ('02-01-2022').
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+ERROR: list of new partitions should contains at least two items
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO...
+ ^
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb_mar_apr2022" already used
+LINE 3: PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03...
+ ^
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb2022" already used
+LINE 3: PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+LINE 4: ... sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-0...
+ ^
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_feb2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO...
+ ^
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO...
+ ^
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(4 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+ERROR: relation "sales_jan_feb2022" does not exist
+LINE 1: SELECT * FROM sales_jan_feb2022;
+ ^
+DROP TABLE sales_date CASCADE;
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 7 | Li | 175 | 03-08-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 11 | Trump | 380 | 04-06-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(11 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+-----------------------------+------------+----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx | | CREATE INDEX sales_others_sales_date_idx ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_feb2022 | sales_feb2022_sales_date_idx | | CREATE INDEX sales_feb2022_sales_date_idx ON partition_split_schema.sales_feb2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_mar2022 | sales_mar2022_sales_date_idx | | CREATE INDEX sales_mar2022_sales_date_idx ON partition_split_schema.sales_mar2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_apr2022 | sales_apr2022_sales_date_idx | | CREATE INDEX sales_apr2022_sales_date_idx ON partition_split_schema.sales_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+------------------------------+------------+-----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx1 | | CREATE INDEX sales_others_sales_date_idx1 ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211230) TO (2022...
+ ^
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+LINE 4: PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20...
+ ^
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211210) TO (2021...
+ ^
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211201) TO (2022...
+ ^
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+LINE 2: (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20...
+ ^
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_sales_amount_check"
+DETAIL: Failing row contains (1, 0, 03-11-2022).
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(-1) is not present in table "salesmans".
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(40) is not present in table "salesmans".
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+SELECT * FROM salesmans1_2;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans2_3;
+ salesman_id | salesman_name
+-------------+---------------
+ 2 | Ivanov
+(1 row)
+
+SELECT * FROM salesmans3_4;
+ salesman_id | salesman_name
+-------------+---------------
+ 3 | May
+(1 row)
+
+SELECT * FROM salesmans4_5;
+ salesman_id | salesman_name
+-------------+---------------
+ 4 | Ford
+(1 row)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+(2 rows)
+
+select * from salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+select * from salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_east" would overlap with another (not split) partition "sales_nord"
+LINE 3: ...ALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'...
+ ^
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+LINE 2: (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk...
+ ^
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+LINE 2: ...est FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ ^
+DROP TABLE sales_list;
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partitions not have value NULL but split partition has
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+ERROR: new partitions not have value 'Volgograd' but split partition has
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_west;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+(4 rows)
+
+SELECT * FROM sales_east;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+(2 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_central;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(4 rows)
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 026e7a77675..7cd4deda9bf 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_split partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_split.sql b/src/test/regress/sql/partition_split.sql
new file mode 100644
index 00000000000..40c71889b6e
--- /dev/null
+++ b/src/test/regress/sql/partition_split.sql
@@ -0,0 +1,833 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+
+DROP TABLE sales_date CASCADE;
+
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_others;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+
+SELECT * FROM salesmans1_2;
+SELECT * FROM salesmans2_3;
+SELECT * FROM salesmans3_4;
+SELECT * FROM salesmans4_5;
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+select * from salesmans01_10;
+select * from salesmans10_20;
+select * from salesmans20_30;
+select * from salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+DROP TABLE sales_list;
+
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_west;
+SELECT * FROM sales_east;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_central;
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index aa3025676fd..877c1101f2e 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2666,6 +2666,7 @@ SpecialJoinInfo
SpinDelayStatus
SplitInterval
SplitLR
+SplitPartitionContext
SplitPageLayout
SplitPoint
SplitTextOutputData
--
2.39.3 (Apple Git-145)
[application/octet-stream] 0001-ALTER-TABLE-MERGE-PARTITIONS-command-v26.patch (105.2K, ../../CAPpHfdsVQwnZPxaQPwcu1g_01F0d-o=ECRcf14X3CmavJB6vSQ@mail.gmail.com/5-0001-ALTER-TABLE-MERGE-PARTITIONS-command-v26.patch)
download | inline diff:
From 2f1b8f766129a5e563df5aac86510add2052e71c Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 16:06:03 +0300
Subject: [PATCH 1/4] ALTER TABLE MERGE PARTITIONS command
---
src/backend/commands/tablecmds.c | 349 ++++++++-
src/backend/parser/gram.y | 22 +-
src/backend/parser/parse_utilcmd.c | 89 +++
src/backend/partitioning/partbounds.c | 207 +++++
src/include/nodes/parsenodes.h | 14 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 6 +
.../isolation/expected/partition-merge.out | 199 +++++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-merge.spec | 54 ++
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_merge.out | 736 ++++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_merge.sql | 434 +++++++++++
src/tools/pgindent/typedefs.list | 1 +
15 files changed, 2099 insertions(+), 19 deletions(-)
create mode 100644 src/test/isolation/expected/partition-merge.out
create mode 100644 src/test/isolation/specs/partition-merge.spec
create mode 100644 src/test/regress/expected/partition_merge.out
create mode 100644 src/test/regress/sql/partition_merge.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 8a02c5b05b6..2f9889b419f 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,8 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context);
/* ----------------------------------------------------------------
* DefineRelation
@@ -4734,6 +4736,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_MergePartitions:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5153,6 +5159,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_MergePartitions:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5550,6 +5561,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_MergePartitions:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecMergePartitions(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -6540,6 +6559,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_MergePartitions:
+ return "MERGE PARTITIONS";
case AT_AddIdentity:
return "ALTER COLUMN ... ADD IDENTITY";
case AT_SetIdentity:
@@ -19034,6 +19055,37 @@ QueuePartitionConstraintValidation(List **wqueue, Relation scanrel,
}
}
+/*
+ * attachPartitionTable: attach new partition to partitioned table
+ *
+ * wqueue: the ALTER TABLE work queue; can be NULL when not running as part
+ * of an ALTER TABLE sequence.
+ * rel: partitioned relation;
+ * attachrel: relation of attached partition;
+ * bound: bounds of attached relation.
+ */
+static void
+attachPartitionTable(List **wqueue, Relation rel, Relation attachrel, PartitionBoundSpec *bound)
+{
+ /* OK to create inheritance. Rest of the checks performed there */
+ CreateInheritance(attachrel, rel, true);
+
+ /* Update the pg_class entry. */
+ StorePartitionBound(attachrel, rel, bound);
+
+ /* Ensure there exists a correct set of indexes in the partition. */
+ AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
+
+ /* and triggers */
+ CloneRowTriggersToPartition(rel, attachrel);
+
+ /*
+ * Clone foreign key constraints. Callee is responsible for setting up
+ * for phase 3 constraint verification.
+ */
+ CloneForeignKeyConstraints(wqueue, rel, attachrel);
+}
+
/*
* ALTER TABLE <name> ATTACH PARTITION <partition-name> FOR VALUES
*
@@ -19236,23 +19288,8 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd,
check_new_partition_bound(RelationGetRelationName(attachrel), rel,
cmd->bound, pstate);
- /* OK to create inheritance. Rest of the checks performed there */
- CreateInheritance(attachrel, rel, true);
-
- /* Update the pg_class entry. */
- StorePartitionBound(attachrel, rel, cmd->bound);
-
- /* Ensure there exists a correct set of indexes in the partition. */
- AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
-
- /* and triggers */
- CloneRowTriggersToPartition(rel, attachrel);
-
- /*
- * Clone foreign key constraints. Callee is responsible for setting up
- * for phase 3 constraint verification.
- */
- CloneForeignKeyConstraints(wqueue, rel, attachrel);
+ /* Attach a new partition to the partitioned table. */
+ attachPartitionTable(wqueue, rel, attachrel, cmd->bound);
/*
* Generate partition constraint from the partition bound specification.
@@ -20806,3 +20843,281 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+
+/*
+ * createPartitionTable: create table for new partition with given name
+ * (newPartName) like table (modelRelName)
+ *
+ * Emulates command: CREATE TABLE <newPartName> (LIKE <modelRelName>
+ * INCLUDING ALL EXCLUDING INDEXES EXCLUDING IDENTITY)
+ */
+static void
+createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
+ AlterTableUtilityContext *context)
+{
+ CreateStmt *createStmt;
+ TableLikeClause *tlc;
+ PlannedStmt *wrapper;
+
+ createStmt = makeNode(CreateStmt);
+ createStmt->relation = newPartName;
+ createStmt->tableElts = NIL;
+ createStmt->inhRelations = NIL;
+ createStmt->constraints = NIL;
+ createStmt->options = NIL;
+ createStmt->oncommit = ONCOMMIT_NOOP;
+ createStmt->tablespacename = NULL;
+ createStmt->if_not_exists = false;
+
+ tlc = makeNode(TableLikeClause);
+ tlc->relation = modelRelName;
+
+ /*
+ * Indexes will be inherited on "attach new partitions" stage, after data
+ * moving.
+ */
+ tlc->options = CREATE_TABLE_LIKE_ALL & ~(CREATE_TABLE_LIKE_INDEXES | CREATE_TABLE_LIKE_IDENTITY);
+ tlc->relationOid = InvalidOid;
+ createStmt->tableElts = lappend(createStmt->tableElts, tlc);
+
+ /* Need to make a wrapper PlannedStmt. */
+ wrapper = makeNode(PlannedStmt);
+ wrapper->commandType = CMD_UTILITY;
+ wrapper->canSetTag = false;
+ wrapper->utilityStmt = (Node *) createStmt;
+ wrapper->stmt_location = context->pstmt->stmt_location;
+ wrapper->stmt_len = context->pstmt->stmt_len;
+
+ ProcessUtility(wrapper,
+ context->queryString,
+ false,
+ PROCESS_UTILITY_SUBCOMMAND,
+ NULL,
+ NULL,
+ None_Receiver,
+ NULL);
+}
+
+/*
+ * moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
+ * of the partitioned table (rel) and move rows into the new partition
+ * (newPartRel).
+ */
+static void
+moveMergedTablesRows(Relation rel, List *mergingPartitionsList,
+ Relation newPartRel)
+{
+ CommandId mycid;
+
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ ListCell *listptr;
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot;
+
+ mycid = GetCurrentCommandId(true);
+
+ /* Prepare a BulkInsertState for table_tuple_insert. */
+ bistate = GetBulkInsertState();
+
+ /* Create necessary tuple slot. */
+ dstslot = MakeSingleTupleTableSlot(RelationGetDescr(newPartRel),
+ table_slot_callbacks(newPartRel));
+ ExecStoreAllNullTuple(dstslot);
+
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+ TupleTableSlot *srcslot;
+ TupleConversionMap *tuple_map;
+ TableScanDesc scan;
+ Snapshot snapshot;
+
+ /* Create tuple slot for new partition. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(mergingPartition),
+ table_slot_callbacks(mergingPartition));
+
+ /*
+ * Map computing for moving attributes of merged partition to new
+ * partition.
+ */
+ tuple_map = convert_tuples_by_name(RelationGetDescr(mergingPartition),
+ RelationGetDescr(newPartRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(mergingPartition, snapshot, 0, NULL);
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ table_tuple_insert(newPartRel, insertslot, mycid, ti_options, bistate);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+ }
+
+ ExecDropSingleTupleTableSlot(dstslot);
+ FreeBulkInsertState(bistate);
+
+ table_finish_bulk_insert(newPartRel, ti_options);
+}
+
+/*
+ * ALTER TABLE <name> MERGE PARTITIONS <partition-list> INTO <partition-name>
+ */
+static void
+ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation newPartRel;
+ ListCell *listptr;
+ List *mergingPartitionsList = NIL;
+ Oid defaultPartOid;
+ char tmpRelName[NAMEDATALEN];
+ RangeVar *mergePartName = cmd->name;
+ bool isSameName = false;
+
+ /*
+ * Lock all merged partitions, check them and create list with partitions
+ * contexts.
+ */
+ foreach(listptr, cmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+ Relation mergingPartition;
+
+ /*
+ * We are going to detach and remove this partition: need to use
+ * exclusive lock for prevent DML-queries to the partition.
+ */
+ mergingPartition = table_openrv(name, AccessExclusiveLock);
+
+ if (mergingPartition->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot merge non-table partition \"%s\"",
+ RelationGetRelationName(mergingPartition))));
+
+ /*
+ * Checking that two partitions have the same name was before, in
+ * function transformPartitionCmdForMerge().
+ */
+ if (equal(name, cmd->name))
+ /* One new partition can have the same name as merged partition. */
+ isSameName = true;
+
+ /* Store a next merging partition into the list. */
+ mergingPartitionsList = lappend(mergingPartitionsList,
+ mergingPartition);
+ }
+
+ /* Detach all merged partitions. */
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(mergingPartition, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, mergingPartition, false, defaultPartOid);
+ }
+
+ /* Create table for new partition, use partitioned table as model. */
+ if (isSameName)
+ {
+ /* Create partition table with generated temparary name. */
+ sprintf(tmpRelName, "merge-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ mergePartName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ tmpRelName, -1);
+ }
+ createPartitionTable(mergePartName,
+ makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1),
+ context);
+
+ /*
+ * Open the new partition and acquire exclusive lock on it. This will
+ * stop all the operations with partitioned table. This might seem
+ * excessive, but this is the way we make sure nobody is planning queries
+ * involving merging partitions.
+ */
+ newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+
+ /* Copy data from merged partitions to new partition. */
+ moveMergedTablesRows(rel, mergingPartitionsList, newPartRel);
+
+ /*
+ * Attach a new partition to the partitioned table. wqueue = NULL:
+ * verification for each cloned constraint is not need.
+ */
+ attachPartitionTable(NULL, rel, newPartRel, cmd->bound);
+
+ /* Unlock and drop merged partitions. */
+ foreach(listptr, mergingPartitionsList)
+ {
+ ObjectAddress object;
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Get relation id before table_close() call. */
+ object.objectId = RelationGetRelid(mergingPartition);
+ object.classId = RelationRelationId;
+ object.objectSubId = 0;
+
+ /* Keep the lock until commit. */
+ table_close(mergingPartition, NoLock);
+
+ performDeletion(&object, DROP_RESTRICT, 0);
+ }
+ list_free(mergingPartitionsList);
+
+ /* Rename new partition if it is needed. */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the new partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ RenameRelationInternal(RelationGetRelid(newPartRel),
+ cmd->name->relname, false, false);
+ }
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+}
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index c1b0cff1c9e..0d9d351b445 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -755,7 +755,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
ORDER ORDINALITY OTHERS OUT_P OUTER_P
OVER OVERLAPS OVERLAY OVERRIDING OWNED OWNER
- PARALLEL PARAMETER PARSER PARTIAL PARTITION PASSING PASSWORD
+ PARALLEL PARAMETER PARSER PARTIAL PARTITION PARTITIONS PASSING PASSWORD
PERIOD PLACING PLANS POLICY
POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
PRIOR PRIVILEGES PROCEDURAL PROCEDURE PROCEDURES PROGRAM PUBLICATION
@@ -2310,6 +2310,7 @@ partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = $4;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -2324,6 +2325,7 @@ partition_cmd:
n->subtype = AT_DetachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = $4;
n->def = (Node *) cmd;
@@ -2337,6 +2339,21 @@ partition_cmd:
n->subtype = AT_DetachPartitionFinalize;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
+ /* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
+ | MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_MergePartitions;
+ cmd->name = $7;
+ cmd->bound = NULL;
+ cmd->partlist = $4;
cmd->concurrent = false;
n->def = (Node *) cmd;
$$ = (Node *) n;
@@ -2353,6 +2370,7 @@ index_partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -17510,6 +17528,7 @@ unreserved_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
@@ -18128,6 +18147,7 @@ bare_label_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index c7efd8d8cee..48a23c7ca42 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -58,6 +58,8 @@
#include "parser/parse_type.h"
#include "parser/parse_utilcmd.h"
#include "parser/parser.h"
+#include "partitioning/partdesc.h"
+#include "partitioning/partbounds.h"
#include "rewrite/rewriteManip.h"
#include "utils/acl.h"
#include "utils/builtins.h"
@@ -3413,6 +3415,80 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForMerge
+ * Analyze the ALTER TABLLE ... MERGE PARTITIONS command
+ *
+ * Does simple checks for merged partitions. Calculates bound of result
+ * partition.
+ */
+static void
+transformPartitionCmdForMerge(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Oid defaultPartOid;
+ Oid partOid;
+ Relation parent = cxt->rel;
+ PartitionKey key;
+ char strategy;
+ ListCell *listptr,
+ *listptr2;
+ bool isDefaultPart = false;
+ List *partOids = NIL;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ if (strategy == PARTITION_STRATEGY_HASH)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be merged")));
+
+ /* Is current partition a DEFAULT partition? */
+ defaultPartOid = get_default_oid_from_partdesc(
+ RelationGetPartitionDesc(parent, true));
+
+ foreach(listptr, partcmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+
+ /* Partitions in the list should have different names. */
+ for_each_cell(listptr2, partcmd->partlist, lnext(partcmd->partlist, listptr))
+ {
+ RangeVar *name2 = (RangeVar *) lfirst(listptr2);
+
+ if (equal(name, name2))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("partition with name \"%s\" already used", name->relname)),
+ parser_errposition(cxt->pstate, name2->location));
+ }
+
+ /* Search DEFAULT partition in the list. */
+ partOid = RangeVarGetRelid(name, NoLock, false);
+ if (partOid == defaultPartOid)
+ isDefaultPart = true;
+ partOids = lappend_oid(partOids, partOid);
+ }
+
+ /* Allocate bound of result partition. */
+ Assert(partcmd->bound == NULL);
+ partcmd->bound = makeNode(PartitionBoundSpec);
+
+ /* Fill partition bound. */
+ partcmd->bound->strategy = strategy;
+ partcmd->bound->location = -1;
+ partcmd->bound->is_default = isDefaultPart;
+ if (!isDefaultPart)
+ calculate_partition_bound_for_merge(parent, partcmd->partlist,
+ partOids, partcmd->bound,
+ cxt->pstate);
+}
+
/*
* transformAlterTableStmt -
* parse analysis for ALTER TABLE
@@ -3683,6 +3759,19 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_MergePartitions:
+ {
+ PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
+
+ if (list_length(partcmd->partlist) < 2)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("list of new partitions should contains at least two items")));
+ transformPartitionCmdForMerge(&cxt, partcmd);
+ newcmds = lappend(newcmds, cmd);
+ break;
+ }
+
default:
/*
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index c28639d2e3f..9ed80d721ed 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -4977,3 +4977,210 @@ satisfies_hash_partition(PG_FUNCTION_ARGS)
PG_RETURN_BOOL(rowHash % modulus == remainder);
}
+
+/*
+ * check_two_partitions_bounds_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * This is a helper function for check_partitions_for_split() and
+ * calculate_partition_bound_for_merge().
+ * This function compares upper bound of first_bound and lower bound of
+ * second_bound. These bounds should be equals except case
+ * "defaultPart == true" (this means that one of split partitions is DEFAULT).
+ * In this case upper bound of first_bound can be less than lower bound of
+ * second_bound because space between of these bounds will be included in
+ * DEFAULT partition.
+ *
+ * parent: partitioned table
+ * first_name: name of first partition
+ * first_bound: bound of first partition
+ * second_name: name of second partition
+ * second_bound: bound of second partition
+ * defaultPart: true if one of split partitions is DEFAULT
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_two_partitions_bounds_range(Relation parent,
+ RangeVar *first_name,
+ PartitionBoundSpec *first_bound,
+ RangeVar *second_name,
+ PartitionBoundSpec *second_bound,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *first_upper;
+ PartitionRangeBound *second_lower;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+
+ first_upper = make_one_partition_rbound(key, -1, first_bound->upperdatums, false);
+ second_lower = make_one_partition_rbound(key, -1, second_bound->lowerdatums, true);
+
+ /*
+ * lower1=false (the second to last argument) for correct comparison lower
+ * and upper bounds.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ second_lower->datums, second_lower->kind,
+ false, first_upper);
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ {
+ PartitionRangeDatum *datum = linitial(second_bound->lowerdatums);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("lower bound of partition \"%s\" conflicts with upper bound of previous partition \"%s\"",
+ second_name->relname, first_name->relname),
+ parser_errposition(pstate, datum->location)));
+ }
+}
+
+/*
+ * get_partition_bound_spec
+ *
+ * Returns description of partition with Oid "partOid" and name "name".
+ */
+static PartitionBoundSpec *
+get_partition_bound_spec(Oid partOid, RangeVar *name)
+{
+ HeapTuple tuple;
+ Datum datum;
+ bool isnull;
+ PartitionBoundSpec *boundspec = NULL;
+
+ /* Try fetching the tuple from the catcache, for speed. */
+ tuple = SearchSysCache1(RELOID, partOid);
+ if (!HeapTupleIsValid(tuple))
+ elog(ERROR, "cache lookup failed for relation \"%s\"",
+ name->relname);
+
+ datum = SysCacheGetAttr(RELOID, tuple,
+ Anum_pg_class_relpartbound,
+ &isnull);
+ if (isnull)
+ elog(ERROR, "partition bound for relation \"%s\" is null",
+ name->relname);
+
+ boundspec = stringToNode(TextDatumGetCString(datum));
+
+ if (!IsA(boundspec, PartitionBoundSpec))
+ elog(ERROR, "expected PartitionBoundSpec for relation \"%s\"",
+ name->relname);
+
+ ReleaseSysCache(tuple);
+ return boundspec;
+}
+
+/*
+ * calculate_partition_bound_for_merge
+ *
+ * Calculates the bound of merged partition "spec" by using the bounds of
+ * partitions to be merged.
+ *
+ * parent: partitioned table
+ * partNames: names of partitions to be merged
+ * partOids: Oids of partitions to be merged
+ * spec (out): bounds specification of the merged partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionBoundSpec *bound;
+
+ Assert(!spec->is_default);
+
+ switch (key->strategy)
+ {
+ case PARTITION_STRATEGY_RANGE:
+ {
+ int i;
+ PartitionRangeBound **lower_bounds;
+ int nparts = list_length(partOids);
+ List *bounds = NIL;
+
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /*
+ * Create array of lower bounds and list of
+ * PartitionBoundSpec.
+ */
+ for (i = 0; i < nparts; i++)
+ {
+ bound = get_partition_bound_spec(list_nth_oid(partOids, i),
+ (RangeVar *) list_nth(partNames, i));
+
+ lower_bounds[i] = make_one_partition_rbound(key, i, bound->lowerdatums, true);
+ bounds = lappend(bounds, bound);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Ranges of partitions should not overlap. */
+ for (i = 1; i < nparts; i++)
+ {
+ int index = lower_bounds[i]->index;
+ int prev_index = lower_bounds[i - 1]->index;
+
+ check_two_partitions_bounds_range(parent,
+ (RangeVar *) list_nth(partNames, prev_index),
+ (PartitionBoundSpec *) list_nth(bounds, prev_index),
+ (RangeVar *) list_nth(partNames, index),
+ (PartitionBoundSpec *) list_nth(bounds, index),
+ false, pstate);
+ }
+
+ /*
+ * Lower bound of first partition is a lower bound of merged
+ * partition.
+ */
+ spec->lowerdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[0]->index))->lowerdatums;
+
+ /*
+ * Upper bound of last partition is a upper bound of merged
+ * partition.
+ */
+ spec->upperdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[nparts - 1]->index))->upperdatums;
+
+ pfree(lower_bounds);
+ list_free(bounds);
+ break;
+ }
+
+ case PARTITION_STRATEGY_LIST:
+ {
+ ListCell *listptr,
+ *listptr2;
+
+ /* Consolidate bounds for all partitions in the list. */
+ forboth(listptr, partOids, listptr2, partNames)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr2);
+ Oid curOid = lfirst_oid(listptr);
+
+ bound = get_partition_bound_spec(curOid, name);
+ spec->listdatums = list_concat(spec->listdatums, bound->listdatums);
+ }
+ break;
+ }
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ }
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index b89baef95d3..27c28139c84 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -933,6 +933,17 @@ typedef struct PartitionRangeDatum
ParseLoc location; /* token location, or -1 if unknown */
} PartitionRangeDatum;
+/*
+ * PartitionDesc - info about single partition for ALTER TABLE SPLIT PARTITION command
+ */
+typedef struct SinglePartitionSpec
+{
+ NodeTag type;
+
+ RangeVar *name; /* name of partition */
+ PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+} SinglePartitionSpec;
+
/*
* PartitionCmd - info for ALTER TABLE/INDEX ATTACH/DETACH PARTITION commands
*/
@@ -941,6 +952,8 @@ typedef struct PartitionCmd
NodeTag type;
RangeVar *name; /* name of partition to attach/detach */
PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+ List *partlist; /* list of partitions, for SPLIT PARTITION
+ * command */
bool concurrent;
} PartitionCmd;
@@ -2331,6 +2344,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
AT_DropIdentity, /* DROP IDENTITY */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 57514d064b7..e2b4700d97b 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -333,6 +333,7 @@ PG_KEYWORD("parameter", PARAMETER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("parser", PARSER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partial", PARTIAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partition", PARTITION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("partitions", PARTITIONS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("passing", PASSING, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("password", PASSWORD, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("period", PERIOD, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 3d9cc1031f7..0329d7bd848 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,4 +143,10 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate);
+
#endif /* PARTBOUNDS_H */
diff --git a/src/test/isolation/expected/partition-merge.out b/src/test/isolation/expected/partition-merge.out
new file mode 100644
index 00000000000..98446aaab5a
--- /dev/null
+++ b/src/test/isolation/expected/partition-merge.out
@@ -0,0 +1,199 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 188fc04f85e..8bcaa8a6254 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -103,6 +103,7 @@ test: partition-key-update-1
test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
+test: partition-merge
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-merge.spec b/src/test/isolation/specs/partition-merge.spec
new file mode 100644
index 00000000000..ec48732c583
--- /dev/null
+++ b/src/test/isolation/specs/partition-merge.spec
@@ -0,0 +1,54 @@
+# Verify that MERGE operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1merg { ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20; }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2u { UPDATE tpart SET t = 'text01modif' where i = 1; }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s2 inserts row into table. s1 starts MERGE PARTITIONS then
+# s2 trying to update inserted row and waits until s1 finished
+# MERGE operation.
+
+permutation s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 48563b2cf01..69920757b21 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_MergePartitions:
+ strtype = "MERGE PARTITIONS";
+ break;
case AT_AddIdentity:
strtype = "ADD IDENTITY";
break;
diff --git a/src/test/regress/expected/partition_merge.out b/src/test/regress/expected/partition_merge.out
new file mode 100644
index 00000000000..013ab659618
--- /dev/null
+++ b/src/test/regress/expected/partition_merge.out
@@ -0,0 +1,736 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+ERROR: partition with name "sales_feb2022" already used
+LINE 1: ...e MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2...
+ ^
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+ERROR: cannot merge non-table partition "sales_apr2022"
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_jan2022"
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+ERROR: lower bound of partition "sales_jan2022" conflicts with upper bound of previous partition "sales_dec2021"
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | p | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_dec2021 | r | f | FOR VALUES FROM ('12-01-2021') TO ('12-31-2021')
+ sales_jan_feb_mar2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+ pg_get_partkeydef
+--------------------
+ RANGE (sales_date)
+(1 row)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_mar2022 | r | f | FOR VALUES FROM ('03-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_feb_mar_apr2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('05-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+-------------------------+-----------------------+--------------------------------------+------------+-----------------------------------------------------------------------------------------------------------------------------
+ partitions_merge_schema | sales_feb_mar_apr2022 | sales_feb_mar_apr2022_sales_date_idx | | CREATE INDEX sales_feb_mar_apr2022_sales_date_idx ON partitions_merge_schema.sales_feb_mar_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb_mar_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(10 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(10 rows)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_range;
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+select * from sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(7 rows)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+(2 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(2 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(6 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+DROP TABLE sales_date;
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+select * from salesmans;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(6 rows)
+
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(5 rows)
+
+DROP TABLE salesmans;
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr_all;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+ERROR: partition bound for relation "sales_external" is null
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+ERROR: partition bound for relation "sales_external2" is null
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------------
+ sales_central | r | f | FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd')
+ sales_east | r | f | FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_west | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+--------------+---------+------------------+---------------------------------------------------------------------------------------------------------------------------
+ sales_all | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Khabarovsk', 'Vladivostok', 'Moscow', 'Kazan', 'Volgograd')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_all;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(10 rows)
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 5ac6e871f54..026e7a77675 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_merge.sql b/src/test/regress/sql/partition_merge.sql
new file mode 100644
index 00000000000..8bf90fd6212
--- /dev/null
+++ b/src/test/regress/sql/partition_merge.sql
@@ -0,0 +1,434 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb_mar_apr2022;
+SELECT * FROM sales_others;
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_range;
+
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+
+select * from sales_others;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+DROP TABLE sales_date;
+
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+select * from salesmans;
+select * from salesmans01_10;
+select * from salesmans10_40;
+
+DROP TABLE salesmans;
+
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr_all;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+
+
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_all;
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index cfa9d5aaeac..aa3025676fd 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2602,6 +2602,7 @@ SimpleStats
SimpleStringList
SimpleStringListCell
SingleBoundSortItem
+SinglePartitionSpec
Size
SkipPages
SlabBlock
--
2.39.3 (Apple Git-145)
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Add SPLIT PARTITION/MERGE PARTITIONS commands
@ 2024-03-27 20:18 Dmitry Koval <[email protected]>
parent: Alexander Korotkov <[email protected]>
0 siblings, 1 reply; 9+ messages in thread
From: Dmitry Koval @ 2024-03-27 20:18 UTC (permalink / raw)
To: Alexander Korotkov <[email protected]>; +Cc: [email protected]
Hi!
> I've fixed that by skipping a copy of the identity of another
> partition (remove CREATE_TABLE_LIKE_IDENTITY from
> TableLikeClause.options).
Thanks for correction!
Probably I should have looked at the code more closely after commit [1].
I'm also very glad that situation [2] was reproduced.
> When merging partitions you're creating a merged partition like the
> parent table. But when splitting a partition you're creating new
> partitions like the partition being split. What motivates this
> difference?
When splitting a partition, I planned to set parameters for each of the
new partitions (for example, tablespace parameter).
It would make sense if we want to transfer part of the data of splitting
partition to a slower (archive) storage device.
Right now I haven't seen any interest in this functionality, so it
hasn't been implemented yet. But I think this will be needed in the future.
Special thanks for the hint that new structures should be added to the
list src\tools\pgindent\typedefs.list.
Links.
[1]
https://github.com/postgres/postgres/commit/699586315704a8268808e3bdba4cb5924a038c49
[2]
https://www.postgresql.org/message-id/171085360143.2046436.7217841141682511557.pgcf%40coridan.postgr...
--
With best regards,
Dmitry Koval
Postgres Professional: http://postgrespro.com
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Add SPLIT PARTITION/MERGE PARTITIONS commands
@ 2024-03-30 12:40 Alexander Korotkov <[email protected]>
parent: Dmitry Koval <[email protected]>
0 siblings, 2 replies; 9+ messages in thread
From: Alexander Korotkov @ 2024-03-30 12:40 UTC (permalink / raw)
To: Dmitry Koval <[email protected]>; +Cc: [email protected]
Hi, Dmitry!
Thank you for your feedback!
On Wed, Mar 27, 2024 at 10:18 PM Dmitry Koval <[email protected]> wrote:
> > I've fixed that by skipping a copy of the identity of another
> > partition (remove CREATE_TABLE_LIKE_IDENTITY from
> > TableLikeClause.options).
>
> Thanks for correction!
> Probably I should have looked at the code more closely after commit [1].
> I'm also very glad that situation [2] was reproduced.
>
> > When merging partitions you're creating a merged partition like the
> > parent table. But when splitting a partition you're creating new
> > partitions like the partition being split. What motivates this
> > difference?
>
> When splitting a partition, I planned to set parameters for each of the
> new partitions (for example, tablespace parameter).
> It would make sense if we want to transfer part of the data of splitting
> partition to a slower (archive) storage device.
> Right now I haven't seen any interest in this functionality, so it
> hasn't been implemented yet. But I think this will be needed in the future.
OK, I've changed the code to use the parent table as a template for
new partitions in split case. So, now it's the same in both split and
merge cases.
I also added a special note into docs about ACCESS EXCLUSIVE lock,
because I believe that's a significant limitation for usage of this
functionality.
I think 0001, 0002 and 0003 could be considered for pg17. I will
continue reviewing them.
0004 might require more work. I didn't rebase it for now. I suggest
we can rebase it later and consider for pg18.
------
Regards,
Alexander Korotkov
Attachments:
[application/octet-stream] 0001-ALTER-TABLE-MERGE-PARTITIONS-command-v27.patch (105.2K, ../../CAPpHfdsCCV8DOv0Ovu4dTSnuWXiEz_AjuW-J6TPj++tcfEGvRw@mail.gmail.com/2-0001-ALTER-TABLE-MERGE-PARTITIONS-command-v27.patch)
download | inline diff:
From 87f94368ca564486a51b0172a3eb0f5f49180387 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 16:06:03 +0300
Subject: [PATCH 1/3] ALTER TABLE MERGE PARTITIONS command
---
src/backend/commands/tablecmds.c | 349 ++++++++-
src/backend/parser/gram.y | 22 +-
src/backend/parser/parse_utilcmd.c | 89 +++
src/backend/partitioning/partbounds.c | 207 +++++
src/include/nodes/parsenodes.h | 14 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 6 +
.../isolation/expected/partition-merge.out | 199 +++++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-merge.spec | 54 ++
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_merge.out | 736 ++++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_merge.sql | 434 +++++++++++
src/tools/pgindent/typedefs.list | 1 +
15 files changed, 2099 insertions(+), 19 deletions(-)
create mode 100644 src/test/isolation/expected/partition-merge.out
create mode 100644 src/test/isolation/specs/partition-merge.spec
create mode 100644 src/test/regress/expected/partition_merge.out
create mode 100644 src/test/regress/sql/partition_merge.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 6741e721ae3..3541ebebd65 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,8 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context);
/* ----------------------------------------------------------------
* DefineRelation
@@ -4738,6 +4740,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_MergePartitions:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5157,6 +5163,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_MergePartitions:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5554,6 +5565,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_MergePartitions:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecMergePartitions(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -6544,6 +6563,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_MergePartitions:
+ return "MERGE PARTITIONS";
case AT_AddIdentity:
return "ALTER COLUMN ... ADD IDENTITY";
case AT_SetIdentity:
@@ -19038,6 +19059,37 @@ QueuePartitionConstraintValidation(List **wqueue, Relation scanrel,
}
}
+/*
+ * attachPartitionTable: attach new partition to partitioned table
+ *
+ * wqueue: the ALTER TABLE work queue; can be NULL when not running as part
+ * of an ALTER TABLE sequence.
+ * rel: partitioned relation;
+ * attachrel: relation of attached partition;
+ * bound: bounds of attached relation.
+ */
+static void
+attachPartitionTable(List **wqueue, Relation rel, Relation attachrel, PartitionBoundSpec *bound)
+{
+ /* OK to create inheritance. Rest of the checks performed there */
+ CreateInheritance(attachrel, rel, true);
+
+ /* Update the pg_class entry. */
+ StorePartitionBound(attachrel, rel, bound);
+
+ /* Ensure there exists a correct set of indexes in the partition. */
+ AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
+
+ /* and triggers */
+ CloneRowTriggersToPartition(rel, attachrel);
+
+ /*
+ * Clone foreign key constraints. Callee is responsible for setting up
+ * for phase 3 constraint verification.
+ */
+ CloneForeignKeyConstraints(wqueue, rel, attachrel);
+}
+
/*
* ALTER TABLE <name> ATTACH PARTITION <partition-name> FOR VALUES
*
@@ -19240,23 +19292,8 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd,
check_new_partition_bound(RelationGetRelationName(attachrel), rel,
cmd->bound, pstate);
- /* OK to create inheritance. Rest of the checks performed there */
- CreateInheritance(attachrel, rel, true);
-
- /* Update the pg_class entry. */
- StorePartitionBound(attachrel, rel, cmd->bound);
-
- /* Ensure there exists a correct set of indexes in the partition. */
- AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
-
- /* and triggers */
- CloneRowTriggersToPartition(rel, attachrel);
-
- /*
- * Clone foreign key constraints. Callee is responsible for setting up
- * for phase 3 constraint verification.
- */
- CloneForeignKeyConstraints(wqueue, rel, attachrel);
+ /* Attach a new partition to the partitioned table. */
+ attachPartitionTable(wqueue, rel, attachrel, cmd->bound);
/*
* Generate partition constraint from the partition bound specification.
@@ -20810,3 +20847,281 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+
+/*
+ * createPartitionTable: create table for new partition with given name
+ * (newPartName) like table (modelRelName)
+ *
+ * Emulates command: CREATE TABLE <newPartName> (LIKE <modelRelName>
+ * INCLUDING ALL EXCLUDING INDEXES EXCLUDING IDENTITY)
+ */
+static void
+createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
+ AlterTableUtilityContext *context)
+{
+ CreateStmt *createStmt;
+ TableLikeClause *tlc;
+ PlannedStmt *wrapper;
+
+ createStmt = makeNode(CreateStmt);
+ createStmt->relation = newPartName;
+ createStmt->tableElts = NIL;
+ createStmt->inhRelations = NIL;
+ createStmt->constraints = NIL;
+ createStmt->options = NIL;
+ createStmt->oncommit = ONCOMMIT_NOOP;
+ createStmt->tablespacename = NULL;
+ createStmt->if_not_exists = false;
+
+ tlc = makeNode(TableLikeClause);
+ tlc->relation = modelRelName;
+
+ /*
+ * Indexes will be inherited on "attach new partitions" stage, after data
+ * moving.
+ */
+ tlc->options = CREATE_TABLE_LIKE_ALL & ~(CREATE_TABLE_LIKE_INDEXES | CREATE_TABLE_LIKE_IDENTITY);
+ tlc->relationOid = InvalidOid;
+ createStmt->tableElts = lappend(createStmt->tableElts, tlc);
+
+ /* Need to make a wrapper PlannedStmt. */
+ wrapper = makeNode(PlannedStmt);
+ wrapper->commandType = CMD_UTILITY;
+ wrapper->canSetTag = false;
+ wrapper->utilityStmt = (Node *) createStmt;
+ wrapper->stmt_location = context->pstmt->stmt_location;
+ wrapper->stmt_len = context->pstmt->stmt_len;
+
+ ProcessUtility(wrapper,
+ context->queryString,
+ false,
+ PROCESS_UTILITY_SUBCOMMAND,
+ NULL,
+ NULL,
+ None_Receiver,
+ NULL);
+}
+
+/*
+ * moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
+ * of the partitioned table (rel) and move rows into the new partition
+ * (newPartRel).
+ */
+static void
+moveMergedTablesRows(Relation rel, List *mergingPartitionsList,
+ Relation newPartRel)
+{
+ CommandId mycid;
+
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ ListCell *listptr;
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot;
+
+ mycid = GetCurrentCommandId(true);
+
+ /* Prepare a BulkInsertState for table_tuple_insert. */
+ bistate = GetBulkInsertState();
+
+ /* Create necessary tuple slot. */
+ dstslot = MakeSingleTupleTableSlot(RelationGetDescr(newPartRel),
+ table_slot_callbacks(newPartRel));
+ ExecStoreAllNullTuple(dstslot);
+
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+ TupleTableSlot *srcslot;
+ TupleConversionMap *tuple_map;
+ TableScanDesc scan;
+ Snapshot snapshot;
+
+ /* Create tuple slot for new partition. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(mergingPartition),
+ table_slot_callbacks(mergingPartition));
+
+ /*
+ * Map computing for moving attributes of merged partition to new
+ * partition.
+ */
+ tuple_map = convert_tuples_by_name(RelationGetDescr(mergingPartition),
+ RelationGetDescr(newPartRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(mergingPartition, snapshot, 0, NULL);
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ table_tuple_insert(newPartRel, insertslot, mycid, ti_options, bistate);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+ }
+
+ ExecDropSingleTupleTableSlot(dstslot);
+ FreeBulkInsertState(bistate);
+
+ table_finish_bulk_insert(newPartRel, ti_options);
+}
+
+/*
+ * ALTER TABLE <name> MERGE PARTITIONS <partition-list> INTO <partition-name>
+ */
+static void
+ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation newPartRel;
+ ListCell *listptr;
+ List *mergingPartitionsList = NIL;
+ Oid defaultPartOid;
+ char tmpRelName[NAMEDATALEN];
+ RangeVar *mergePartName = cmd->name;
+ bool isSameName = false;
+
+ /*
+ * Lock all merged partitions, check them and create list with partitions
+ * contexts.
+ */
+ foreach(listptr, cmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+ Relation mergingPartition;
+
+ /*
+ * We are going to detach and remove this partition: need to use
+ * exclusive lock for prevent DML-queries to the partition.
+ */
+ mergingPartition = table_openrv(name, AccessExclusiveLock);
+
+ if (mergingPartition->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot merge non-table partition \"%s\"",
+ RelationGetRelationName(mergingPartition))));
+
+ /*
+ * Checking that two partitions have the same name was before, in
+ * function transformPartitionCmdForMerge().
+ */
+ if (equal(name, cmd->name))
+ /* One new partition can have the same name as merged partition. */
+ isSameName = true;
+
+ /* Store a next merging partition into the list. */
+ mergingPartitionsList = lappend(mergingPartitionsList,
+ mergingPartition);
+ }
+
+ /* Detach all merged partitions. */
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(mergingPartition, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, mergingPartition, false, defaultPartOid);
+ }
+
+ /* Create table for new partition, use partitioned table as model. */
+ if (isSameName)
+ {
+ /* Create partition table with generated temparary name. */
+ sprintf(tmpRelName, "merge-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ mergePartName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ tmpRelName, -1);
+ }
+ createPartitionTable(mergePartName,
+ makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1),
+ context);
+
+ /*
+ * Open the new partition and acquire exclusive lock on it. This will
+ * stop all the operations with partitioned table. This might seem
+ * excessive, but this is the way we make sure nobody is planning queries
+ * involving merging partitions.
+ */
+ newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+
+ /* Copy data from merged partitions to new partition. */
+ moveMergedTablesRows(rel, mergingPartitionsList, newPartRel);
+
+ /*
+ * Attach a new partition to the partitioned table. wqueue = NULL:
+ * verification for each cloned constraint is not need.
+ */
+ attachPartitionTable(NULL, rel, newPartRel, cmd->bound);
+
+ /* Unlock and drop merged partitions. */
+ foreach(listptr, mergingPartitionsList)
+ {
+ ObjectAddress object;
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Get relation id before table_close() call. */
+ object.objectId = RelationGetRelid(mergingPartition);
+ object.classId = RelationRelationId;
+ object.objectSubId = 0;
+
+ /* Keep the lock until commit. */
+ table_close(mergingPartition, NoLock);
+
+ performDeletion(&object, DROP_RESTRICT, 0);
+ }
+ list_free(mergingPartitionsList);
+
+ /* Rename new partition if it is needed. */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the new partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ RenameRelationInternal(RelationGetRelid(newPartRel),
+ cmd->name->relname, false, false);
+ }
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+}
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index c1b0cff1c9e..0d9d351b445 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -755,7 +755,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
ORDER ORDINALITY OTHERS OUT_P OUTER_P
OVER OVERLAPS OVERLAY OVERRIDING OWNED OWNER
- PARALLEL PARAMETER PARSER PARTIAL PARTITION PASSING PASSWORD
+ PARALLEL PARAMETER PARSER PARTIAL PARTITION PARTITIONS PASSING PASSWORD
PERIOD PLACING PLANS POLICY
POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
PRIOR PRIVILEGES PROCEDURAL PROCEDURE PROCEDURES PROGRAM PUBLICATION
@@ -2310,6 +2310,7 @@ partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = $4;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -2324,6 +2325,7 @@ partition_cmd:
n->subtype = AT_DetachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = $4;
n->def = (Node *) cmd;
@@ -2337,6 +2339,21 @@ partition_cmd:
n->subtype = AT_DetachPartitionFinalize;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
+ /* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
+ | MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_MergePartitions;
+ cmd->name = $7;
+ cmd->bound = NULL;
+ cmd->partlist = $4;
cmd->concurrent = false;
n->def = (Node *) cmd;
$$ = (Node *) n;
@@ -2353,6 +2370,7 @@ index_partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -17510,6 +17528,7 @@ unreserved_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
@@ -18128,6 +18147,7 @@ bare_label_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index c7efd8d8cee..48a23c7ca42 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -58,6 +58,8 @@
#include "parser/parse_type.h"
#include "parser/parse_utilcmd.h"
#include "parser/parser.h"
+#include "partitioning/partdesc.h"
+#include "partitioning/partbounds.h"
#include "rewrite/rewriteManip.h"
#include "utils/acl.h"
#include "utils/builtins.h"
@@ -3413,6 +3415,80 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForMerge
+ * Analyze the ALTER TABLLE ... MERGE PARTITIONS command
+ *
+ * Does simple checks for merged partitions. Calculates bound of result
+ * partition.
+ */
+static void
+transformPartitionCmdForMerge(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Oid defaultPartOid;
+ Oid partOid;
+ Relation parent = cxt->rel;
+ PartitionKey key;
+ char strategy;
+ ListCell *listptr,
+ *listptr2;
+ bool isDefaultPart = false;
+ List *partOids = NIL;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ if (strategy == PARTITION_STRATEGY_HASH)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be merged")));
+
+ /* Is current partition a DEFAULT partition? */
+ defaultPartOid = get_default_oid_from_partdesc(
+ RelationGetPartitionDesc(parent, true));
+
+ foreach(listptr, partcmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+
+ /* Partitions in the list should have different names. */
+ for_each_cell(listptr2, partcmd->partlist, lnext(partcmd->partlist, listptr))
+ {
+ RangeVar *name2 = (RangeVar *) lfirst(listptr2);
+
+ if (equal(name, name2))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("partition with name \"%s\" already used", name->relname)),
+ parser_errposition(cxt->pstate, name2->location));
+ }
+
+ /* Search DEFAULT partition in the list. */
+ partOid = RangeVarGetRelid(name, NoLock, false);
+ if (partOid == defaultPartOid)
+ isDefaultPart = true;
+ partOids = lappend_oid(partOids, partOid);
+ }
+
+ /* Allocate bound of result partition. */
+ Assert(partcmd->bound == NULL);
+ partcmd->bound = makeNode(PartitionBoundSpec);
+
+ /* Fill partition bound. */
+ partcmd->bound->strategy = strategy;
+ partcmd->bound->location = -1;
+ partcmd->bound->is_default = isDefaultPart;
+ if (!isDefaultPart)
+ calculate_partition_bound_for_merge(parent, partcmd->partlist,
+ partOids, partcmd->bound,
+ cxt->pstate);
+}
+
/*
* transformAlterTableStmt -
* parse analysis for ALTER TABLE
@@ -3683,6 +3759,19 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_MergePartitions:
+ {
+ PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
+
+ if (list_length(partcmd->partlist) < 2)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("list of new partitions should contains at least two items")));
+ transformPartitionCmdForMerge(&cxt, partcmd);
+ newcmds = lappend(newcmds, cmd);
+ break;
+ }
+
default:
/*
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index c28639d2e3f..9ed80d721ed 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -4977,3 +4977,210 @@ satisfies_hash_partition(PG_FUNCTION_ARGS)
PG_RETURN_BOOL(rowHash % modulus == remainder);
}
+
+/*
+ * check_two_partitions_bounds_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * This is a helper function for check_partitions_for_split() and
+ * calculate_partition_bound_for_merge().
+ * This function compares upper bound of first_bound and lower bound of
+ * second_bound. These bounds should be equals except case
+ * "defaultPart == true" (this means that one of split partitions is DEFAULT).
+ * In this case upper bound of first_bound can be less than lower bound of
+ * second_bound because space between of these bounds will be included in
+ * DEFAULT partition.
+ *
+ * parent: partitioned table
+ * first_name: name of first partition
+ * first_bound: bound of first partition
+ * second_name: name of second partition
+ * second_bound: bound of second partition
+ * defaultPart: true if one of split partitions is DEFAULT
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_two_partitions_bounds_range(Relation parent,
+ RangeVar *first_name,
+ PartitionBoundSpec *first_bound,
+ RangeVar *second_name,
+ PartitionBoundSpec *second_bound,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *first_upper;
+ PartitionRangeBound *second_lower;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+
+ first_upper = make_one_partition_rbound(key, -1, first_bound->upperdatums, false);
+ second_lower = make_one_partition_rbound(key, -1, second_bound->lowerdatums, true);
+
+ /*
+ * lower1=false (the second to last argument) for correct comparison lower
+ * and upper bounds.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ second_lower->datums, second_lower->kind,
+ false, first_upper);
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ {
+ PartitionRangeDatum *datum = linitial(second_bound->lowerdatums);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("lower bound of partition \"%s\" conflicts with upper bound of previous partition \"%s\"",
+ second_name->relname, first_name->relname),
+ parser_errposition(pstate, datum->location)));
+ }
+}
+
+/*
+ * get_partition_bound_spec
+ *
+ * Returns description of partition with Oid "partOid" and name "name".
+ */
+static PartitionBoundSpec *
+get_partition_bound_spec(Oid partOid, RangeVar *name)
+{
+ HeapTuple tuple;
+ Datum datum;
+ bool isnull;
+ PartitionBoundSpec *boundspec = NULL;
+
+ /* Try fetching the tuple from the catcache, for speed. */
+ tuple = SearchSysCache1(RELOID, partOid);
+ if (!HeapTupleIsValid(tuple))
+ elog(ERROR, "cache lookup failed for relation \"%s\"",
+ name->relname);
+
+ datum = SysCacheGetAttr(RELOID, tuple,
+ Anum_pg_class_relpartbound,
+ &isnull);
+ if (isnull)
+ elog(ERROR, "partition bound for relation \"%s\" is null",
+ name->relname);
+
+ boundspec = stringToNode(TextDatumGetCString(datum));
+
+ if (!IsA(boundspec, PartitionBoundSpec))
+ elog(ERROR, "expected PartitionBoundSpec for relation \"%s\"",
+ name->relname);
+
+ ReleaseSysCache(tuple);
+ return boundspec;
+}
+
+/*
+ * calculate_partition_bound_for_merge
+ *
+ * Calculates the bound of merged partition "spec" by using the bounds of
+ * partitions to be merged.
+ *
+ * parent: partitioned table
+ * partNames: names of partitions to be merged
+ * partOids: Oids of partitions to be merged
+ * spec (out): bounds specification of the merged partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionBoundSpec *bound;
+
+ Assert(!spec->is_default);
+
+ switch (key->strategy)
+ {
+ case PARTITION_STRATEGY_RANGE:
+ {
+ int i;
+ PartitionRangeBound **lower_bounds;
+ int nparts = list_length(partOids);
+ List *bounds = NIL;
+
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /*
+ * Create array of lower bounds and list of
+ * PartitionBoundSpec.
+ */
+ for (i = 0; i < nparts; i++)
+ {
+ bound = get_partition_bound_spec(list_nth_oid(partOids, i),
+ (RangeVar *) list_nth(partNames, i));
+
+ lower_bounds[i] = make_one_partition_rbound(key, i, bound->lowerdatums, true);
+ bounds = lappend(bounds, bound);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Ranges of partitions should not overlap. */
+ for (i = 1; i < nparts; i++)
+ {
+ int index = lower_bounds[i]->index;
+ int prev_index = lower_bounds[i - 1]->index;
+
+ check_two_partitions_bounds_range(parent,
+ (RangeVar *) list_nth(partNames, prev_index),
+ (PartitionBoundSpec *) list_nth(bounds, prev_index),
+ (RangeVar *) list_nth(partNames, index),
+ (PartitionBoundSpec *) list_nth(bounds, index),
+ false, pstate);
+ }
+
+ /*
+ * Lower bound of first partition is a lower bound of merged
+ * partition.
+ */
+ spec->lowerdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[0]->index))->lowerdatums;
+
+ /*
+ * Upper bound of last partition is a upper bound of merged
+ * partition.
+ */
+ spec->upperdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[nparts - 1]->index))->upperdatums;
+
+ pfree(lower_bounds);
+ list_free(bounds);
+ break;
+ }
+
+ case PARTITION_STRATEGY_LIST:
+ {
+ ListCell *listptr,
+ *listptr2;
+
+ /* Consolidate bounds for all partitions in the list. */
+ forboth(listptr, partOids, listptr2, partNames)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr2);
+ Oid curOid = lfirst_oid(listptr);
+
+ bound = get_partition_bound_spec(curOid, name);
+ spec->listdatums = list_concat(spec->listdatums, bound->listdatums);
+ }
+ break;
+ }
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ }
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index b89baef95d3..27c28139c84 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -933,6 +933,17 @@ typedef struct PartitionRangeDatum
ParseLoc location; /* token location, or -1 if unknown */
} PartitionRangeDatum;
+/*
+ * PartitionDesc - info about single partition for ALTER TABLE SPLIT PARTITION command
+ */
+typedef struct SinglePartitionSpec
+{
+ NodeTag type;
+
+ RangeVar *name; /* name of partition */
+ PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+} SinglePartitionSpec;
+
/*
* PartitionCmd - info for ALTER TABLE/INDEX ATTACH/DETACH PARTITION commands
*/
@@ -941,6 +952,8 @@ typedef struct PartitionCmd
NodeTag type;
RangeVar *name; /* name of partition to attach/detach */
PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+ List *partlist; /* list of partitions, for SPLIT PARTITION
+ * command */
bool concurrent;
} PartitionCmd;
@@ -2331,6 +2344,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
AT_DropIdentity, /* DROP IDENTITY */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 57514d064b7..e2b4700d97b 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -333,6 +333,7 @@ PG_KEYWORD("parameter", PARAMETER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("parser", PARSER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partial", PARTIAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partition", PARTITION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("partitions", PARTITIONS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("passing", PASSING, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("password", PASSWORD, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("period", PERIOD, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 3d9cc1031f7..0329d7bd848 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,4 +143,10 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate);
+
#endif /* PARTBOUNDS_H */
diff --git a/src/test/isolation/expected/partition-merge.out b/src/test/isolation/expected/partition-merge.out
new file mode 100644
index 00000000000..98446aaab5a
--- /dev/null
+++ b/src/test/isolation/expected/partition-merge.out
@@ -0,0 +1,199 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 188fc04f85e..8bcaa8a6254 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -103,6 +103,7 @@ test: partition-key-update-1
test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
+test: partition-merge
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-merge.spec b/src/test/isolation/specs/partition-merge.spec
new file mode 100644
index 00000000000..ec48732c583
--- /dev/null
+++ b/src/test/isolation/specs/partition-merge.spec
@@ -0,0 +1,54 @@
+# Verify that MERGE operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1merg { ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20; }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2u { UPDATE tpart SET t = 'text01modif' where i = 1; }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s2 inserts row into table. s1 starts MERGE PARTITIONS then
+# s2 trying to update inserted row and waits until s1 finished
+# MERGE operation.
+
+permutation s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 48563b2cf01..69920757b21 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_MergePartitions:
+ strtype = "MERGE PARTITIONS";
+ break;
case AT_AddIdentity:
strtype = "ADD IDENTITY";
break;
diff --git a/src/test/regress/expected/partition_merge.out b/src/test/regress/expected/partition_merge.out
new file mode 100644
index 00000000000..013ab659618
--- /dev/null
+++ b/src/test/regress/expected/partition_merge.out
@@ -0,0 +1,736 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+ERROR: partition with name "sales_feb2022" already used
+LINE 1: ...e MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2...
+ ^
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+ERROR: cannot merge non-table partition "sales_apr2022"
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_jan2022"
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+ERROR: lower bound of partition "sales_jan2022" conflicts with upper bound of previous partition "sales_dec2021"
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | p | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_dec2021 | r | f | FOR VALUES FROM ('12-01-2021') TO ('12-31-2021')
+ sales_jan_feb_mar2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+ pg_get_partkeydef
+--------------------
+ RANGE (sales_date)
+(1 row)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_mar2022 | r | f | FOR VALUES FROM ('03-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_feb_mar_apr2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('05-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+-------------------------+-----------------------+--------------------------------------+------------+-----------------------------------------------------------------------------------------------------------------------------
+ partitions_merge_schema | sales_feb_mar_apr2022 | sales_feb_mar_apr2022_sales_date_idx | | CREATE INDEX sales_feb_mar_apr2022_sales_date_idx ON partitions_merge_schema.sales_feb_mar_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb_mar_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(10 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(10 rows)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_range;
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+select * from sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(7 rows)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+(2 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(2 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(6 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+DROP TABLE sales_date;
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+select * from salesmans;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(6 rows)
+
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(5 rows)
+
+DROP TABLE salesmans;
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr_all;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+ERROR: partition bound for relation "sales_external" is null
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+ERROR: partition bound for relation "sales_external2" is null
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------------
+ sales_central | r | f | FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd')
+ sales_east | r | f | FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_west | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+--------------+---------+------------------+---------------------------------------------------------------------------------------------------------------------------
+ sales_all | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Khabarovsk', 'Vladivostok', 'Moscow', 'Kazan', 'Volgograd')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_all;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(10 rows)
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 5ac6e871f54..026e7a77675 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_merge.sql b/src/test/regress/sql/partition_merge.sql
new file mode 100644
index 00000000000..8bf90fd6212
--- /dev/null
+++ b/src/test/regress/sql/partition_merge.sql
@@ -0,0 +1,434 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb_mar_apr2022;
+SELECT * FROM sales_others;
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_range;
+
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+
+select * from sales_others;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+DROP TABLE sales_date;
+
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+select * from salesmans;
+select * from salesmans01_10;
+select * from salesmans10_40;
+
+DROP TABLE salesmans;
+
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr_all;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+
+
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_all;
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index cfa9d5aaeac..aa3025676fd 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2602,6 +2602,7 @@ SimpleStats
SimpleStringList
SimpleStringListCell
SingleBoundSortItem
+SinglePartitionSpec
Size
SkipPages
SlabBlock
--
2.39.3 (Apple Git-145)
[application/octet-stream] 0002-ALTER-TABLE-SPLIT-PARTITION-command-v27.patch (176.1K, ../../CAPpHfdsCCV8DOv0Ovu4dTSnuWXiEz_AjuW-J6TPj++tcfEGvRw@mail.gmail.com/3-0002-ALTER-TABLE-SPLIT-PARTITION-command-v27.patch)
download | inline diff:
From 8e5ffacede40a549071a3ae177465c0ac4d607e6 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 17:58:52 +0300
Subject: [PATCH 2/3] ALTER TABLE SPLIT PARTITION command
---
src/backend/commands/tablecmds.c | 406 +++++
src/backend/parser/gram.y | 38 +-
src/backend/parser/parse_utilcmd.c | 62 +-
src/backend/partitioning/partbounds.c | 657 ++++++++
src/backend/utils/adt/ruleutils.c | 18 +
src/include/nodes/parsenodes.h | 1 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 5 +
src/include/utils/ruleutils.h | 2 +
.../isolation/expected/partition-split.out | 190 +++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-split.spec | 54 +
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_split.out | 1417 +++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_split.sql | 833 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
17 files changed, 3679 insertions(+), 12 deletions(-)
create mode 100644 src/test/isolation/expected/partition-split.out
create mode 100644 src/test/isolation/specs/partition-split.spec
create mode 100644 src/test/regress/expected/partition_split.out
create mode 100644 src/test/regress/sql/partition_split.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 3541ebebd65..506db7f5a1d 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,9 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab,
+ Relation rel, PartitionCmd *cmd,
+ AlterTableUtilityContext *context);
static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
PartitionCmd *cmd, AlterTableUtilityContext *context);
@@ -4740,6 +4743,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_SplitPartition:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
case AT_MergePartitions:
cmd_lockmode = AccessExclusiveLock;
break;
@@ -5163,6 +5170,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_SplitPartition:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
case AT_MergePartitions:
ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
/* No command-specific prep needed */
@@ -5565,6 +5577,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_SplitPartition:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecSplitPartition(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
case AT_MergePartitions:
cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
cur_pass, context);
@@ -6563,6 +6583,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_SplitPartition:
+ return "SPLIT PARTITION";
case AT_MergePartitions:
return "MERGE PARTITIONS";
case AT_AddIdentity:
@@ -20848,6 +20870,255 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+/*
+ * Struct with context of new partition for insert rows from splited partition
+ */
+typedef struct SplitPartitionContext
+{
+ ExprState *partqualstate; /* expression for check slot for partition
+ * (NULL for DEFAULT partition) */
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot; /* slot for insert row into partition */
+ Relation partRel; /* relation for partition */
+} SplitPartitionContext;
+
+
+/*
+ * createSplitPartitionContext: create context for partition and fill it
+ */
+static SplitPartitionContext *
+createSplitPartitionContext(Relation partRel)
+{
+ SplitPartitionContext *pc;
+
+ pc = (SplitPartitionContext *) palloc0(sizeof(SplitPartitionContext));
+ pc->partRel = partRel;
+
+ /*
+ * Prepare a BulkInsertState for table_tuple_insert. The FSM is empty, so
+ * don't bother using it.
+ */
+ pc->bistate = GetBulkInsertState();
+
+ /* Create tuple slot for new partition. */
+ pc->dstslot = MakeSingleTupleTableSlot(RelationGetDescr(pc->partRel),
+ table_slot_callbacks(pc->partRel));
+ ExecStoreAllNullTuple(pc->dstslot);
+
+ return pc;
+}
+
+/*
+ * deleteSplitPartitionContext: delete context for partition
+ */
+static void
+deleteSplitPartitionContext(SplitPartitionContext *pc, int ti_options)
+{
+ ExecDropSingleTupleTableSlot(pc->dstslot);
+ FreeBulkInsertState(pc->bistate);
+
+ table_finish_bulk_insert(pc->partRel, ti_options);
+
+ pfree(pc);
+}
+
+/*
+ * moveSplitTableRows: scan split partition (splitRel) of partitioned table
+ * (rel) and move rows into new partitions.
+ *
+ * New partitions description:
+ * partlist: list of pointers to SinglePartitionSpec structures.
+ * newPartRels: list of Relation's.
+ * defaultPartOid: oid of DEFAULT partition, for table rel.
+ */
+static void
+moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPartRels, Oid defaultPartOid)
+{
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ CommandId mycid;
+ EState *estate;
+ ListCell *listptr,
+ *listptr2;
+ TupleTableSlot *srcslot;
+ ExprContext *econtext;
+ TableScanDesc scan;
+ Snapshot snapshot;
+ MemoryContext oldCxt;
+ List *partContexts = NIL;
+ TupleConversionMap *tuple_map;
+ SplitPartitionContext *defaultPartCtx = NULL,
+ *pc;
+ bool isOldDefaultPart = false;
+
+ mycid = GetCurrentCommandId(true);
+
+ estate = CreateExecutorState();
+
+ forboth(listptr, partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ pc = createSplitPartitionContext((Relation) lfirst(listptr2));
+
+ if (sps->bound->is_default)
+ {
+ /* We should not create constraint for detached DEFAULT partition. */
+ defaultPartCtx = pc;
+ }
+ else
+ {
+ List *partConstraint;
+
+ /* Build expression execution states for partition check quals. */
+ partConstraint = get_qual_from_partbound(rel, sps->bound);
+ partConstraint =
+ (List *) eval_const_expressions(NULL,
+ (Node *) partConstraint);
+ /* Make boolean expression for ExecCheck(). */
+ partConstraint = list_make1(make_ands_explicit(partConstraint));
+
+ /*
+ * Map the vars in the constraint expression from rel's attnos to
+ * splitRel's.
+ */
+ partConstraint = map_partition_varattnos(partConstraint,
+ 1, splitRel, rel);
+
+ pc->partqualstate =
+ ExecPrepareExpr((Expr *) linitial(partConstraint), estate);
+ Assert(pc->partqualstate != NULL);
+ }
+
+ /* Store partition context into list. */
+ partContexts = lappend(partContexts, pc);
+ }
+
+ /*
+ * Create partition context for DEFAULT partition. We can insert values
+ * into this partition in case spaces with values between new partitions.
+ */
+ if (!defaultPartCtx && OidIsValid(defaultPartOid))
+ {
+ /* Indicate that we allocate context for old DEFAULT partition */
+ isOldDefaultPart = true;
+ defaultPartCtx = createSplitPartitionContext(table_open(defaultPartOid, AccessExclusiveLock));
+ }
+
+ econtext = GetPerTupleExprContext(estate);
+
+ /* Create necessary tuple slot. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(splitRel),
+ table_slot_callbacks(splitRel));
+
+ /*
+ * Map computing for moving attributes of split partition to new partition
+ * (for first new partition but other new partitions can use the same
+ * map).
+ */
+ pc = (SplitPartitionContext *) lfirst(list_head(partContexts));
+ tuple_map = convert_tuples_by_name(RelationGetDescr(splitRel),
+ RelationGetDescr(pc->partRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(splitRel, snapshot, 0, NULL);
+
+ /*
+ * Switch to per-tuple memory context and reset it for each tuple
+ * produced, so we don't leak memory.
+ */
+ oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(estate));
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ bool found = false;
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ econtext->ecxt_scantuple = srcslot;
+
+ /* Search partition for current slot srcslot. */
+ foreach(listptr, partContexts)
+ {
+ pc = (SplitPartitionContext *) lfirst(listptr);
+
+ if (pc->partqualstate /* skip DEFAULT partition */ &&
+ ExecCheck(pc->partqualstate, econtext))
+ {
+ found = true;
+ break;
+ }
+ ResetExprContext(econtext);
+ }
+ if (!found)
+ {
+ /* Use DEFAULT partition if it exists. */
+ if (defaultPartCtx)
+ pc = defaultPartCtx;
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_CHECK_VIOLATION),
+ errmsg("can not find partition for split partition row"),
+ errtable(splitRel)));
+ }
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, pc->dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = pc->dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ table_tuple_insert(pc->partRel, insertslot, mycid, ti_options, pc->bistate);
+
+ ResetExprContext(econtext);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ MemoryContextSwitchTo(oldCxt);
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+
+ FreeExecutorState(estate);
+
+ foreach(listptr, partContexts)
+ deleteSplitPartitionContext((SplitPartitionContext *) lfirst(listptr), ti_options);
+
+ /* Need to close table and free buffers for DEFAULT partition. */
+ if (isOldDefaultPart)
+ {
+ Relation defaultPartRel = defaultPartCtx->partRel;
+
+ deleteSplitPartitionContext(defaultPartCtx, ti_options);
+ /* Keep the lock until commit. */
+ table_close(defaultPartRel, NoLock);
+ }
+}
+
/*
* createPartitionTable: create table for new partition with given name
* (newPartName) like table (modelRelName)
@@ -20902,6 +21173,141 @@ createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
NULL);
}
+/*
+ * ALTER TABLE <name> SPLIT PARTITION <partition-name> INTO <partition-list>
+ */
+static void
+ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation splitRel;
+ Oid splitRelOid;
+ char relname[NAMEDATALEN];
+ Oid namespaceId;
+ ListCell *listptr,
+ *listptr2;
+ bool isSameName = false;
+ char tmpRelName[NAMEDATALEN];
+ List *newPartRels = NIL;
+ ObjectAddress object;
+ RangeVar *parentName;
+ Oid defaultPartOid;
+
+ defaultPartOid = get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+
+ /*
+ * We are going to detach and remove this partition: need to use exclusive
+ * lock for prevent DML-queries to the partition.
+ */
+ splitRel = table_openrv(cmd->name, AccessExclusiveLock);
+
+ if (splitRel->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot split non-table partition \"%s\"",
+ RelationGetRelationName(splitRel))));
+
+ splitRelOid = RelationGetRelid(splitRel);
+
+ /* Check descriptions of new partitions. */
+ foreach(listptr, cmd->partlist)
+ {
+ Oid existing_relid;
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ strlcpy(relname, sps->name->relname, NAMEDATALEN);
+
+ /*
+ * Look up the namespace in which we are supposed to create the
+ * partition, check we have permission to create there, lock it
+ * against concurrent drop, and mark stmt->relation as
+ * RELPERSISTENCE_TEMP if a temporary namespace is selected.
+ */
+ namespaceId =
+ RangeVarGetAndCheckCreationNamespace(sps->name, NoLock, NULL);
+
+ /*
+ * This would fail later on anyway, if the relation already exists.
+ * But by catching it here we can emit a nicer error message.
+ */
+ existing_relid = get_relname_relid(relname, namespaceId);
+ if (existing_relid == splitRelOid && !isSameName)
+ /* One new partition can have the same name as split partition. */
+ isSameName = true;
+ else if (existing_relid != InvalidOid)
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("relation \"%s\" already exists", relname)));
+ }
+
+ /* Detach split partition. */
+ RemoveInheritance(splitRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, splitRel, false, defaultPartOid);
+
+ /*
+ * If new partition has the same name as split partition then we should
+ * rename split partition for reuse name.
+ */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ sprintf(tmpRelName, "split-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ RenameRelationInternal(splitRelOid, tmpRelName, false, false);
+
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible after rename.
+ */
+ CommandCounterIncrement();
+ }
+
+ /* Create new partitions (like split partition), without indexes. */
+ parentName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1);
+ foreach(listptr, cmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel;
+
+ createPartitionTable(sps->name, parentName, context);
+
+ /* Open the new partition and acquire exclusive lock on it. */
+ newPartRel = table_openrv(sps->name, AccessExclusiveLock);
+
+ newPartRels = lappend(newPartRels, newPartRel);
+ }
+
+ /* Copy data from split partition to new partitions. */
+ moveSplitTableRows(rel, splitRel, cmd->partlist, newPartRels, defaultPartOid);
+ /* Keep the lock until commit. */
+ table_close(splitRel, NoLock);
+
+ /* Attach new partitions to partitioned table. */
+ forboth(listptr, cmd->partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel = (Relation) lfirst(listptr2);
+
+ /* wqueue = NULL: verification for each cloned constraint is not need. */
+ attachPartitionTable(NULL, rel, newPartRel, sps->bound);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+ }
+
+ /* Drop split partition. */
+ object.classId = RelationRelationId;
+ object.objectId = splitRelOid;
+ object.objectSubId = 0;
+ /* Probably DROP_CASCADE is not needed. */
+ performDeletion(&object, DROP_RESTRICT, 0);
+}
+
/*
* moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
* of the partitioned table (rel) and move rows into the new partition
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 0d9d351b445..16d766786b5 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -270,6 +270,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
PartitionElem *partelem;
PartitionSpec *partspec;
PartitionBoundSpec *partboundspec;
+ SinglePartitionSpec *singlepartspec;
RoleSpec *rolespec;
PublicationObjSpec *publicationobjectspec;
struct SelectLimit *selectlimit;
@@ -645,6 +646,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
%type <partelem> part_elem
%type <list> part_params
%type <partboundspec> PartitionBoundSpec
+%type <singlepartspec> SinglePartitionSpec
+%type <list> partitions_list
%type <list> hash_partbound
%type <defelt> hash_partbound_elem
@@ -770,7 +773,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
SAVEPOINT SCALAR SCHEMA SCHEMAS SCROLL SEARCH SECOND_P SECURITY SELECT
SEQUENCE SEQUENCES
SERIALIZABLE SERVER SESSION SESSION_USER SET SETS SETOF SHARE SHOW
- SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SQL_P STABLE STANDALONE_P
+ SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SPLIT SQL_P STABLE STANDALONE_P
START STATEMENT STATISTICS STDIN STDOUT STORAGE STORED STRICT_P STRING_P STRIP_P
SUBSCRIPTION SUBSTRING SUPPORT SYMMETRIC SYSID SYSTEM_P SYSTEM_USER
@@ -2300,6 +2303,23 @@ alter_table_cmds:
| alter_table_cmds ',' alter_table_cmd { $$ = lappend($1, $3); }
;
+partitions_list:
+ SinglePartitionSpec { $$ = list_make1($1); }
+ | partitions_list ',' SinglePartitionSpec { $$ = lappend($1, $3); }
+ ;
+
+SinglePartitionSpec:
+ PARTITION qualified_name PartitionBoundSpec
+ {
+ SinglePartitionSpec *n = makeNode(SinglePartitionSpec);
+
+ n->name = $2;
+ n->bound = $3;
+
+ $$ = n;
+ }
+ ;
+
partition_cmd:
/* ALTER TABLE <name> ATTACH PARTITION <table_name> FOR VALUES */
ATTACH PARTITION qualified_name PartitionBoundSpec
@@ -2344,6 +2364,20 @@ partition_cmd:
n->def = (Node *) cmd;
$$ = (Node *) n;
}
+ /* ALTER TABLE <name> SPLIT PARTITION <partition_name> INTO () */
+ | SPLIT PARTITION qualified_name INTO '(' partitions_list ')'
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_SplitPartition;
+ cmd->name = $3;
+ cmd->bound = NULL;
+ cmd->partlist = $6;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
/* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
| MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
{
@@ -17595,6 +17629,7 @@ unreserved_keyword:
| SIMPLE
| SKIP
| SNAPSHOT
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
@@ -18226,6 +18261,7 @@ bare_label_keyword:
| SMALLINT
| SNAPSHOT
| SOME
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index 48a23c7ca42..88a4a41186a 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -136,7 +136,7 @@ static void transformConstraintAttrs(CreateStmtContext *cxt,
List *constraintList);
static void transformColumnType(CreateStmtContext *cxt, ColumnDef *column);
static void setSchemaName(const char *context_schema, char **stmt_schema_name);
-static void transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd);
+static void transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound);
static List *transformPartitionRangeBounds(ParseState *pstate, List *blist,
Relation parent);
static void validateInfiniteBounds(ParseState *pstate, List *blist);
@@ -3415,6 +3415,43 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForSplit
+ * Analyze the ALTER TABLLE ... SPLIT PARTITION command
+ *
+ * For each new partition sps->bound is set to the transformed value of bound.
+ * Does checks for bounds of new partitions.
+ */
+static void
+transformPartitionCmdForSplit(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Relation parent = cxt->rel;
+ Oid splitPartOid;
+ ListCell *listptr;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ /* Transform partition bounds for all partitions in the list: */
+ foreach(listptr, partcmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ cxt->partbound = NULL;
+ transformPartitionCmd(cxt, sps->bound);
+ /* Assign transformed value of the partition bound. */
+ sps->bound = cxt->partbound;
+ }
+
+ splitPartOid = RangeVarGetRelid(partcmd->name, NoLock, false);
+
+ /* Then we should check partitions with transformed bounds. */
+ check_partitions_for_split(parent, splitPartOid, partcmd->name, partcmd->partlist, cxt->pstate);
+}
+
+
/*
* transformPartitionCmdForMerge
* Analyze the ALTER TABLLE ... MERGE PARTITIONS command
@@ -3751,7 +3788,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
- transformPartitionCmd(&cxt, partcmd);
+ transformPartitionCmd(&cxt, partcmd->bound);
/* assign transformed value of the partition bound */
partcmd->bound = cxt.partbound;
}
@@ -3759,6 +3796,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_SplitPartition:
case AT_MergePartitions:
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
@@ -3767,7 +3805,11 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("list of new partitions should contains at least two items")));
- transformPartitionCmdForMerge(&cxt, partcmd);
+
+ if (cmd->subtype == AT_SplitPartition)
+ transformPartitionCmdForSplit(&cxt, partcmd);
+ else
+ transformPartitionCmdForMerge(&cxt, partcmd);
newcmds = lappend(newcmds, cmd);
break;
}
@@ -4172,13 +4214,13 @@ setSchemaName(const char *context_schema, char **stmt_schema_name)
/*
* transformPartitionCmd
- * Analyze the ATTACH/DETACH PARTITION command
+ * Analyze the ATTACH/DETACH/SPLIT PARTITION command
*
- * In case of the ATTACH PARTITION command, cxt->partbound is set to the
- * transformed value of cmd->bound.
+ * In case of the ATTACH/SPLIT PARTITION command, cxt->partbound is set to the
+ * transformed value of bound.
*/
static void
-transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
+transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound)
{
Relation parentRel = cxt->rel;
@@ -4187,9 +4229,9 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
case RELKIND_PARTITIONED_TABLE:
/* transform the partition bound, if any */
Assert(RelationGetPartitionKey(parentRel) != NULL);
- if (cmd->bound != NULL)
+ if (bound != NULL)
cxt->partbound = transformPartitionBound(cxt->pstate, parentRel,
- cmd->bound);
+ bound);
break;
case RELKIND_PARTITIONED_INDEX:
@@ -4197,7 +4239,7 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
* A partitioned index cannot have a partition bound set. ALTER
* INDEX prevents that with its grammar, but not ALTER TABLE.
*/
- if (cmd->bound != NULL)
+ if (bound != NULL)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("\"%s\" is not a partitioned table",
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index 9ed80d721ed..c36e26ba4bd 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -5040,10 +5040,69 @@ check_two_partitions_bounds_range(Relation parent,
}
}
+/*
+ * check_partitions_not_overlap_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * This is a helper function for check_partitions_for_split().
+ * Checks that the values of the new partitions do not overlap.
+ *
+ * parent: partitioned table
+ * parts: array of SinglePartitionSpec structs with info about split partitions
+ * nparts: size of array "parts"
+ */
+static void
+check_partitions_not_overlap_list(Relation parent,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key PG_USED_FOR_ASSERTS_ONLY = RelationGetPartitionKey(parent);
+ int overlap_location = -1;
+ int i,
+ j;
+ SinglePartitionSpec *sps1,
+ *sps2;
+ List *overlap;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ for (i = 0; i < nparts; i++)
+ {
+ sps1 = parts[i];
+
+ for (j = i + 1; j < nparts; j++)
+ {
+ sps2 = parts[j];
+
+ /*
+ * Calculate intersection between values of two partitions.
+ */
+ overlap = list_intersection(sps1->bound->listdatums,
+ sps2->bound->listdatums);
+ if (list_length(overlap) > 0)
+ {
+ Const *val = (Const *) lfirst(list_head(overlap));
+
+ overlap_location = val->location;
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another new partition \"%s\"",
+ sps1->name->relname, sps2->name->relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ }
+ }
+}
+
/*
* get_partition_bound_spec
*
* Returns description of partition with Oid "partOid" and name "name".
+ *
+ * partOid: partition Oid
+ * name: partition name
*/
static PartitionBoundSpec *
get_partition_bound_spec(Oid partOid, RangeVar *name)
@@ -5076,6 +5135,604 @@ get_partition_bound_spec(Oid partOid, RangeVar *name)
return boundspec;
}
+/*
+ * check_partition_bounds_for_split_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * Checks that bounds of new partition "spec" is inside bounds of split
+ * partition (with Oid splitPartOid). If first=true (this means that "spec" is
+ * the first of new partitions) then lower bound of "spec" should be equal (or
+ * greater than or equal in case defaultPart=true) to lower bound of split
+ * partition. If last=true (this means that "spec" is the last of new
+ * partitions) then upper bound of of "spec" should be equal (or less than or
+ * equal in case defaultPart=true) to upper bound of split partition.
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * first: true in case new partition "spec" is first of new partitions
+ * last: true in case new partition "spec" is last of new partitions
+ * defaultPart: true in case partitioned table has DEFAULT partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_range(Relation parent,
+ char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ bool first,
+ bool last,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *lower,
+ *upper;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+ Assert(spec->strategy == PARTITION_STRATEGY_RANGE);
+
+ lower = make_one_partition_rbound(key, -1, spec->lowerdatums, true);
+ upper = make_one_partition_rbound(key, -1, spec->upperdatums, false);
+
+ /*
+ * First check if the resulting range would be empty with specified lower
+ * and upper bounds. partition_rbound_cmp cannot return zero here, since
+ * the lower-bound flags are different.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, upper);
+ Assert(cmpval != 0);
+ if (cmpval > 0)
+ {
+ /* Point to problematic key in the lower datums list. */
+ PartitionRangeDatum *datum = list_nth(spec->lowerdatums, cmpval - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("empty range bound specified for partition \"%s\"",
+ relname),
+ errdetail("Specified lower bound %s is greater than or equal to upper bound %s.",
+ get_range_partbound_string(spec->lowerdatums),
+ get_range_partbound_string(spec->upperdatums)),
+ parser_errposition(pstate, datum->location)));
+ }
+
+ /* Need to check first and last partitions (from set of new partitions) */
+ if (first || last)
+ {
+ PartitionBoundSpec *split_spec = get_partition_bound_spec(splitPartOid, splitPartName);
+ bool overlap = false;
+
+ if (first)
+ {
+ PartitionRangeBound *split_lower;
+
+ split_lower = make_one_partition_rbound(key, -1, split_spec->lowerdatums, true);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, split_lower);
+
+ /*
+ * Lower bound of "spec" should be equal (or greater than or equal
+ * in case defaultPart=true) to lower bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ overlap = true;
+ }
+ else
+ {
+ PartitionRangeBound *split_upper;
+
+ split_upper = make_one_partition_rbound(key, -1, split_spec->upperdatums, false);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ upper->datums, upper->kind,
+ false, split_upper);
+
+ /*
+ * Upper bound of of "spec" should be equal (or less than or equal
+ * in case defaultPart=true) to upper bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval > 0))
+ overlap = true;
+ }
+
+ if (overlap)
+ {
+ PartitionRangeDatum *datum;
+
+ datum = list_nth(first ? spec->lowerdatums : spec->upperdatums, abs(cmpval) - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("%s bound of partition \"%s\" is %s %s bound of split partition",
+ first ? "lower" : "upper",
+ relname,
+ defaultPart ? (first ? "less than" : "greater than") : "not equals to",
+ first ? "lower" : "upper"),
+ parser_errposition(pstate, datum->location)));
+ }
+ }
+}
+
+/*
+ * check_partition_bounds_for_split_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that bounds of new partition is inside bounds of split partition
+ * (with Oid splitPartOid).
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_list(Relation parent, char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int with = -1;
+ bool overlap = false;
+ int overlap_location = -1;
+ ListCell *cell;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+ Assert(spec->strategy == PARTITION_STRATEGY_LIST);
+ Assert(boundinfo && boundinfo->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Search each value of new partition "spec" in existing partitions. All
+ * of them should be in split partition (with Oid splitPartOid).
+ */
+ foreach(cell, spec->listdatums)
+ {
+ Const *val = lfirst_node(Const, cell);
+
+ overlap_location = val->location;
+ if (!val->constisnull)
+ {
+ int offset;
+ bool equal;
+
+ offset = partition_list_bsearch(&key->partsupfunc[0],
+ key->partcollation,
+ boundinfo,
+ val->constvalue,
+ &equal);
+ if (offset >= 0 && equal)
+ {
+ with = boundinfo->indexes[offset];
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have this value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ else if (partition_bound_accepts_nulls(boundinfo))
+ {
+ with = boundinfo->null_index;
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have NULL value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+
+ if (overlap)
+ {
+ Assert(with >= 0);
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another (not split) partition \"%s\"",
+ relname, get_rel_name(partdesc->oids[with])),
+ parser_errposition(pstate, overlap_location)));
+ }
+}
+
+/*
+ * find_value_in_new_partitions_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Function returns true in case any of new partitions contains value "value".
+ *
+ * partsupfunc: information about comparison function associated with the partition key
+ * partcollation: partitioning collation
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * value: the value that we are looking for
+ * isnull: true if the value that we are looking for is NULL
+ */
+static bool
+find_value_in_new_partitions_list(FmgrInfo *partsupfunc,
+ Oid *partcollation,
+ SinglePartitionSpec **parts,
+ int nparts,
+ Datum value,
+ bool isnull)
+{
+ ListCell *valptr;
+ int i;
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = parts[i];
+
+ foreach(valptr, sps->bound->listdatums)
+ {
+ Const *val = lfirst_node(Const, valptr);
+
+ if (isnull && val->constisnull)
+ return true;
+
+ if (!isnull && !val->constisnull)
+ {
+ if (DatumGetInt32(FunctionCall2Coll(&partsupfunc[0],
+ partcollation[0],
+ val->constvalue,
+ value)) == 0)
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/*
+ * check_parent_values_in_new_partitions
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that all values of split partition (with Oid partOid) contains in new
+ * partitions.
+ *
+ * parent: partitioned table
+ * partOid: split partition Oid
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_parent_values_in_new_partitions(Relation parent,
+ Oid partOid,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int i;
+ bool found = true;
+ bool searchNull = false;
+ Datum datum = PointerGetDatum(NULL);
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Special processing for NULL value. Search NULL-value if it contains
+ * split partition (partOid).
+ */
+ if (partition_bound_accepts_nulls(boundinfo) &&
+ partdesc->oids[boundinfo->null_index] == partOid)
+ {
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, true))
+ {
+ found = false;
+ searchNull = true;
+ }
+ }
+
+ /*
+ * Search all values of split partition with partOid in PartitionDesc of
+ * partitionde table.
+ */
+ for (i = 0; i < boundinfo->ndatums; i++)
+ {
+ if (partdesc->oids[boundinfo->indexes[i]] == partOid)
+ {
+ /* We found value that split partition contains. */
+ datum = boundinfo->datums[i][0];
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, false))
+ {
+ found = false;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ {
+ Const *notFoundVal;
+
+ if (!searchNull)
+ /* Make Const for get string representation of not found value. */
+ notFoundVal = makeConst(key->parttypid[0],
+ key->parttypmod[0],
+ key->parttypcoll[0],
+ key->parttyplen[0],
+ datum,
+ false, /* isnull */
+ key->parttypbyval[0]);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partitions not have value %s but split partition has",
+ searchNull ? "NULL" : get_list_partvalue_string(notFoundVal))));
+ }
+}
+
+/*
+ * check_partitions_for_split
+ *
+ * Checks new partitions for SPLIT PARTITIONS command:
+ * 1. DEFAULT partition should be one.
+ * 2. New partitions should have different names
+ * (with existing partitions too).
+ * 3. Bounds of new partitions should not overlap with new and existing
+ * partitions.
+ * 4. In case split partition is DEFAULT partition, one of new partitions
+ * should be DEFAULT.
+ * 5. In case new partitions or existing partitions contains DEFAULT
+ * partition, new partitions can have any bounds inside split
+ * partition bound (can be spaces between partitions bounds).
+ * 6. In case partitioned table does not have DEFAULT partition, DEFAULT
+ * partition can be defined as one of new partition.
+ * 7. In case new partitions not contains DEFAULT partition and
+ * partitioned table does not have DEFAULT partition the following
+ * should be true: sum bounds of new partitions should be equal
+ * to bound of split partition.
+ *
+ * parent: partitioned table
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * list: list of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate)
+{
+ PartitionKey key;
+ char strategy;
+ Oid defaultPartOid;
+ bool isSplitPartDefault;
+ bool existsDefaultPart;
+ ListCell *listptr;
+ int default_index = -1;
+ int i,
+ j;
+ SinglePartitionSpec **new_parts;
+ SinglePartitionSpec *spsPrev = NULL;
+ int nparts = 0;
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ switch (strategy)
+ {
+ case PARTITION_STRATEGY_LIST:
+ case PARTITION_STRATEGY_RANGE:
+ {
+ /*
+ * Make array new_parts with new partitions except DEFAULT
+ * partition.
+ */
+ new_parts = (SinglePartitionSpec **)
+ palloc0(list_length(partlist) * sizeof(SinglePartitionSpec *));
+ i = 0;
+ foreach(listptr, partlist)
+ {
+ SinglePartitionSpec *sps =
+ (SinglePartitionSpec *) lfirst(listptr);
+
+ if (sps->bound->is_default)
+ {
+ if (default_index >= 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("DEFAULT partition should be one")),
+ parser_errposition(pstate, sps->name->location));
+ default_index = i;
+ }
+ else
+ {
+ new_parts[nparts++] = sps;
+ }
+ i++;
+ }
+ }
+ break;
+
+ case PARTITION_STRATEGY_HASH:
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be split")));
+ break;
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ break;
+ }
+
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ PartitionRangeBound **lower_bounds;
+ SinglePartitionSpec **tmp_new_parts;
+
+ /*
+ * For simplify check for ranges of new partitions need to sort all
+ * partitions in ascending order of them bounds (we compare upper
+ * bound only).
+ */
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /* Create array of lower bounds. */
+ for (i = 0; i < nparts; i++)
+ {
+ lower_bounds[i] = make_one_partition_rbound(key, i,
+ new_parts[i]->bound->lowerdatums, true);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Reorder array of partitions. */
+ tmp_new_parts = new_parts;
+ new_parts = (SinglePartitionSpec **)
+ palloc0(nparts * sizeof(SinglePartitionSpec *));
+ for (i = 0; i < nparts; i++)
+ new_parts[i] = tmp_new_parts[lower_bounds[i]->index];
+
+ pfree(tmp_new_parts);
+ pfree(lower_bounds);
+ }
+
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(parent, true));
+
+ /* isSplitPartDefault flag: is split partition a DEFAULT partition? */
+ isSplitPartDefault = (defaultPartOid == splitPartOid);
+
+ if (isSplitPartDefault && default_index < 0)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("any partition in the list should be DEFAULT because split partition is DEFAULT")),
+ parser_errposition(pstate, ((SinglePartitionSpec *) linitial(partlist))->name->location));
+ }
+ else if (!isSplitPartDefault && (default_index >= 0) && OidIsValid(defaultPartOid))
+ {
+ SinglePartitionSpec *spsDef =
+ (SinglePartitionSpec *) list_nth(partlist, default_index);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition cannot be DEFAULT because DEFAULT partition already exists")),
+ parser_errposition(pstate, spsDef->name->location));
+ }
+
+ /* Indicator that partitioned table has (or will have) DEFAULT partition */
+ existsDefaultPart = OidIsValid(defaultPartOid) || (default_index >= 0);
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = new_parts[i];
+
+ if (isSplitPartDefault)
+ {
+ /*
+ * In case split partition is DEFAULT partition we can use any
+ * free ranges - as when creating a new partition.
+ */
+ check_new_partition_bound(sps->name->relname, parent, sps->bound,
+ pstate);
+ }
+ else
+ {
+ /*
+ * Checks that bound of current partition is inside bound of split
+ * partition. For range partitioning: checks that upper bound of
+ * previous partition is equal to lower bound of current
+ * partition. For list partitioning: checks that split partition
+ * contains all values of current partition.
+ */
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ bool first = (i == 0);
+ bool last = (i == (nparts - 1));
+
+ check_partition_bounds_for_split_range(parent, sps->name->relname, sps->bound,
+ splitPartOid, splitPartName,
+ first, last,
+ existsDefaultPart, pstate);
+ }
+ else
+ check_partition_bounds_for_split_list(parent, sps->name->relname,
+ sps->bound, splitPartOid, pstate);
+ }
+
+ /* Ranges of new partitions should not overlap. */
+ if (strategy == PARTITION_STRATEGY_RANGE && spsPrev)
+ check_two_partitions_bounds_range(parent, spsPrev->name, spsPrev->bound,
+ sps->name, sps->bound, existsDefaultPart, pstate);
+
+ spsPrev = sps;
+
+ /* Check: new partitions should have different names. */
+ for (j = i + 1; j < nparts; j++)
+ {
+ SinglePartitionSpec *sps2 = new_parts[j];
+
+ if (equal(sps->name, sps2->name))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("name \"%s\" already used", sps2->name->relname)),
+ parser_errposition(pstate, sps2->name->location));
+ }
+ }
+
+ if (strategy == PARTITION_STRATEGY_LIST)
+ {
+ /* Values of new partitions should not overlap. */
+ check_partitions_not_overlap_list(parent, new_parts, nparts,
+ pstate);
+
+ /*
+ * Need to check that all values of split partition contains in new
+ * partitions. Skip this check if DEFAULT partition exists.
+ */
+ if (!existsDefaultPart)
+ check_parent_values_in_new_partitions(parent, splitPartOid,
+ new_parts, nparts, pstate);
+ }
+
+ pfree(new_parts);
+}
+
/*
* calculate_partition_bound_for_merge
*
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index a51717e36ce..65d64241563 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -13029,3 +13029,21 @@ get_range_partbound_string(List *bound_datums)
return buf->data;
}
+
+/*
+ * get_list_partvalue_string
+ * A C string representation of one list partition value
+ */
+char *
+get_list_partvalue_string(Const *val)
+{
+ deparse_context context;
+ StringInfo buf = makeStringInfo();
+
+ memset(&context, 0, sizeof(deparse_context));
+ context.buf = buf;
+
+ get_const_expr(val, &context, -1);
+
+ return buf->data;
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 27c28139c84..03c1f27053f 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -2344,6 +2344,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_SplitPartition, /* SPLIT PARTITION */
AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index e2b4700d97b..480896e7b66 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -415,6 +415,7 @@ PG_KEYWORD("skip", SKIP, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("smallint", SMALLINT, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("snapshot", SNAPSHOT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("some", SOME, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("split", SPLIT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("sql", SQL_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("stable", STABLE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("standalone", STANDALONE_P, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 0329d7bd848..9d2a26705f0 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,6 +143,11 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate);
extern void calculate_partition_bound_for_merge(Relation parent,
List *partNames,
List *partOids,
diff --git a/src/include/utils/ruleutils.h b/src/include/utils/ruleutils.h
index 161fb5ef02c..6d860806221 100644
--- a/src/include/utils/ruleutils.h
+++ b/src/include/utils/ruleutils.h
@@ -49,4 +49,6 @@ extern char *get_range_partbound_string(List *bound_datums);
extern char *pg_get_statisticsobjdef_string(Oid statextid);
+extern char *get_list_partvalue_string(Const *val);
+
#endif /* RULEUTILS_H */
diff --git a/src/test/isolation/expected/partition-split.out b/src/test/isolation/expected/partition-split.out
new file mode 100644
index 00000000000..5d9e8b0925f
--- /dev/null
+++ b/src/test/isolation/expected/partition-split.out
@@ -0,0 +1,190 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s1b s1splt s2b s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2brr s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2bs s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2b s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2brr s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2bs s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2b s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2brr s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2bs s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 8bcaa8a6254..0342eb39e40 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -104,6 +104,7 @@ test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
test: partition-merge
+test: partition-split
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-split.spec b/src/test/isolation/specs/partition-split.spec
new file mode 100644
index 00000000000..087239a4a19
--- /dev/null
+++ b/src/test/isolation/specs/partition-split.spec
@@ -0,0 +1,54 @@
+# Verify that SPLIT operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1splt { ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20)); }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s1 starts SPLIT PARTITION then s2 trying to insert row and
+# waits until s1 finished SPLIT operation.
+
+permutation s1b s1splt s2b s2i s1c s2c s2s
+permutation s1b s1splt s2brr s2i s1c s2c s2s
+permutation s1b s1splt s2bs s2i s1c s2c s2s
+
+permutation s1brr s1splt s2b s2i s1c s2c s2s
+permutation s1brr s1splt s2brr s2i s1c s2c s2s
+permutation s1brr s1splt s2bs s2i s1c s2c s2s
+
+permutation s1bs s1splt s2b s2i s1c s2c s2s
+permutation s1bs s1splt s2brr s2i s1c s2c s2s
+permutation s1bs s1splt s2bs s2i s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 69920757b21..265ef2a5470 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_SplitPartition:
+ strtype = "SPLIT PARTITION";
+ break;
case AT_MergePartitions:
strtype = "MERGE PARTITIONS";
break;
diff --git a/src/test/regress/expected/partition_split.out b/src/test/regress/expected/partition_split.out
new file mode 100644
index 00000000000..7eb52f6feef
--- /dev/null
+++ b/src/test/regress/expected/partition_split.out
@@ -0,0 +1,1417 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_xxx" does not exist
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_jan2022" already exists
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: invalid bound specification for a range partition
+LINE 2: (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '202...
+ ^
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: empty range bound specified for partition "sales_mar2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+DETAIL: Specified lower bound ('03-01-2022') is greater than or equal to upper bound ('02-01-2022').
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+ERROR: list of new partitions should contains at least two items
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO...
+ ^
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb_mar_apr2022" already used
+LINE 3: PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03...
+ ^
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb2022" already used
+LINE 3: PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+LINE 4: ... sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-0...
+ ^
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_feb2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO...
+ ^
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO...
+ ^
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(4 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+ERROR: relation "sales_jan_feb2022" does not exist
+LINE 1: SELECT * FROM sales_jan_feb2022;
+ ^
+DROP TABLE sales_date CASCADE;
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 7 | Li | 175 | 03-08-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 11 | Trump | 380 | 04-06-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(11 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+-----------------------------+------------+----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx | | CREATE INDEX sales_others_sales_date_idx ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_feb2022 | sales_feb2022_sales_date_idx | | CREATE INDEX sales_feb2022_sales_date_idx ON partition_split_schema.sales_feb2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_mar2022 | sales_mar2022_sales_date_idx | | CREATE INDEX sales_mar2022_sales_date_idx ON partition_split_schema.sales_mar2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_apr2022 | sales_apr2022_sales_date_idx | | CREATE INDEX sales_apr2022_sales_date_idx ON partition_split_schema.sales_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+------------------------------+------------+-----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx1 | | CREATE INDEX sales_others_sales_date_idx1 ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211230) TO (2022...
+ ^
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+LINE 4: PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20...
+ ^
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211210) TO (2021...
+ ^
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211201) TO (2022...
+ ^
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+LINE 2: (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20...
+ ^
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_sales_amount_check"
+DETAIL: Failing row contains (1, 0, 03-11-2022).
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(-1) is not present in table "salesmans".
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(40) is not present in table "salesmans".
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+SELECT * FROM salesmans1_2;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans2_3;
+ salesman_id | salesman_name
+-------------+---------------
+ 2 | Ivanov
+(1 row)
+
+SELECT * FROM salesmans3_4;
+ salesman_id | salesman_name
+-------------+---------------
+ 3 | May
+(1 row)
+
+SELECT * FROM salesmans4_5;
+ salesman_id | salesman_name
+-------------+---------------
+ 4 | Ford
+(1 row)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+(2 rows)
+
+select * from salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+select * from salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_east" would overlap with another (not split) partition "sales_nord"
+LINE 3: ...ALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'...
+ ^
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+LINE 2: (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk...
+ ^
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+LINE 2: ...est FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ ^
+DROP TABLE sales_list;
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partitions not have value NULL but split partition has
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+ERROR: new partitions not have value 'Volgograd' but split partition has
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_west;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+(4 rows)
+
+SELECT * FROM sales_east;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+(2 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_central;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(4 rows)
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 026e7a77675..7cd4deda9bf 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_split partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_split.sql b/src/test/regress/sql/partition_split.sql
new file mode 100644
index 00000000000..40c71889b6e
--- /dev/null
+++ b/src/test/regress/sql/partition_split.sql
@@ -0,0 +1,833 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+
+DROP TABLE sales_date CASCADE;
+
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_others;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+
+SELECT * FROM salesmans1_2;
+SELECT * FROM salesmans2_3;
+SELECT * FROM salesmans3_4;
+SELECT * FROM salesmans4_5;
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+select * from salesmans01_10;
+select * from salesmans10_20;
+select * from salesmans20_30;
+select * from salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+DROP TABLE sales_list;
+
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_west;
+SELECT * FROM sales_east;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_central;
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index aa3025676fd..877c1101f2e 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2666,6 +2666,7 @@ SpecialJoinInfo
SpinDelayStatus
SplitInterval
SplitLR
+SplitPartitionContext
SplitPageLayout
SplitPoint
SplitTextOutputData
--
2.39.3 (Apple Git-145)
[application/octet-stream] 0003-Documentation-for-ALTER-TABLE-SPLIT-PARTITION-ME-v27.patch (9.8K, ../../CAPpHfdsCCV8DOv0Ovu4dTSnuWXiEz_AjuW-J6TPj++tcfEGvRw@mail.gmail.com/4-0003-Documentation-for-ALTER-TABLE-SPLIT-PARTITION-ME-v27.patch)
download | inline diff:
From 631a522e56fc8e586bb490601ae292739bcaa864 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Tue, 28 Mar 2023 10:50:19 +0300
Subject: [PATCH 3/3] Documentation for ALTER TABLE SPLIT PARTITION/MERGE
PARTITIONS commands
---
doc/src/sgml/ref/alter_table.sgml | 138 +++++++++++++++++++++++++++++-
1 file changed, 135 insertions(+), 3 deletions(-)
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 6cdcd779ef8..945228d84b1 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,13 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO
+ (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT },
+ PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
+ INTO <replaceable class="parameter">partition_name</replaceable>
<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>
@@ -1118,14 +1125,113 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-split-partition">
+ <term><literal>SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }, PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])</literal></term>
+
+ <listitem>
+ <para>
+ This form splits a single partition of the target table. Hash-partitioning
+ is not supported. Bounds of new partitions should not overlap with new and
+ existing partitions (except <replaceable class="parameter">partition_name</replaceable>).
+ If the split partition is a DEFAULT partition, one of the new partitions must be DEFAULT.
+ In case one of the new partitions or one of existing partitions is DEFAULT,
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have spaces
+ between partitions bounds. If the partitioned table does not have a DEFAULT
+ partition, the DEFAULT partition can be defined as one of the new partitions.
+ </para>
+ <para>
+ In case new partitions do not contain a DEFAULT partition and the partitioned table
+ does not have a DEFAULT partition, the following must be true: sum bounds of
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... should be
+ equal to bound of split partition <replaceable class="parameter">partition_name</replaceable>.
+ One of the new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have
+ the same name as split partition <replaceable class="parameter">partition_name</replaceable>
+ (this is suitable in case of splitting a DEFAULT partition: we split it, but after
+ splitting we have a partition with the same name).
+ Only simple, non-partitioned partition can be split.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="sql-altertable-merge-partitions">
+ <term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
+
+ <listitem>
+ <para>
+ This form merge several partitions into one partition of the target table.
+ Hash-partitioning is not supported. If DEFAULT partition is not in the
+ list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ For range-partitioned tables is necessary that the ranges
+ of the partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] can
+ be merged into one range without spaces and overlaps (otherwise an error
+ will be generated). The combined range will be the range for the partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For list-partitioned tables the values lists of all partitions
+ <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] are
+ combined and form a list of values of partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ If DEFAULT partition is in the list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ The partition <replaceable class="parameter">partition_name</replaceable>
+ will be the DEFAULT partition.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For range- and list-partitioned tables the ranges and lists of values
+ of the merged partitions can be any.
+ </para>
+ </listitem>
+ </itemizedlist>
+ The new partition <replaceable class="parameter">partition_name</replaceable>
+ can have the same name as one of the merged partitions. Only simple,
+ non-partitioned partitions can be merged.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
</variablelist>
</para>
<para>
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
- <literal>ATTACH PARTITION</literal>, and
- <literal>DETACH PARTITION</literal> can be combined into
+ <literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
+ <literal>SPLIT PARTITION</literal>, and <literal>MERGE PARTITIONS</literal>
+ can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1368,7 +1474,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<term><replaceable class="parameter">partition_name</replaceable></term>
<listitem>
<para>
- The name of the table to attach as a new partition or to detach from this table.
+ The name of the table to attach as a new partition or to detach from this table,
+ or the name of split partition, or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1784,6 +1891,31 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To split a single partition of the range-partitioned table:
+<programlisting>
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2023 INTO
+ (PARTITION sales_feb2023 FOR VALUES FROM ('2023-02-01') TO ('2023-03-01'),
+ PARTITION sales_mar2023 FOR VALUES FROM ('2023-03-01') TO ('2023-04-01'),
+ PARTITION sales_apr2023 FOR VALUES FROM ('2023-04-01') TO ('2023-05-01'));
+</programlisting></para>
+
+ <para>
+ To split a single partition of the list-partitioned table:
+<programlisting>
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+</programlisting></para>
+
+ <para>
+ To merge several partitions into one partition of the target table:
+<programlisting>
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central)
+ INTO sales_all;
+</programlisting></para>
+
</refsect1>
<refsect1>
--
2.39.3 (Apple Git-145)
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Add SPLIT PARTITION/MERGE PARTITIONS commands
@ 2024-03-31 00:56 Dmitry Koval <[email protected]>
parent: Alexander Korotkov <[email protected]>
1 sibling, 0 replies; 9+ messages in thread
From: Dmitry Koval @ 2024-03-31 00:56 UTC (permalink / raw)
To: Alexander Korotkov <[email protected]>; +Cc: [email protected]
Hi, Alexander!
Thank you very much for your work on refactoring the commits!
Yesterday I received an email from [email protected] <[email protected]>
with a proposal for optimization (MERGE PARTITION command) for cases
where the target partition has a name identical to one of the merging
partition names.
I think this optimization is worth considering.
A simplified version of the optimization is attached to this letter
(difference is 10-15 lines).
All changes made in one commit
(v28-0001-ALTER-TABLE-MERGE-PARTITIONS-command.patch) and in one
function (ATExecMergePartitions).
In your opinion, should we added this optimization now or should it be
left for later?
--
With best regards,
Dmitry Koval
Postgres Professional: http://postgrespro.com
From 873ddc54de176590efdd61121355f850359cfd1a Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 16:06:03 +0300
Subject: [PATCH v28 1/3] ALTER TABLE MERGE PARTITIONS command
---
src/backend/commands/tablecmds.c | 348 ++++++++-
src/backend/parser/gram.y | 22 +-
src/backend/parser/parse_utilcmd.c | 89 +++
src/backend/partitioning/partbounds.c | 207 +++++
src/include/nodes/parsenodes.h | 14 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 6 +
.../isolation/expected/partition-merge.out | 199 +++++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-merge.spec | 54 ++
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_merge.out | 736 ++++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_merge.sql | 434 +++++++++++
src/tools/pgindent/typedefs.list | 1 +
15 files changed, 2098 insertions(+), 19 deletions(-)
create mode 100644 src/test/isolation/expected/partition-merge.out
create mode 100644 src/test/isolation/specs/partition-merge.spec
create mode 100644 src/test/regress/expected/partition_merge.out
create mode 100644 src/test/regress/sql/partition_merge.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 6741e721ae..61ed046102 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,8 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context);
/* ----------------------------------------------------------------
* DefineRelation
@@ -4738,6 +4740,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_MergePartitions:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5157,6 +5163,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_MergePartitions:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5554,6 +5565,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_MergePartitions:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecMergePartitions(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -6544,6 +6563,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_MergePartitions:
+ return "MERGE PARTITIONS";
case AT_AddIdentity:
return "ALTER COLUMN ... ADD IDENTITY";
case AT_SetIdentity:
@@ -19038,6 +19059,37 @@ QueuePartitionConstraintValidation(List **wqueue, Relation scanrel,
}
}
+/*
+ * attachPartitionTable: attach new partition to partitioned table
+ *
+ * wqueue: the ALTER TABLE work queue; can be NULL when not running as part
+ * of an ALTER TABLE sequence.
+ * rel: partitioned relation;
+ * attachrel: relation of attached partition;
+ * bound: bounds of attached relation.
+ */
+static void
+attachPartitionTable(List **wqueue, Relation rel, Relation attachrel, PartitionBoundSpec *bound)
+{
+ /* OK to create inheritance. Rest of the checks performed there */
+ CreateInheritance(attachrel, rel, true);
+
+ /* Update the pg_class entry. */
+ StorePartitionBound(attachrel, rel, bound);
+
+ /* Ensure there exists a correct set of indexes in the partition. */
+ AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
+
+ /* and triggers */
+ CloneRowTriggersToPartition(rel, attachrel);
+
+ /*
+ * Clone foreign key constraints. Callee is responsible for setting up
+ * for phase 3 constraint verification.
+ */
+ CloneForeignKeyConstraints(wqueue, rel, attachrel);
+}
+
/*
* ALTER TABLE <name> ATTACH PARTITION <partition-name> FOR VALUES
*
@@ -19240,23 +19292,8 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd,
check_new_partition_bound(RelationGetRelationName(attachrel), rel,
cmd->bound, pstate);
- /* OK to create inheritance. Rest of the checks performed there */
- CreateInheritance(attachrel, rel, true);
-
- /* Update the pg_class entry. */
- StorePartitionBound(attachrel, rel, cmd->bound);
-
- /* Ensure there exists a correct set of indexes in the partition. */
- AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
-
- /* and triggers */
- CloneRowTriggersToPartition(rel, attachrel);
-
- /*
- * Clone foreign key constraints. Callee is responsible for setting up
- * for phase 3 constraint verification.
- */
- CloneForeignKeyConstraints(wqueue, rel, attachrel);
+ /* Attach a new partition to the partitioned table. */
+ attachPartitionTable(wqueue, rel, attachrel, cmd->bound);
/*
* Generate partition constraint from the partition bound specification.
@@ -20810,3 +20847,280 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+
+/*
+ * createPartitionTable: create table for new partition with given name
+ * (newPartName) like table (modelRelName)
+ *
+ * Emulates command: CREATE TABLE <newPartName> (LIKE <modelRelName>
+ * INCLUDING ALL EXCLUDING INDEXES EXCLUDING IDENTITY)
+ */
+static void
+createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
+ AlterTableUtilityContext *context)
+{
+ CreateStmt *createStmt;
+ TableLikeClause *tlc;
+ PlannedStmt *wrapper;
+
+ createStmt = makeNode(CreateStmt);
+ createStmt->relation = newPartName;
+ createStmt->tableElts = NIL;
+ createStmt->inhRelations = NIL;
+ createStmt->constraints = NIL;
+ createStmt->options = NIL;
+ createStmt->oncommit = ONCOMMIT_NOOP;
+ createStmt->tablespacename = NULL;
+ createStmt->if_not_exists = false;
+
+ tlc = makeNode(TableLikeClause);
+ tlc->relation = modelRelName;
+
+ /*
+ * Indexes will be inherited on "attach new partitions" stage, after data
+ * moving.
+ */
+ tlc->options = CREATE_TABLE_LIKE_ALL & ~(CREATE_TABLE_LIKE_INDEXES | CREATE_TABLE_LIKE_IDENTITY);
+ tlc->relationOid = InvalidOid;
+ createStmt->tableElts = lappend(createStmt->tableElts, tlc);
+
+ /* Need to make a wrapper PlannedStmt. */
+ wrapper = makeNode(PlannedStmt);
+ wrapper->commandType = CMD_UTILITY;
+ wrapper->canSetTag = false;
+ wrapper->utilityStmt = (Node *) createStmt;
+ wrapper->stmt_location = context->pstmt->stmt_location;
+ wrapper->stmt_len = context->pstmt->stmt_len;
+
+ ProcessUtility(wrapper,
+ context->queryString,
+ false,
+ PROCESS_UTILITY_SUBCOMMAND,
+ NULL,
+ NULL,
+ None_Receiver,
+ NULL);
+}
+
+/*
+ * moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
+ * of the partitioned table (rel) and move rows into the new partition
+ * (newPartRel).
+ */
+static void
+moveMergedTablesRows(Relation rel, List *mergingPartitionsList,
+ Relation newPartRel)
+{
+ CommandId mycid;
+
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ ListCell *listptr;
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot;
+
+ mycid = GetCurrentCommandId(true);
+
+ /* Prepare a BulkInsertState for table_tuple_insert. */
+ bistate = GetBulkInsertState();
+
+ /* Create necessary tuple slot. */
+ dstslot = MakeSingleTupleTableSlot(RelationGetDescr(newPartRel),
+ table_slot_callbacks(newPartRel));
+ ExecStoreAllNullTuple(dstslot);
+
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+ TupleTableSlot *srcslot;
+ TupleConversionMap *tuple_map;
+ TableScanDesc scan;
+ Snapshot snapshot;
+
+ /* Create tuple slot for new partition. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(mergingPartition),
+ table_slot_callbacks(mergingPartition));
+
+ /*
+ * Map computing for moving attributes of merged partition to new
+ * partition.
+ */
+ tuple_map = convert_tuples_by_name(RelationGetDescr(mergingPartition),
+ RelationGetDescr(newPartRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(mergingPartition, snapshot, 0, NULL);
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ table_tuple_insert(newPartRel, insertslot, mycid, ti_options, bistate);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+ }
+
+ ExecDropSingleTupleTableSlot(dstslot);
+ FreeBulkInsertState(bistate);
+
+ table_finish_bulk_insert(newPartRel, ti_options);
+}
+
+/*
+ * ALTER TABLE <name> MERGE PARTITIONS <partition-list> INTO <partition-name>
+ */
+static void
+ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation newPartRel;
+ ListCell *listptr;
+ List *mergingPartitionsList = NIL;
+ Oid defaultPartOid;
+ RangeVar *mergePartName = cmd->name;
+ bool isSameName = false;
+
+ /*
+ * Lock all merged partitions, check them and create list with partitions
+ * contexts.
+ */
+ foreach(listptr, cmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+ Relation mergingPartition;
+
+ /*
+ * We are going to detach and remove this partition: need to use
+ * exclusive lock for prevent DML-queries to the partition.
+ */
+ mergingPartition = table_openrv(name, AccessExclusiveLock);
+
+ if (mergingPartition->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot merge non-table partition \"%s\"",
+ RelationGetRelationName(mergingPartition))));
+
+ /*
+ * Checking that two partitions have the same name was before, in
+ * function transformPartitionCmdForMerge().
+ */
+ if (equal(name, cmd->name))
+ {
+ /* One new partition can have the same name as merged partition. */
+ isSameName = true;
+ newPartRel = mergingPartition;
+ }
+ else
+ {
+ /* Store a next merging partition into the list. */
+ mergingPartitionsList = lappend(mergingPartitionsList,
+ mergingPartition);
+ }
+ }
+
+ /* Detach all merged partitions. */
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(mergingPartition, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, mergingPartition, false, defaultPartOid);
+ }
+
+ if (isSameName)
+ {
+ /* Detach partition that we re-use for merged partition. */
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(newPartRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, newPartRel, false, defaultPartOid);
+
+ /* Make these updates visible */
+ CommandCounterIncrement();
+ }
+ else
+ {
+ /* Create table for new partition, use partitioned table as model. */
+ createPartitionTable(mergePartName,
+ makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1),
+ context);
+
+ /*
+ * Open the new partition and acquire exclusive lock on it. This will
+ * stop all the operations with partitioned table. This might seem
+ * excessive, but this is the way we make sure nobody is planning
+ * queries involving merging partitions.
+ */
+ newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+ }
+
+ /* Copy data from merged partitions to new partition. */
+ moveMergedTablesRows(rel, mergingPartitionsList, newPartRel);
+
+ /*
+ * Attach a new partition to the partitioned table. wqueue = NULL:
+ * verification for each cloned constraint is not need.
+ */
+ attachPartitionTable(NULL, rel, newPartRel, cmd->bound);
+
+ /* Unlock and drop merged partitions. */
+ foreach(listptr, mergingPartitionsList)
+ {
+ ObjectAddress object;
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Get relation id before table_close() call. */
+ object.objectId = RelationGetRelid(mergingPartition);
+ object.classId = RelationRelationId;
+ object.objectSubId = 0;
+
+ /* Keep the lock until commit. */
+ table_close(mergingPartition, NoLock);
+
+ performDeletion(&object, DROP_RESTRICT, 0);
+ }
+ list_free(mergingPartitionsList);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+}
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index c1b0cff1c9..0d9d351b44 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -755,7 +755,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
ORDER ORDINALITY OTHERS OUT_P OUTER_P
OVER OVERLAPS OVERLAY OVERRIDING OWNED OWNER
- PARALLEL PARAMETER PARSER PARTIAL PARTITION PASSING PASSWORD
+ PARALLEL PARAMETER PARSER PARTIAL PARTITION PARTITIONS PASSING PASSWORD
PERIOD PLACING PLANS POLICY
POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
PRIOR PRIVILEGES PROCEDURAL PROCEDURE PROCEDURES PROGRAM PUBLICATION
@@ -2310,6 +2310,7 @@ partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = $4;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -2324,6 +2325,7 @@ partition_cmd:
n->subtype = AT_DetachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = $4;
n->def = (Node *) cmd;
@@ -2337,6 +2339,21 @@ partition_cmd:
n->subtype = AT_DetachPartitionFinalize;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
+ /* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
+ | MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_MergePartitions;
+ cmd->name = $7;
+ cmd->bound = NULL;
+ cmd->partlist = $4;
cmd->concurrent = false;
n->def = (Node *) cmd;
$$ = (Node *) n;
@@ -2353,6 +2370,7 @@ index_partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -17510,6 +17528,7 @@ unreserved_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
@@ -18128,6 +18147,7 @@ bare_label_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index c7efd8d8ce..48a23c7ca4 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -58,6 +58,8 @@
#include "parser/parse_type.h"
#include "parser/parse_utilcmd.h"
#include "parser/parser.h"
+#include "partitioning/partdesc.h"
+#include "partitioning/partbounds.h"
#include "rewrite/rewriteManip.h"
#include "utils/acl.h"
#include "utils/builtins.h"
@@ -3413,6 +3415,80 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForMerge
+ * Analyze the ALTER TABLLE ... MERGE PARTITIONS command
+ *
+ * Does simple checks for merged partitions. Calculates bound of result
+ * partition.
+ */
+static void
+transformPartitionCmdForMerge(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Oid defaultPartOid;
+ Oid partOid;
+ Relation parent = cxt->rel;
+ PartitionKey key;
+ char strategy;
+ ListCell *listptr,
+ *listptr2;
+ bool isDefaultPart = false;
+ List *partOids = NIL;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ if (strategy == PARTITION_STRATEGY_HASH)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be merged")));
+
+ /* Is current partition a DEFAULT partition? */
+ defaultPartOid = get_default_oid_from_partdesc(
+ RelationGetPartitionDesc(parent, true));
+
+ foreach(listptr, partcmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+
+ /* Partitions in the list should have different names. */
+ for_each_cell(listptr2, partcmd->partlist, lnext(partcmd->partlist, listptr))
+ {
+ RangeVar *name2 = (RangeVar *) lfirst(listptr2);
+
+ if (equal(name, name2))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("partition with name \"%s\" already used", name->relname)),
+ parser_errposition(cxt->pstate, name2->location));
+ }
+
+ /* Search DEFAULT partition in the list. */
+ partOid = RangeVarGetRelid(name, NoLock, false);
+ if (partOid == defaultPartOid)
+ isDefaultPart = true;
+ partOids = lappend_oid(partOids, partOid);
+ }
+
+ /* Allocate bound of result partition. */
+ Assert(partcmd->bound == NULL);
+ partcmd->bound = makeNode(PartitionBoundSpec);
+
+ /* Fill partition bound. */
+ partcmd->bound->strategy = strategy;
+ partcmd->bound->location = -1;
+ partcmd->bound->is_default = isDefaultPart;
+ if (!isDefaultPart)
+ calculate_partition_bound_for_merge(parent, partcmd->partlist,
+ partOids, partcmd->bound,
+ cxt->pstate);
+}
+
/*
* transformAlterTableStmt -
* parse analysis for ALTER TABLE
@@ -3683,6 +3759,19 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_MergePartitions:
+ {
+ PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
+
+ if (list_length(partcmd->partlist) < 2)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("list of new partitions should contains at least two items")));
+ transformPartitionCmdForMerge(&cxt, partcmd);
+ newcmds = lappend(newcmds, cmd);
+ break;
+ }
+
default:
/*
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index c28639d2e3..9ed80d721e 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -4977,3 +4977,210 @@ satisfies_hash_partition(PG_FUNCTION_ARGS)
PG_RETURN_BOOL(rowHash % modulus == remainder);
}
+
+/*
+ * check_two_partitions_bounds_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * This is a helper function for check_partitions_for_split() and
+ * calculate_partition_bound_for_merge().
+ * This function compares upper bound of first_bound and lower bound of
+ * second_bound. These bounds should be equals except case
+ * "defaultPart == true" (this means that one of split partitions is DEFAULT).
+ * In this case upper bound of first_bound can be less than lower bound of
+ * second_bound because space between of these bounds will be included in
+ * DEFAULT partition.
+ *
+ * parent: partitioned table
+ * first_name: name of first partition
+ * first_bound: bound of first partition
+ * second_name: name of second partition
+ * second_bound: bound of second partition
+ * defaultPart: true if one of split partitions is DEFAULT
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_two_partitions_bounds_range(Relation parent,
+ RangeVar *first_name,
+ PartitionBoundSpec *first_bound,
+ RangeVar *second_name,
+ PartitionBoundSpec *second_bound,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *first_upper;
+ PartitionRangeBound *second_lower;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+
+ first_upper = make_one_partition_rbound(key, -1, first_bound->upperdatums, false);
+ second_lower = make_one_partition_rbound(key, -1, second_bound->lowerdatums, true);
+
+ /*
+ * lower1=false (the second to last argument) for correct comparison lower
+ * and upper bounds.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ second_lower->datums, second_lower->kind,
+ false, first_upper);
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ {
+ PartitionRangeDatum *datum = linitial(second_bound->lowerdatums);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("lower bound of partition \"%s\" conflicts with upper bound of previous partition \"%s\"",
+ second_name->relname, first_name->relname),
+ parser_errposition(pstate, datum->location)));
+ }
+}
+
+/*
+ * get_partition_bound_spec
+ *
+ * Returns description of partition with Oid "partOid" and name "name".
+ */
+static PartitionBoundSpec *
+get_partition_bound_spec(Oid partOid, RangeVar *name)
+{
+ HeapTuple tuple;
+ Datum datum;
+ bool isnull;
+ PartitionBoundSpec *boundspec = NULL;
+
+ /* Try fetching the tuple from the catcache, for speed. */
+ tuple = SearchSysCache1(RELOID, partOid);
+ if (!HeapTupleIsValid(tuple))
+ elog(ERROR, "cache lookup failed for relation \"%s\"",
+ name->relname);
+
+ datum = SysCacheGetAttr(RELOID, tuple,
+ Anum_pg_class_relpartbound,
+ &isnull);
+ if (isnull)
+ elog(ERROR, "partition bound for relation \"%s\" is null",
+ name->relname);
+
+ boundspec = stringToNode(TextDatumGetCString(datum));
+
+ if (!IsA(boundspec, PartitionBoundSpec))
+ elog(ERROR, "expected PartitionBoundSpec for relation \"%s\"",
+ name->relname);
+
+ ReleaseSysCache(tuple);
+ return boundspec;
+}
+
+/*
+ * calculate_partition_bound_for_merge
+ *
+ * Calculates the bound of merged partition "spec" by using the bounds of
+ * partitions to be merged.
+ *
+ * parent: partitioned table
+ * partNames: names of partitions to be merged
+ * partOids: Oids of partitions to be merged
+ * spec (out): bounds specification of the merged partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionBoundSpec *bound;
+
+ Assert(!spec->is_default);
+
+ switch (key->strategy)
+ {
+ case PARTITION_STRATEGY_RANGE:
+ {
+ int i;
+ PartitionRangeBound **lower_bounds;
+ int nparts = list_length(partOids);
+ List *bounds = NIL;
+
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /*
+ * Create array of lower bounds and list of
+ * PartitionBoundSpec.
+ */
+ for (i = 0; i < nparts; i++)
+ {
+ bound = get_partition_bound_spec(list_nth_oid(partOids, i),
+ (RangeVar *) list_nth(partNames, i));
+
+ lower_bounds[i] = make_one_partition_rbound(key, i, bound->lowerdatums, true);
+ bounds = lappend(bounds, bound);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Ranges of partitions should not overlap. */
+ for (i = 1; i < nparts; i++)
+ {
+ int index = lower_bounds[i]->index;
+ int prev_index = lower_bounds[i - 1]->index;
+
+ check_two_partitions_bounds_range(parent,
+ (RangeVar *) list_nth(partNames, prev_index),
+ (PartitionBoundSpec *) list_nth(bounds, prev_index),
+ (RangeVar *) list_nth(partNames, index),
+ (PartitionBoundSpec *) list_nth(bounds, index),
+ false, pstate);
+ }
+
+ /*
+ * Lower bound of first partition is a lower bound of merged
+ * partition.
+ */
+ spec->lowerdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[0]->index))->lowerdatums;
+
+ /*
+ * Upper bound of last partition is a upper bound of merged
+ * partition.
+ */
+ spec->upperdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[nparts - 1]->index))->upperdatums;
+
+ pfree(lower_bounds);
+ list_free(bounds);
+ break;
+ }
+
+ case PARTITION_STRATEGY_LIST:
+ {
+ ListCell *listptr,
+ *listptr2;
+
+ /* Consolidate bounds for all partitions in the list. */
+ forboth(listptr, partOids, listptr2, partNames)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr2);
+ Oid curOid = lfirst_oid(listptr);
+
+ bound = get_partition_bound_spec(curOid, name);
+ spec->listdatums = list_concat(spec->listdatums, bound->listdatums);
+ }
+ break;
+ }
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ }
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index b89baef95d..27c28139c8 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -933,6 +933,17 @@ typedef struct PartitionRangeDatum
ParseLoc location; /* token location, or -1 if unknown */
} PartitionRangeDatum;
+/*
+ * PartitionDesc - info about single partition for ALTER TABLE SPLIT PARTITION command
+ */
+typedef struct SinglePartitionSpec
+{
+ NodeTag type;
+
+ RangeVar *name; /* name of partition */
+ PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+} SinglePartitionSpec;
+
/*
* PartitionCmd - info for ALTER TABLE/INDEX ATTACH/DETACH PARTITION commands
*/
@@ -941,6 +952,8 @@ typedef struct PartitionCmd
NodeTag type;
RangeVar *name; /* name of partition to attach/detach */
PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+ List *partlist; /* list of partitions, for SPLIT PARTITION
+ * command */
bool concurrent;
} PartitionCmd;
@@ -2331,6 +2344,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
AT_DropIdentity, /* DROP IDENTITY */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 57514d064b..e2b4700d97 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -333,6 +333,7 @@ PG_KEYWORD("parameter", PARAMETER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("parser", PARSER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partial", PARTIAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partition", PARTITION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("partitions", PARTITIONS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("passing", PASSING, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("password", PASSWORD, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("period", PERIOD, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 3d9cc1031f..0329d7bd84 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,4 +143,10 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate);
+
#endif /* PARTBOUNDS_H */
diff --git a/src/test/isolation/expected/partition-merge.out b/src/test/isolation/expected/partition-merge.out
new file mode 100644
index 0000000000..98446aaab5
--- /dev/null
+++ b/src/test/isolation/expected/partition-merge.out
@@ -0,0 +1,199 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 188fc04f85..8bcaa8a625 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -103,6 +103,7 @@ test: partition-key-update-1
test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
+test: partition-merge
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-merge.spec b/src/test/isolation/specs/partition-merge.spec
new file mode 100644
index 0000000000..ec48732c58
--- /dev/null
+++ b/src/test/isolation/specs/partition-merge.spec
@@ -0,0 +1,54 @@
+# Verify that MERGE operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1merg { ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20; }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2u { UPDATE tpart SET t = 'text01modif' where i = 1; }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s2 inserts row into table. s1 starts MERGE PARTITIONS then
+# s2 trying to update inserted row and waits until s1 finished
+# MERGE operation.
+
+permutation s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 48563b2cf0..69920757b2 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_MergePartitions:
+ strtype = "MERGE PARTITIONS";
+ break;
case AT_AddIdentity:
strtype = "ADD IDENTITY";
break;
diff --git a/src/test/regress/expected/partition_merge.out b/src/test/regress/expected/partition_merge.out
new file mode 100644
index 0000000000..b53df2703b
--- /dev/null
+++ b/src/test/regress/expected/partition_merge.out
@@ -0,0 +1,736 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+ERROR: partition with name "sales_feb2022" already used
+LINE 1: ...e MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2...
+ ^
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+ERROR: cannot merge non-table partition "sales_apr2022"
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_jan2022"
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+ERROR: lower bound of partition "sales_jan2022" conflicts with upper bound of previous partition "sales_dec2021"
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | p | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_dec2021 | r | f | FOR VALUES FROM ('12-01-2021') TO ('12-31-2021')
+ sales_jan_feb_mar2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+ pg_get_partkeydef
+--------------------
+ RANGE (sales_date)
+(1 row)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_mar2022 | r | f | FOR VALUES FROM ('03-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_feb_mar_apr2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('05-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+-------------------------+-----------------------+--------------------------------------+------------+-----------------------------------------------------------------------------------------------------------------------------
+ partitions_merge_schema | sales_feb_mar_apr2022 | sales_feb_mar_apr2022_sales_date_idx | | CREATE INDEX sales_feb_mar_apr2022_sales_date_idx ON partitions_merge_schema.sales_feb_mar_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb_mar_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(10 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(10 rows)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_range;
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+select * from sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(7 rows)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+(2 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(2 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(6 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+DROP TABLE sales_date;
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+select * from salesmans;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(6 rows)
+
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(5 rows)
+
+DROP TABLE salesmans;
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr_all;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+ERROR: partition bound for relation "sales_external" is null
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+ERROR: partition bound for relation "sales_external2" is null
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------------
+ sales_central | r | f | FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd')
+ sales_east | r | f | FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_west | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+--------------+---------+------------------+---------------------------------------------------------------------------------------------------------------------------
+ sales_all | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Khabarovsk', 'Vladivostok', 'Moscow', 'Kazan', 'Volgograd')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_all;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(10 rows)
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 5ac6e871f5..026e7a7767 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_merge.sql b/src/test/regress/sql/partition_merge.sql
new file mode 100644
index 0000000000..8bf90fd621
--- /dev/null
+++ b/src/test/regress/sql/partition_merge.sql
@@ -0,0 +1,434 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb_mar_apr2022;
+SELECT * FROM sales_others;
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_range;
+
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+
+select * from sales_others;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+DROP TABLE sales_date;
+
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+select * from salesmans;
+select * from salesmans01_10;
+select * from salesmans10_40;
+
+DROP TABLE salesmans;
+
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr_all;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+
+
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_all;
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index cfa9d5aaea..aa3025676f 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2602,6 +2602,7 @@ SimpleStats
SimpleStringList
SimpleStringListCell
SingleBoundSortItem
+SinglePartitionSpec
Size
SkipPages
SlabBlock
--
2.40.1.windows.1
From 86a6f2b37e28fdcf4eff64701b1fdf77a51f3c52 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 17:58:52 +0300
Subject: [PATCH v28 2/3] ALTER TABLE SPLIT PARTITION command
---
src/backend/commands/tablecmds.c | 406 +++++
src/backend/parser/gram.y | 38 +-
src/backend/parser/parse_utilcmd.c | 62 +-
src/backend/partitioning/partbounds.c | 657 ++++++++
src/backend/utils/adt/ruleutils.c | 18 +
src/include/nodes/parsenodes.h | 1 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 5 +
src/include/utils/ruleutils.h | 2 +
.../isolation/expected/partition-split.out | 190 +++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-split.spec | 54 +
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_split.out | 1417 +++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_split.sql | 833 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
17 files changed, 3679 insertions(+), 12 deletions(-)
create mode 100644 src/test/isolation/expected/partition-split.out
create mode 100644 src/test/isolation/specs/partition-split.spec
create mode 100644 src/test/regress/expected/partition_split.out
create mode 100644 src/test/regress/sql/partition_split.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 61ed046102..e9ebb59d76 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,9 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab,
+ Relation rel, PartitionCmd *cmd,
+ AlterTableUtilityContext *context);
static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
PartitionCmd *cmd, AlterTableUtilityContext *context);
@@ -4740,6 +4743,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_SplitPartition:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
case AT_MergePartitions:
cmd_lockmode = AccessExclusiveLock;
break;
@@ -5163,6 +5170,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_SplitPartition:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
case AT_MergePartitions:
ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
/* No command-specific prep needed */
@@ -5565,6 +5577,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_SplitPartition:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecSplitPartition(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
case AT_MergePartitions:
cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
cur_pass, context);
@@ -6563,6 +6583,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_SplitPartition:
+ return "SPLIT PARTITION";
case AT_MergePartitions:
return "MERGE PARTITIONS";
case AT_AddIdentity:
@@ -20848,6 +20870,255 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+/*
+ * Struct with context of new partition for insert rows from splited partition
+ */
+typedef struct SplitPartitionContext
+{
+ ExprState *partqualstate; /* expression for check slot for partition
+ * (NULL for DEFAULT partition) */
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot; /* slot for insert row into partition */
+ Relation partRel; /* relation for partition */
+} SplitPartitionContext;
+
+
+/*
+ * createSplitPartitionContext: create context for partition and fill it
+ */
+static SplitPartitionContext *
+createSplitPartitionContext(Relation partRel)
+{
+ SplitPartitionContext *pc;
+
+ pc = (SplitPartitionContext *) palloc0(sizeof(SplitPartitionContext));
+ pc->partRel = partRel;
+
+ /*
+ * Prepare a BulkInsertState for table_tuple_insert. The FSM is empty, so
+ * don't bother using it.
+ */
+ pc->bistate = GetBulkInsertState();
+
+ /* Create tuple slot for new partition. */
+ pc->dstslot = MakeSingleTupleTableSlot(RelationGetDescr(pc->partRel),
+ table_slot_callbacks(pc->partRel));
+ ExecStoreAllNullTuple(pc->dstslot);
+
+ return pc;
+}
+
+/*
+ * deleteSplitPartitionContext: delete context for partition
+ */
+static void
+deleteSplitPartitionContext(SplitPartitionContext *pc, int ti_options)
+{
+ ExecDropSingleTupleTableSlot(pc->dstslot);
+ FreeBulkInsertState(pc->bistate);
+
+ table_finish_bulk_insert(pc->partRel, ti_options);
+
+ pfree(pc);
+}
+
+/*
+ * moveSplitTableRows: scan split partition (splitRel) of partitioned table
+ * (rel) and move rows into new partitions.
+ *
+ * New partitions description:
+ * partlist: list of pointers to SinglePartitionSpec structures.
+ * newPartRels: list of Relation's.
+ * defaultPartOid: oid of DEFAULT partition, for table rel.
+ */
+static void
+moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPartRels, Oid defaultPartOid)
+{
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ CommandId mycid;
+ EState *estate;
+ ListCell *listptr,
+ *listptr2;
+ TupleTableSlot *srcslot;
+ ExprContext *econtext;
+ TableScanDesc scan;
+ Snapshot snapshot;
+ MemoryContext oldCxt;
+ List *partContexts = NIL;
+ TupleConversionMap *tuple_map;
+ SplitPartitionContext *defaultPartCtx = NULL,
+ *pc;
+ bool isOldDefaultPart = false;
+
+ mycid = GetCurrentCommandId(true);
+
+ estate = CreateExecutorState();
+
+ forboth(listptr, partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ pc = createSplitPartitionContext((Relation) lfirst(listptr2));
+
+ if (sps->bound->is_default)
+ {
+ /* We should not create constraint for detached DEFAULT partition. */
+ defaultPartCtx = pc;
+ }
+ else
+ {
+ List *partConstraint;
+
+ /* Build expression execution states for partition check quals. */
+ partConstraint = get_qual_from_partbound(rel, sps->bound);
+ partConstraint =
+ (List *) eval_const_expressions(NULL,
+ (Node *) partConstraint);
+ /* Make boolean expression for ExecCheck(). */
+ partConstraint = list_make1(make_ands_explicit(partConstraint));
+
+ /*
+ * Map the vars in the constraint expression from rel's attnos to
+ * splitRel's.
+ */
+ partConstraint = map_partition_varattnos(partConstraint,
+ 1, splitRel, rel);
+
+ pc->partqualstate =
+ ExecPrepareExpr((Expr *) linitial(partConstraint), estate);
+ Assert(pc->partqualstate != NULL);
+ }
+
+ /* Store partition context into list. */
+ partContexts = lappend(partContexts, pc);
+ }
+
+ /*
+ * Create partition context for DEFAULT partition. We can insert values
+ * into this partition in case spaces with values between new partitions.
+ */
+ if (!defaultPartCtx && OidIsValid(defaultPartOid))
+ {
+ /* Indicate that we allocate context for old DEFAULT partition */
+ isOldDefaultPart = true;
+ defaultPartCtx = createSplitPartitionContext(table_open(defaultPartOid, AccessExclusiveLock));
+ }
+
+ econtext = GetPerTupleExprContext(estate);
+
+ /* Create necessary tuple slot. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(splitRel),
+ table_slot_callbacks(splitRel));
+
+ /*
+ * Map computing for moving attributes of split partition to new partition
+ * (for first new partition but other new partitions can use the same
+ * map).
+ */
+ pc = (SplitPartitionContext *) lfirst(list_head(partContexts));
+ tuple_map = convert_tuples_by_name(RelationGetDescr(splitRel),
+ RelationGetDescr(pc->partRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(splitRel, snapshot, 0, NULL);
+
+ /*
+ * Switch to per-tuple memory context and reset it for each tuple
+ * produced, so we don't leak memory.
+ */
+ oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(estate));
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ bool found = false;
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ econtext->ecxt_scantuple = srcslot;
+
+ /* Search partition for current slot srcslot. */
+ foreach(listptr, partContexts)
+ {
+ pc = (SplitPartitionContext *) lfirst(listptr);
+
+ if (pc->partqualstate /* skip DEFAULT partition */ &&
+ ExecCheck(pc->partqualstate, econtext))
+ {
+ found = true;
+ break;
+ }
+ ResetExprContext(econtext);
+ }
+ if (!found)
+ {
+ /* Use DEFAULT partition if it exists. */
+ if (defaultPartCtx)
+ pc = defaultPartCtx;
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_CHECK_VIOLATION),
+ errmsg("can not find partition for split partition row"),
+ errtable(splitRel)));
+ }
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, pc->dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = pc->dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ table_tuple_insert(pc->partRel, insertslot, mycid, ti_options, pc->bistate);
+
+ ResetExprContext(econtext);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ MemoryContextSwitchTo(oldCxt);
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+
+ FreeExecutorState(estate);
+
+ foreach(listptr, partContexts)
+ deleteSplitPartitionContext((SplitPartitionContext *) lfirst(listptr), ti_options);
+
+ /* Need to close table and free buffers for DEFAULT partition. */
+ if (isOldDefaultPart)
+ {
+ Relation defaultPartRel = defaultPartCtx->partRel;
+
+ deleteSplitPartitionContext(defaultPartCtx, ti_options);
+ /* Keep the lock until commit. */
+ table_close(defaultPartRel, NoLock);
+ }
+}
+
/*
* createPartitionTable: create table for new partition with given name
* (newPartName) like table (modelRelName)
@@ -20902,6 +21173,141 @@ createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
NULL);
}
+/*
+ * ALTER TABLE <name> SPLIT PARTITION <partition-name> INTO <partition-list>
+ */
+static void
+ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation splitRel;
+ Oid splitRelOid;
+ char relname[NAMEDATALEN];
+ Oid namespaceId;
+ ListCell *listptr,
+ *listptr2;
+ bool isSameName = false;
+ char tmpRelName[NAMEDATALEN];
+ List *newPartRels = NIL;
+ ObjectAddress object;
+ RangeVar *parentName;
+ Oid defaultPartOid;
+
+ defaultPartOid = get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+
+ /*
+ * We are going to detach and remove this partition: need to use exclusive
+ * lock for prevent DML-queries to the partition.
+ */
+ splitRel = table_openrv(cmd->name, AccessExclusiveLock);
+
+ if (splitRel->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot split non-table partition \"%s\"",
+ RelationGetRelationName(splitRel))));
+
+ splitRelOid = RelationGetRelid(splitRel);
+
+ /* Check descriptions of new partitions. */
+ foreach(listptr, cmd->partlist)
+ {
+ Oid existing_relid;
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ strlcpy(relname, sps->name->relname, NAMEDATALEN);
+
+ /*
+ * Look up the namespace in which we are supposed to create the
+ * partition, check we have permission to create there, lock it
+ * against concurrent drop, and mark stmt->relation as
+ * RELPERSISTENCE_TEMP if a temporary namespace is selected.
+ */
+ namespaceId =
+ RangeVarGetAndCheckCreationNamespace(sps->name, NoLock, NULL);
+
+ /*
+ * This would fail later on anyway, if the relation already exists.
+ * But by catching it here we can emit a nicer error message.
+ */
+ existing_relid = get_relname_relid(relname, namespaceId);
+ if (existing_relid == splitRelOid && !isSameName)
+ /* One new partition can have the same name as split partition. */
+ isSameName = true;
+ else if (existing_relid != InvalidOid)
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("relation \"%s\" already exists", relname)));
+ }
+
+ /* Detach split partition. */
+ RemoveInheritance(splitRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, splitRel, false, defaultPartOid);
+
+ /*
+ * If new partition has the same name as split partition then we should
+ * rename split partition for reuse name.
+ */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ sprintf(tmpRelName, "split-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ RenameRelationInternal(splitRelOid, tmpRelName, false, false);
+
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible after rename.
+ */
+ CommandCounterIncrement();
+ }
+
+ /* Create new partitions (like split partition), without indexes. */
+ parentName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1);
+ foreach(listptr, cmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel;
+
+ createPartitionTable(sps->name, parentName, context);
+
+ /* Open the new partition and acquire exclusive lock on it. */
+ newPartRel = table_openrv(sps->name, AccessExclusiveLock);
+
+ newPartRels = lappend(newPartRels, newPartRel);
+ }
+
+ /* Copy data from split partition to new partitions. */
+ moveSplitTableRows(rel, splitRel, cmd->partlist, newPartRels, defaultPartOid);
+ /* Keep the lock until commit. */
+ table_close(splitRel, NoLock);
+
+ /* Attach new partitions to partitioned table. */
+ forboth(listptr, cmd->partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel = (Relation) lfirst(listptr2);
+
+ /* wqueue = NULL: verification for each cloned constraint is not need. */
+ attachPartitionTable(NULL, rel, newPartRel, sps->bound);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+ }
+
+ /* Drop split partition. */
+ object.classId = RelationRelationId;
+ object.objectId = splitRelOid;
+ object.objectSubId = 0;
+ /* Probably DROP_CASCADE is not needed. */
+ performDeletion(&object, DROP_RESTRICT, 0);
+}
+
/*
* moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
* of the partitioned table (rel) and move rows into the new partition
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 0d9d351b44..16d766786b 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -270,6 +270,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
PartitionElem *partelem;
PartitionSpec *partspec;
PartitionBoundSpec *partboundspec;
+ SinglePartitionSpec *singlepartspec;
RoleSpec *rolespec;
PublicationObjSpec *publicationobjectspec;
struct SelectLimit *selectlimit;
@@ -645,6 +646,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
%type <partelem> part_elem
%type <list> part_params
%type <partboundspec> PartitionBoundSpec
+%type <singlepartspec> SinglePartitionSpec
+%type <list> partitions_list
%type <list> hash_partbound
%type <defelt> hash_partbound_elem
@@ -770,7 +773,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
SAVEPOINT SCALAR SCHEMA SCHEMAS SCROLL SEARCH SECOND_P SECURITY SELECT
SEQUENCE SEQUENCES
SERIALIZABLE SERVER SESSION SESSION_USER SET SETS SETOF SHARE SHOW
- SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SQL_P STABLE STANDALONE_P
+ SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SPLIT SQL_P STABLE STANDALONE_P
START STATEMENT STATISTICS STDIN STDOUT STORAGE STORED STRICT_P STRING_P STRIP_P
SUBSCRIPTION SUBSTRING SUPPORT SYMMETRIC SYSID SYSTEM_P SYSTEM_USER
@@ -2300,6 +2303,23 @@ alter_table_cmds:
| alter_table_cmds ',' alter_table_cmd { $$ = lappend($1, $3); }
;
+partitions_list:
+ SinglePartitionSpec { $$ = list_make1($1); }
+ | partitions_list ',' SinglePartitionSpec { $$ = lappend($1, $3); }
+ ;
+
+SinglePartitionSpec:
+ PARTITION qualified_name PartitionBoundSpec
+ {
+ SinglePartitionSpec *n = makeNode(SinglePartitionSpec);
+
+ n->name = $2;
+ n->bound = $3;
+
+ $$ = n;
+ }
+ ;
+
partition_cmd:
/* ALTER TABLE <name> ATTACH PARTITION <table_name> FOR VALUES */
ATTACH PARTITION qualified_name PartitionBoundSpec
@@ -2344,6 +2364,20 @@ partition_cmd:
n->def = (Node *) cmd;
$$ = (Node *) n;
}
+ /* ALTER TABLE <name> SPLIT PARTITION <partition_name> INTO () */
+ | SPLIT PARTITION qualified_name INTO '(' partitions_list ')'
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_SplitPartition;
+ cmd->name = $3;
+ cmd->bound = NULL;
+ cmd->partlist = $6;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
/* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
| MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
{
@@ -17595,6 +17629,7 @@ unreserved_keyword:
| SIMPLE
| SKIP
| SNAPSHOT
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
@@ -18226,6 +18261,7 @@ bare_label_keyword:
| SMALLINT
| SNAPSHOT
| SOME
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index 48a23c7ca4..88a4a41186 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -136,7 +136,7 @@ static void transformConstraintAttrs(CreateStmtContext *cxt,
List *constraintList);
static void transformColumnType(CreateStmtContext *cxt, ColumnDef *column);
static void setSchemaName(const char *context_schema, char **stmt_schema_name);
-static void transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd);
+static void transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound);
static List *transformPartitionRangeBounds(ParseState *pstate, List *blist,
Relation parent);
static void validateInfiniteBounds(ParseState *pstate, List *blist);
@@ -3415,6 +3415,43 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForSplit
+ * Analyze the ALTER TABLLE ... SPLIT PARTITION command
+ *
+ * For each new partition sps->bound is set to the transformed value of bound.
+ * Does checks for bounds of new partitions.
+ */
+static void
+transformPartitionCmdForSplit(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Relation parent = cxt->rel;
+ Oid splitPartOid;
+ ListCell *listptr;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ /* Transform partition bounds for all partitions in the list: */
+ foreach(listptr, partcmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ cxt->partbound = NULL;
+ transformPartitionCmd(cxt, sps->bound);
+ /* Assign transformed value of the partition bound. */
+ sps->bound = cxt->partbound;
+ }
+
+ splitPartOid = RangeVarGetRelid(partcmd->name, NoLock, false);
+
+ /* Then we should check partitions with transformed bounds. */
+ check_partitions_for_split(parent, splitPartOid, partcmd->name, partcmd->partlist, cxt->pstate);
+}
+
+
/*
* transformPartitionCmdForMerge
* Analyze the ALTER TABLLE ... MERGE PARTITIONS command
@@ -3751,7 +3788,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
- transformPartitionCmd(&cxt, partcmd);
+ transformPartitionCmd(&cxt, partcmd->bound);
/* assign transformed value of the partition bound */
partcmd->bound = cxt.partbound;
}
@@ -3759,6 +3796,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_SplitPartition:
case AT_MergePartitions:
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
@@ -3767,7 +3805,11 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("list of new partitions should contains at least two items")));
- transformPartitionCmdForMerge(&cxt, partcmd);
+
+ if (cmd->subtype == AT_SplitPartition)
+ transformPartitionCmdForSplit(&cxt, partcmd);
+ else
+ transformPartitionCmdForMerge(&cxt, partcmd);
newcmds = lappend(newcmds, cmd);
break;
}
@@ -4172,13 +4214,13 @@ setSchemaName(const char *context_schema, char **stmt_schema_name)
/*
* transformPartitionCmd
- * Analyze the ATTACH/DETACH PARTITION command
+ * Analyze the ATTACH/DETACH/SPLIT PARTITION command
*
- * In case of the ATTACH PARTITION command, cxt->partbound is set to the
- * transformed value of cmd->bound.
+ * In case of the ATTACH/SPLIT PARTITION command, cxt->partbound is set to the
+ * transformed value of bound.
*/
static void
-transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
+transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound)
{
Relation parentRel = cxt->rel;
@@ -4187,9 +4229,9 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
case RELKIND_PARTITIONED_TABLE:
/* transform the partition bound, if any */
Assert(RelationGetPartitionKey(parentRel) != NULL);
- if (cmd->bound != NULL)
+ if (bound != NULL)
cxt->partbound = transformPartitionBound(cxt->pstate, parentRel,
- cmd->bound);
+ bound);
break;
case RELKIND_PARTITIONED_INDEX:
@@ -4197,7 +4239,7 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
* A partitioned index cannot have a partition bound set. ALTER
* INDEX prevents that with its grammar, but not ALTER TABLE.
*/
- if (cmd->bound != NULL)
+ if (bound != NULL)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("\"%s\" is not a partitioned table",
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index 9ed80d721e..c36e26ba4b 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -5040,10 +5040,69 @@ check_two_partitions_bounds_range(Relation parent,
}
}
+/*
+ * check_partitions_not_overlap_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * This is a helper function for check_partitions_for_split().
+ * Checks that the values of the new partitions do not overlap.
+ *
+ * parent: partitioned table
+ * parts: array of SinglePartitionSpec structs with info about split partitions
+ * nparts: size of array "parts"
+ */
+static void
+check_partitions_not_overlap_list(Relation parent,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key PG_USED_FOR_ASSERTS_ONLY = RelationGetPartitionKey(parent);
+ int overlap_location = -1;
+ int i,
+ j;
+ SinglePartitionSpec *sps1,
+ *sps2;
+ List *overlap;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ for (i = 0; i < nparts; i++)
+ {
+ sps1 = parts[i];
+
+ for (j = i + 1; j < nparts; j++)
+ {
+ sps2 = parts[j];
+
+ /*
+ * Calculate intersection between values of two partitions.
+ */
+ overlap = list_intersection(sps1->bound->listdatums,
+ sps2->bound->listdatums);
+ if (list_length(overlap) > 0)
+ {
+ Const *val = (Const *) lfirst(list_head(overlap));
+
+ overlap_location = val->location;
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another new partition \"%s\"",
+ sps1->name->relname, sps2->name->relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ }
+ }
+}
+
/*
* get_partition_bound_spec
*
* Returns description of partition with Oid "partOid" and name "name".
+ *
+ * partOid: partition Oid
+ * name: partition name
*/
static PartitionBoundSpec *
get_partition_bound_spec(Oid partOid, RangeVar *name)
@@ -5076,6 +5135,604 @@ get_partition_bound_spec(Oid partOid, RangeVar *name)
return boundspec;
}
+/*
+ * check_partition_bounds_for_split_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * Checks that bounds of new partition "spec" is inside bounds of split
+ * partition (with Oid splitPartOid). If first=true (this means that "spec" is
+ * the first of new partitions) then lower bound of "spec" should be equal (or
+ * greater than or equal in case defaultPart=true) to lower bound of split
+ * partition. If last=true (this means that "spec" is the last of new
+ * partitions) then upper bound of of "spec" should be equal (or less than or
+ * equal in case defaultPart=true) to upper bound of split partition.
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * first: true in case new partition "spec" is first of new partitions
+ * last: true in case new partition "spec" is last of new partitions
+ * defaultPart: true in case partitioned table has DEFAULT partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_range(Relation parent,
+ char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ bool first,
+ bool last,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *lower,
+ *upper;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+ Assert(spec->strategy == PARTITION_STRATEGY_RANGE);
+
+ lower = make_one_partition_rbound(key, -1, spec->lowerdatums, true);
+ upper = make_one_partition_rbound(key, -1, spec->upperdatums, false);
+
+ /*
+ * First check if the resulting range would be empty with specified lower
+ * and upper bounds. partition_rbound_cmp cannot return zero here, since
+ * the lower-bound flags are different.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, upper);
+ Assert(cmpval != 0);
+ if (cmpval > 0)
+ {
+ /* Point to problematic key in the lower datums list. */
+ PartitionRangeDatum *datum = list_nth(spec->lowerdatums, cmpval - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("empty range bound specified for partition \"%s\"",
+ relname),
+ errdetail("Specified lower bound %s is greater than or equal to upper bound %s.",
+ get_range_partbound_string(spec->lowerdatums),
+ get_range_partbound_string(spec->upperdatums)),
+ parser_errposition(pstate, datum->location)));
+ }
+
+ /* Need to check first and last partitions (from set of new partitions) */
+ if (first || last)
+ {
+ PartitionBoundSpec *split_spec = get_partition_bound_spec(splitPartOid, splitPartName);
+ bool overlap = false;
+
+ if (first)
+ {
+ PartitionRangeBound *split_lower;
+
+ split_lower = make_one_partition_rbound(key, -1, split_spec->lowerdatums, true);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, split_lower);
+
+ /*
+ * Lower bound of "spec" should be equal (or greater than or equal
+ * in case defaultPart=true) to lower bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ overlap = true;
+ }
+ else
+ {
+ PartitionRangeBound *split_upper;
+
+ split_upper = make_one_partition_rbound(key, -1, split_spec->upperdatums, false);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ upper->datums, upper->kind,
+ false, split_upper);
+
+ /*
+ * Upper bound of of "spec" should be equal (or less than or equal
+ * in case defaultPart=true) to upper bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval > 0))
+ overlap = true;
+ }
+
+ if (overlap)
+ {
+ PartitionRangeDatum *datum;
+
+ datum = list_nth(first ? spec->lowerdatums : spec->upperdatums, abs(cmpval) - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("%s bound of partition \"%s\" is %s %s bound of split partition",
+ first ? "lower" : "upper",
+ relname,
+ defaultPart ? (first ? "less than" : "greater than") : "not equals to",
+ first ? "lower" : "upper"),
+ parser_errposition(pstate, datum->location)));
+ }
+ }
+}
+
+/*
+ * check_partition_bounds_for_split_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that bounds of new partition is inside bounds of split partition
+ * (with Oid splitPartOid).
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_list(Relation parent, char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int with = -1;
+ bool overlap = false;
+ int overlap_location = -1;
+ ListCell *cell;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+ Assert(spec->strategy == PARTITION_STRATEGY_LIST);
+ Assert(boundinfo && boundinfo->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Search each value of new partition "spec" in existing partitions. All
+ * of them should be in split partition (with Oid splitPartOid).
+ */
+ foreach(cell, spec->listdatums)
+ {
+ Const *val = lfirst_node(Const, cell);
+
+ overlap_location = val->location;
+ if (!val->constisnull)
+ {
+ int offset;
+ bool equal;
+
+ offset = partition_list_bsearch(&key->partsupfunc[0],
+ key->partcollation,
+ boundinfo,
+ val->constvalue,
+ &equal);
+ if (offset >= 0 && equal)
+ {
+ with = boundinfo->indexes[offset];
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have this value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ else if (partition_bound_accepts_nulls(boundinfo))
+ {
+ with = boundinfo->null_index;
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have NULL value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+
+ if (overlap)
+ {
+ Assert(with >= 0);
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another (not split) partition \"%s\"",
+ relname, get_rel_name(partdesc->oids[with])),
+ parser_errposition(pstate, overlap_location)));
+ }
+}
+
+/*
+ * find_value_in_new_partitions_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Function returns true in case any of new partitions contains value "value".
+ *
+ * partsupfunc: information about comparison function associated with the partition key
+ * partcollation: partitioning collation
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * value: the value that we are looking for
+ * isnull: true if the value that we are looking for is NULL
+ */
+static bool
+find_value_in_new_partitions_list(FmgrInfo *partsupfunc,
+ Oid *partcollation,
+ SinglePartitionSpec **parts,
+ int nparts,
+ Datum value,
+ bool isnull)
+{
+ ListCell *valptr;
+ int i;
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = parts[i];
+
+ foreach(valptr, sps->bound->listdatums)
+ {
+ Const *val = lfirst_node(Const, valptr);
+
+ if (isnull && val->constisnull)
+ return true;
+
+ if (!isnull && !val->constisnull)
+ {
+ if (DatumGetInt32(FunctionCall2Coll(&partsupfunc[0],
+ partcollation[0],
+ val->constvalue,
+ value)) == 0)
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/*
+ * check_parent_values_in_new_partitions
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that all values of split partition (with Oid partOid) contains in new
+ * partitions.
+ *
+ * parent: partitioned table
+ * partOid: split partition Oid
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_parent_values_in_new_partitions(Relation parent,
+ Oid partOid,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int i;
+ bool found = true;
+ bool searchNull = false;
+ Datum datum = PointerGetDatum(NULL);
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Special processing for NULL value. Search NULL-value if it contains
+ * split partition (partOid).
+ */
+ if (partition_bound_accepts_nulls(boundinfo) &&
+ partdesc->oids[boundinfo->null_index] == partOid)
+ {
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, true))
+ {
+ found = false;
+ searchNull = true;
+ }
+ }
+
+ /*
+ * Search all values of split partition with partOid in PartitionDesc of
+ * partitionde table.
+ */
+ for (i = 0; i < boundinfo->ndatums; i++)
+ {
+ if (partdesc->oids[boundinfo->indexes[i]] == partOid)
+ {
+ /* We found value that split partition contains. */
+ datum = boundinfo->datums[i][0];
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, false))
+ {
+ found = false;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ {
+ Const *notFoundVal;
+
+ if (!searchNull)
+ /* Make Const for get string representation of not found value. */
+ notFoundVal = makeConst(key->parttypid[0],
+ key->parttypmod[0],
+ key->parttypcoll[0],
+ key->parttyplen[0],
+ datum,
+ false, /* isnull */
+ key->parttypbyval[0]);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partitions not have value %s but split partition has",
+ searchNull ? "NULL" : get_list_partvalue_string(notFoundVal))));
+ }
+}
+
+/*
+ * check_partitions_for_split
+ *
+ * Checks new partitions for SPLIT PARTITIONS command:
+ * 1. DEFAULT partition should be one.
+ * 2. New partitions should have different names
+ * (with existing partitions too).
+ * 3. Bounds of new partitions should not overlap with new and existing
+ * partitions.
+ * 4. In case split partition is DEFAULT partition, one of new partitions
+ * should be DEFAULT.
+ * 5. In case new partitions or existing partitions contains DEFAULT
+ * partition, new partitions can have any bounds inside split
+ * partition bound (can be spaces between partitions bounds).
+ * 6. In case partitioned table does not have DEFAULT partition, DEFAULT
+ * partition can be defined as one of new partition.
+ * 7. In case new partitions not contains DEFAULT partition and
+ * partitioned table does not have DEFAULT partition the following
+ * should be true: sum bounds of new partitions should be equal
+ * to bound of split partition.
+ *
+ * parent: partitioned table
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * list: list of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate)
+{
+ PartitionKey key;
+ char strategy;
+ Oid defaultPartOid;
+ bool isSplitPartDefault;
+ bool existsDefaultPart;
+ ListCell *listptr;
+ int default_index = -1;
+ int i,
+ j;
+ SinglePartitionSpec **new_parts;
+ SinglePartitionSpec *spsPrev = NULL;
+ int nparts = 0;
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ switch (strategy)
+ {
+ case PARTITION_STRATEGY_LIST:
+ case PARTITION_STRATEGY_RANGE:
+ {
+ /*
+ * Make array new_parts with new partitions except DEFAULT
+ * partition.
+ */
+ new_parts = (SinglePartitionSpec **)
+ palloc0(list_length(partlist) * sizeof(SinglePartitionSpec *));
+ i = 0;
+ foreach(listptr, partlist)
+ {
+ SinglePartitionSpec *sps =
+ (SinglePartitionSpec *) lfirst(listptr);
+
+ if (sps->bound->is_default)
+ {
+ if (default_index >= 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("DEFAULT partition should be one")),
+ parser_errposition(pstate, sps->name->location));
+ default_index = i;
+ }
+ else
+ {
+ new_parts[nparts++] = sps;
+ }
+ i++;
+ }
+ }
+ break;
+
+ case PARTITION_STRATEGY_HASH:
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be split")));
+ break;
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ break;
+ }
+
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ PartitionRangeBound **lower_bounds;
+ SinglePartitionSpec **tmp_new_parts;
+
+ /*
+ * For simplify check for ranges of new partitions need to sort all
+ * partitions in ascending order of them bounds (we compare upper
+ * bound only).
+ */
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /* Create array of lower bounds. */
+ for (i = 0; i < nparts; i++)
+ {
+ lower_bounds[i] = make_one_partition_rbound(key, i,
+ new_parts[i]->bound->lowerdatums, true);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Reorder array of partitions. */
+ tmp_new_parts = new_parts;
+ new_parts = (SinglePartitionSpec **)
+ palloc0(nparts * sizeof(SinglePartitionSpec *));
+ for (i = 0; i < nparts; i++)
+ new_parts[i] = tmp_new_parts[lower_bounds[i]->index];
+
+ pfree(tmp_new_parts);
+ pfree(lower_bounds);
+ }
+
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(parent, true));
+
+ /* isSplitPartDefault flag: is split partition a DEFAULT partition? */
+ isSplitPartDefault = (defaultPartOid == splitPartOid);
+
+ if (isSplitPartDefault && default_index < 0)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("any partition in the list should be DEFAULT because split partition is DEFAULT")),
+ parser_errposition(pstate, ((SinglePartitionSpec *) linitial(partlist))->name->location));
+ }
+ else if (!isSplitPartDefault && (default_index >= 0) && OidIsValid(defaultPartOid))
+ {
+ SinglePartitionSpec *spsDef =
+ (SinglePartitionSpec *) list_nth(partlist, default_index);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition cannot be DEFAULT because DEFAULT partition already exists")),
+ parser_errposition(pstate, spsDef->name->location));
+ }
+
+ /* Indicator that partitioned table has (or will have) DEFAULT partition */
+ existsDefaultPart = OidIsValid(defaultPartOid) || (default_index >= 0);
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = new_parts[i];
+
+ if (isSplitPartDefault)
+ {
+ /*
+ * In case split partition is DEFAULT partition we can use any
+ * free ranges - as when creating a new partition.
+ */
+ check_new_partition_bound(sps->name->relname, parent, sps->bound,
+ pstate);
+ }
+ else
+ {
+ /*
+ * Checks that bound of current partition is inside bound of split
+ * partition. For range partitioning: checks that upper bound of
+ * previous partition is equal to lower bound of current
+ * partition. For list partitioning: checks that split partition
+ * contains all values of current partition.
+ */
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ bool first = (i == 0);
+ bool last = (i == (nparts - 1));
+
+ check_partition_bounds_for_split_range(parent, sps->name->relname, sps->bound,
+ splitPartOid, splitPartName,
+ first, last,
+ existsDefaultPart, pstate);
+ }
+ else
+ check_partition_bounds_for_split_list(parent, sps->name->relname,
+ sps->bound, splitPartOid, pstate);
+ }
+
+ /* Ranges of new partitions should not overlap. */
+ if (strategy == PARTITION_STRATEGY_RANGE && spsPrev)
+ check_two_partitions_bounds_range(parent, spsPrev->name, spsPrev->bound,
+ sps->name, sps->bound, existsDefaultPart, pstate);
+
+ spsPrev = sps;
+
+ /* Check: new partitions should have different names. */
+ for (j = i + 1; j < nparts; j++)
+ {
+ SinglePartitionSpec *sps2 = new_parts[j];
+
+ if (equal(sps->name, sps2->name))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("name \"%s\" already used", sps2->name->relname)),
+ parser_errposition(pstate, sps2->name->location));
+ }
+ }
+
+ if (strategy == PARTITION_STRATEGY_LIST)
+ {
+ /* Values of new partitions should not overlap. */
+ check_partitions_not_overlap_list(parent, new_parts, nparts,
+ pstate);
+
+ /*
+ * Need to check that all values of split partition contains in new
+ * partitions. Skip this check if DEFAULT partition exists.
+ */
+ if (!existsDefaultPart)
+ check_parent_values_in_new_partitions(parent, splitPartOid,
+ new_parts, nparts, pstate);
+ }
+
+ pfree(new_parts);
+}
+
/*
* calculate_partition_bound_for_merge
*
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index a51717e36c..65d6424156 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -13029,3 +13029,21 @@ get_range_partbound_string(List *bound_datums)
return buf->data;
}
+
+/*
+ * get_list_partvalue_string
+ * A C string representation of one list partition value
+ */
+char *
+get_list_partvalue_string(Const *val)
+{
+ deparse_context context;
+ StringInfo buf = makeStringInfo();
+
+ memset(&context, 0, sizeof(deparse_context));
+ context.buf = buf;
+
+ get_const_expr(val, &context, -1);
+
+ return buf->data;
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 27c28139c8..03c1f27053 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -2344,6 +2344,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_SplitPartition, /* SPLIT PARTITION */
AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index e2b4700d97..480896e7b6 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -415,6 +415,7 @@ PG_KEYWORD("skip", SKIP, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("smallint", SMALLINT, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("snapshot", SNAPSHOT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("some", SOME, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("split", SPLIT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("sql", SQL_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("stable", STABLE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("standalone", STANDALONE_P, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 0329d7bd84..9d2a26705f 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,6 +143,11 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate);
extern void calculate_partition_bound_for_merge(Relation parent,
List *partNames,
List *partOids,
diff --git a/src/include/utils/ruleutils.h b/src/include/utils/ruleutils.h
index 161fb5ef02..6d86080622 100644
--- a/src/include/utils/ruleutils.h
+++ b/src/include/utils/ruleutils.h
@@ -49,4 +49,6 @@ extern char *get_range_partbound_string(List *bound_datums);
extern char *pg_get_statisticsobjdef_string(Oid statextid);
+extern char *get_list_partvalue_string(Const *val);
+
#endif /* RULEUTILS_H */
diff --git a/src/test/isolation/expected/partition-split.out b/src/test/isolation/expected/partition-split.out
new file mode 100644
index 0000000000..5d9e8b0925
--- /dev/null
+++ b/src/test/isolation/expected/partition-split.out
@@ -0,0 +1,190 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s1b s1splt s2b s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2brr s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2bs s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2b s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2brr s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2bs s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2b s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2brr s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2bs s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 8bcaa8a625..0342eb39e4 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -104,6 +104,7 @@ test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
test: partition-merge
+test: partition-split
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-split.spec b/src/test/isolation/specs/partition-split.spec
new file mode 100644
index 0000000000..087239a4a1
--- /dev/null
+++ b/src/test/isolation/specs/partition-split.spec
@@ -0,0 +1,54 @@
+# Verify that SPLIT operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1splt { ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20)); }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s1 starts SPLIT PARTITION then s2 trying to insert row and
+# waits until s1 finished SPLIT operation.
+
+permutation s1b s1splt s2b s2i s1c s2c s2s
+permutation s1b s1splt s2brr s2i s1c s2c s2s
+permutation s1b s1splt s2bs s2i s1c s2c s2s
+
+permutation s1brr s1splt s2b s2i s1c s2c s2s
+permutation s1brr s1splt s2brr s2i s1c s2c s2s
+permutation s1brr s1splt s2bs s2i s1c s2c s2s
+
+permutation s1bs s1splt s2b s2i s1c s2c s2s
+permutation s1bs s1splt s2brr s2i s1c s2c s2s
+permutation s1bs s1splt s2bs s2i s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 69920757b2..265ef2a547 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_SplitPartition:
+ strtype = "SPLIT PARTITION";
+ break;
case AT_MergePartitions:
strtype = "MERGE PARTITIONS";
break;
diff --git a/src/test/regress/expected/partition_split.out b/src/test/regress/expected/partition_split.out
new file mode 100644
index 0000000000..7eb52f6fee
--- /dev/null
+++ b/src/test/regress/expected/partition_split.out
@@ -0,0 +1,1417 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_xxx" does not exist
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_jan2022" already exists
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: invalid bound specification for a range partition
+LINE 2: (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '202...
+ ^
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: empty range bound specified for partition "sales_mar2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+DETAIL: Specified lower bound ('03-01-2022') is greater than or equal to upper bound ('02-01-2022').
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+ERROR: list of new partitions should contains at least two items
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO...
+ ^
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb_mar_apr2022" already used
+LINE 3: PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03...
+ ^
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb2022" already used
+LINE 3: PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+LINE 4: ... sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-0...
+ ^
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_feb2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO...
+ ^
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO...
+ ^
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(4 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+ERROR: relation "sales_jan_feb2022" does not exist
+LINE 1: SELECT * FROM sales_jan_feb2022;
+ ^
+DROP TABLE sales_date CASCADE;
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 7 | Li | 175 | 03-08-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 11 | Trump | 380 | 04-06-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(11 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+-----------------------------+------------+----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx | | CREATE INDEX sales_others_sales_date_idx ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_feb2022 | sales_feb2022_sales_date_idx | | CREATE INDEX sales_feb2022_sales_date_idx ON partition_split_schema.sales_feb2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_mar2022 | sales_mar2022_sales_date_idx | | CREATE INDEX sales_mar2022_sales_date_idx ON partition_split_schema.sales_mar2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_apr2022 | sales_apr2022_sales_date_idx | | CREATE INDEX sales_apr2022_sales_date_idx ON partition_split_schema.sales_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+------------------------------+------------+-----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx1 | | CREATE INDEX sales_others_sales_date_idx1 ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211230) TO (2022...
+ ^
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+LINE 4: PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20...
+ ^
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211210) TO (2021...
+ ^
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211201) TO (2022...
+ ^
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+LINE 2: (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20...
+ ^
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_sales_amount_check"
+DETAIL: Failing row contains (1, 0, 03-11-2022).
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(-1) is not present in table "salesmans".
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(40) is not present in table "salesmans".
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+SELECT * FROM salesmans1_2;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans2_3;
+ salesman_id | salesman_name
+-------------+---------------
+ 2 | Ivanov
+(1 row)
+
+SELECT * FROM salesmans3_4;
+ salesman_id | salesman_name
+-------------+---------------
+ 3 | May
+(1 row)
+
+SELECT * FROM salesmans4_5;
+ salesman_id | salesman_name
+-------------+---------------
+ 4 | Ford
+(1 row)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+(2 rows)
+
+select * from salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+select * from salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_east" would overlap with another (not split) partition "sales_nord"
+LINE 3: ...ALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'...
+ ^
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+LINE 2: (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk...
+ ^
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+LINE 2: ...est FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ ^
+DROP TABLE sales_list;
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partitions not have value NULL but split partition has
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+ERROR: new partitions not have value 'Volgograd' but split partition has
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_west;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+(4 rows)
+
+SELECT * FROM sales_east;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+(2 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_central;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(4 rows)
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 026e7a7767..7cd4deda9b 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_split partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_split.sql b/src/test/regress/sql/partition_split.sql
new file mode 100644
index 0000000000..40c71889b6
--- /dev/null
+++ b/src/test/regress/sql/partition_split.sql
@@ -0,0 +1,833 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+
+DROP TABLE sales_date CASCADE;
+
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_others;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+
+SELECT * FROM salesmans1_2;
+SELECT * FROM salesmans2_3;
+SELECT * FROM salesmans3_4;
+SELECT * FROM salesmans4_5;
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+select * from salesmans01_10;
+select * from salesmans10_20;
+select * from salesmans20_30;
+select * from salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+DROP TABLE sales_list;
+
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_west;
+SELECT * FROM sales_east;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_central;
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index aa3025676f..877c1101f2 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2666,6 +2666,7 @@ SpecialJoinInfo
SpinDelayStatus
SplitInterval
SplitLR
+SplitPartitionContext
SplitPageLayout
SplitPoint
SplitTextOutputData
--
2.40.1.windows.1
From 1b31a961b0aff84aa80f85a0ef00498ea1176ac6 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Tue, 28 Mar 2023 10:50:19 +0300
Subject: [PATCH v28 3/3] Documentation for ALTER TABLE SPLIT PARTITION/MERGE
PARTITIONS commands
---
doc/src/sgml/ref/alter_table.sgml | 138 +++++++++++++++++++++++++++++-
1 file changed, 135 insertions(+), 3 deletions(-)
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 6cdcd779ef..945228d84b 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,13 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO
+ (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT },
+ PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
+ INTO <replaceable class="parameter">partition_name</replaceable>
<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>
@@ -1118,14 +1125,113 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-split-partition">
+ <term><literal>SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }, PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])</literal></term>
+
+ <listitem>
+ <para>
+ This form splits a single partition of the target table. Hash-partitioning
+ is not supported. Bounds of new partitions should not overlap with new and
+ existing partitions (except <replaceable class="parameter">partition_name</replaceable>).
+ If the split partition is a DEFAULT partition, one of the new partitions must be DEFAULT.
+ In case one of the new partitions or one of existing partitions is DEFAULT,
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have spaces
+ between partitions bounds. If the partitioned table does not have a DEFAULT
+ partition, the DEFAULT partition can be defined as one of the new partitions.
+ </para>
+ <para>
+ In case new partitions do not contain a DEFAULT partition and the partitioned table
+ does not have a DEFAULT partition, the following must be true: sum bounds of
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... should be
+ equal to bound of split partition <replaceable class="parameter">partition_name</replaceable>.
+ One of the new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have
+ the same name as split partition <replaceable class="parameter">partition_name</replaceable>
+ (this is suitable in case of splitting a DEFAULT partition: we split it, but after
+ splitting we have a partition with the same name).
+ Only simple, non-partitioned partition can be split.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="sql-altertable-merge-partitions">
+ <term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
+
+ <listitem>
+ <para>
+ This form merge several partitions into one partition of the target table.
+ Hash-partitioning is not supported. If DEFAULT partition is not in the
+ list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ For range-partitioned tables is necessary that the ranges
+ of the partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] can
+ be merged into one range without spaces and overlaps (otherwise an error
+ will be generated). The combined range will be the range for the partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For list-partitioned tables the values lists of all partitions
+ <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] are
+ combined and form a list of values of partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ If DEFAULT partition is in the list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ The partition <replaceable class="parameter">partition_name</replaceable>
+ will be the DEFAULT partition.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For range- and list-partitioned tables the ranges and lists of values
+ of the merged partitions can be any.
+ </para>
+ </listitem>
+ </itemizedlist>
+ The new partition <replaceable class="parameter">partition_name</replaceable>
+ can have the same name as one of the merged partitions. Only simple,
+ non-partitioned partitions can be merged.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
</variablelist>
</para>
<para>
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
- <literal>ATTACH PARTITION</literal>, and
- <literal>DETACH PARTITION</literal> can be combined into
+ <literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
+ <literal>SPLIT PARTITION</literal>, and <literal>MERGE PARTITIONS</literal>
+ can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1368,7 +1474,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<term><replaceable class="parameter">partition_name</replaceable></term>
<listitem>
<para>
- The name of the table to attach as a new partition or to detach from this table.
+ The name of the table to attach as a new partition or to detach from this table,
+ or the name of split partition, or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1784,6 +1891,31 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To split a single partition of the range-partitioned table:
+<programlisting>
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2023 INTO
+ (PARTITION sales_feb2023 FOR VALUES FROM ('2023-02-01') TO ('2023-03-01'),
+ PARTITION sales_mar2023 FOR VALUES FROM ('2023-03-01') TO ('2023-04-01'),
+ PARTITION sales_apr2023 FOR VALUES FROM ('2023-04-01') TO ('2023-05-01'));
+</programlisting></para>
+
+ <para>
+ To split a single partition of the list-partitioned table:
+<programlisting>
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+</programlisting></para>
+
+ <para>
+ To merge several partitions into one partition of the target table:
+<programlisting>
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central)
+ INTO sales_all;
+</programlisting></para>
+
</refsect1>
<refsect1>
--
2.40.1.windows.1
Attachments:
[text/plain] v28-0001-ALTER-TABLE-MERGE-PARTITIONS-command.patch (105.0K, ../../[email protected]/2-v28-0001-ALTER-TABLE-MERGE-PARTITIONS-command.patch)
download | inline diff:
From 873ddc54de176590efdd61121355f850359cfd1a Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 16:06:03 +0300
Subject: [PATCH v28 1/3] ALTER TABLE MERGE PARTITIONS command
---
src/backend/commands/tablecmds.c | 348 ++++++++-
src/backend/parser/gram.y | 22 +-
src/backend/parser/parse_utilcmd.c | 89 +++
src/backend/partitioning/partbounds.c | 207 +++++
src/include/nodes/parsenodes.h | 14 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 6 +
.../isolation/expected/partition-merge.out | 199 +++++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-merge.spec | 54 ++
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_merge.out | 736 ++++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_merge.sql | 434 +++++++++++
src/tools/pgindent/typedefs.list | 1 +
15 files changed, 2098 insertions(+), 19 deletions(-)
create mode 100644 src/test/isolation/expected/partition-merge.out
create mode 100644 src/test/isolation/specs/partition-merge.spec
create mode 100644 src/test/regress/expected/partition_merge.out
create mode 100644 src/test/regress/sql/partition_merge.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 6741e721ae..61ed046102 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,8 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context);
/* ----------------------------------------------------------------
* DefineRelation
@@ -4738,6 +4740,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_MergePartitions:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5157,6 +5163,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_MergePartitions:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5554,6 +5565,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_MergePartitions:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecMergePartitions(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -6544,6 +6563,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_MergePartitions:
+ return "MERGE PARTITIONS";
case AT_AddIdentity:
return "ALTER COLUMN ... ADD IDENTITY";
case AT_SetIdentity:
@@ -19038,6 +19059,37 @@ QueuePartitionConstraintValidation(List **wqueue, Relation scanrel,
}
}
+/*
+ * attachPartitionTable: attach new partition to partitioned table
+ *
+ * wqueue: the ALTER TABLE work queue; can be NULL when not running as part
+ * of an ALTER TABLE sequence.
+ * rel: partitioned relation;
+ * attachrel: relation of attached partition;
+ * bound: bounds of attached relation.
+ */
+static void
+attachPartitionTable(List **wqueue, Relation rel, Relation attachrel, PartitionBoundSpec *bound)
+{
+ /* OK to create inheritance. Rest of the checks performed there */
+ CreateInheritance(attachrel, rel, true);
+
+ /* Update the pg_class entry. */
+ StorePartitionBound(attachrel, rel, bound);
+
+ /* Ensure there exists a correct set of indexes in the partition. */
+ AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
+
+ /* and triggers */
+ CloneRowTriggersToPartition(rel, attachrel);
+
+ /*
+ * Clone foreign key constraints. Callee is responsible for setting up
+ * for phase 3 constraint verification.
+ */
+ CloneForeignKeyConstraints(wqueue, rel, attachrel);
+}
+
/*
* ALTER TABLE <name> ATTACH PARTITION <partition-name> FOR VALUES
*
@@ -19240,23 +19292,8 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd,
check_new_partition_bound(RelationGetRelationName(attachrel), rel,
cmd->bound, pstate);
- /* OK to create inheritance. Rest of the checks performed there */
- CreateInheritance(attachrel, rel, true);
-
- /* Update the pg_class entry. */
- StorePartitionBound(attachrel, rel, cmd->bound);
-
- /* Ensure there exists a correct set of indexes in the partition. */
- AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
-
- /* and triggers */
- CloneRowTriggersToPartition(rel, attachrel);
-
- /*
- * Clone foreign key constraints. Callee is responsible for setting up
- * for phase 3 constraint verification.
- */
- CloneForeignKeyConstraints(wqueue, rel, attachrel);
+ /* Attach a new partition to the partitioned table. */
+ attachPartitionTable(wqueue, rel, attachrel, cmd->bound);
/*
* Generate partition constraint from the partition bound specification.
@@ -20810,3 +20847,280 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+
+/*
+ * createPartitionTable: create table for new partition with given name
+ * (newPartName) like table (modelRelName)
+ *
+ * Emulates command: CREATE TABLE <newPartName> (LIKE <modelRelName>
+ * INCLUDING ALL EXCLUDING INDEXES EXCLUDING IDENTITY)
+ */
+static void
+createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
+ AlterTableUtilityContext *context)
+{
+ CreateStmt *createStmt;
+ TableLikeClause *tlc;
+ PlannedStmt *wrapper;
+
+ createStmt = makeNode(CreateStmt);
+ createStmt->relation = newPartName;
+ createStmt->tableElts = NIL;
+ createStmt->inhRelations = NIL;
+ createStmt->constraints = NIL;
+ createStmt->options = NIL;
+ createStmt->oncommit = ONCOMMIT_NOOP;
+ createStmt->tablespacename = NULL;
+ createStmt->if_not_exists = false;
+
+ tlc = makeNode(TableLikeClause);
+ tlc->relation = modelRelName;
+
+ /*
+ * Indexes will be inherited on "attach new partitions" stage, after data
+ * moving.
+ */
+ tlc->options = CREATE_TABLE_LIKE_ALL & ~(CREATE_TABLE_LIKE_INDEXES | CREATE_TABLE_LIKE_IDENTITY);
+ tlc->relationOid = InvalidOid;
+ createStmt->tableElts = lappend(createStmt->tableElts, tlc);
+
+ /* Need to make a wrapper PlannedStmt. */
+ wrapper = makeNode(PlannedStmt);
+ wrapper->commandType = CMD_UTILITY;
+ wrapper->canSetTag = false;
+ wrapper->utilityStmt = (Node *) createStmt;
+ wrapper->stmt_location = context->pstmt->stmt_location;
+ wrapper->stmt_len = context->pstmt->stmt_len;
+
+ ProcessUtility(wrapper,
+ context->queryString,
+ false,
+ PROCESS_UTILITY_SUBCOMMAND,
+ NULL,
+ NULL,
+ None_Receiver,
+ NULL);
+}
+
+/*
+ * moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
+ * of the partitioned table (rel) and move rows into the new partition
+ * (newPartRel).
+ */
+static void
+moveMergedTablesRows(Relation rel, List *mergingPartitionsList,
+ Relation newPartRel)
+{
+ CommandId mycid;
+
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ ListCell *listptr;
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot;
+
+ mycid = GetCurrentCommandId(true);
+
+ /* Prepare a BulkInsertState for table_tuple_insert. */
+ bistate = GetBulkInsertState();
+
+ /* Create necessary tuple slot. */
+ dstslot = MakeSingleTupleTableSlot(RelationGetDescr(newPartRel),
+ table_slot_callbacks(newPartRel));
+ ExecStoreAllNullTuple(dstslot);
+
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+ TupleTableSlot *srcslot;
+ TupleConversionMap *tuple_map;
+ TableScanDesc scan;
+ Snapshot snapshot;
+
+ /* Create tuple slot for new partition. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(mergingPartition),
+ table_slot_callbacks(mergingPartition));
+
+ /*
+ * Map computing for moving attributes of merged partition to new
+ * partition.
+ */
+ tuple_map = convert_tuples_by_name(RelationGetDescr(mergingPartition),
+ RelationGetDescr(newPartRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(mergingPartition, snapshot, 0, NULL);
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ table_tuple_insert(newPartRel, insertslot, mycid, ti_options, bistate);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+ }
+
+ ExecDropSingleTupleTableSlot(dstslot);
+ FreeBulkInsertState(bistate);
+
+ table_finish_bulk_insert(newPartRel, ti_options);
+}
+
+/*
+ * ALTER TABLE <name> MERGE PARTITIONS <partition-list> INTO <partition-name>
+ */
+static void
+ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation newPartRel;
+ ListCell *listptr;
+ List *mergingPartitionsList = NIL;
+ Oid defaultPartOid;
+ RangeVar *mergePartName = cmd->name;
+ bool isSameName = false;
+
+ /*
+ * Lock all merged partitions, check them and create list with partitions
+ * contexts.
+ */
+ foreach(listptr, cmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+ Relation mergingPartition;
+
+ /*
+ * We are going to detach and remove this partition: need to use
+ * exclusive lock for prevent DML-queries to the partition.
+ */
+ mergingPartition = table_openrv(name, AccessExclusiveLock);
+
+ if (mergingPartition->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot merge non-table partition \"%s\"",
+ RelationGetRelationName(mergingPartition))));
+
+ /*
+ * Checking that two partitions have the same name was before, in
+ * function transformPartitionCmdForMerge().
+ */
+ if (equal(name, cmd->name))
+ {
+ /* One new partition can have the same name as merged partition. */
+ isSameName = true;
+ newPartRel = mergingPartition;
+ }
+ else
+ {
+ /* Store a next merging partition into the list. */
+ mergingPartitionsList = lappend(mergingPartitionsList,
+ mergingPartition);
+ }
+ }
+
+ /* Detach all merged partitions. */
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(mergingPartition, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, mergingPartition, false, defaultPartOid);
+ }
+
+ if (isSameName)
+ {
+ /* Detach partition that we re-use for merged partition. */
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(newPartRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, newPartRel, false, defaultPartOid);
+
+ /* Make these updates visible */
+ CommandCounterIncrement();
+ }
+ else
+ {
+ /* Create table for new partition, use partitioned table as model. */
+ createPartitionTable(mergePartName,
+ makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1),
+ context);
+
+ /*
+ * Open the new partition and acquire exclusive lock on it. This will
+ * stop all the operations with partitioned table. This might seem
+ * excessive, but this is the way we make sure nobody is planning
+ * queries involving merging partitions.
+ */
+ newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+ }
+
+ /* Copy data from merged partitions to new partition. */
+ moveMergedTablesRows(rel, mergingPartitionsList, newPartRel);
+
+ /*
+ * Attach a new partition to the partitioned table. wqueue = NULL:
+ * verification for each cloned constraint is not need.
+ */
+ attachPartitionTable(NULL, rel, newPartRel, cmd->bound);
+
+ /* Unlock and drop merged partitions. */
+ foreach(listptr, mergingPartitionsList)
+ {
+ ObjectAddress object;
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Get relation id before table_close() call. */
+ object.objectId = RelationGetRelid(mergingPartition);
+ object.classId = RelationRelationId;
+ object.objectSubId = 0;
+
+ /* Keep the lock until commit. */
+ table_close(mergingPartition, NoLock);
+
+ performDeletion(&object, DROP_RESTRICT, 0);
+ }
+ list_free(mergingPartitionsList);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+}
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index c1b0cff1c9..0d9d351b44 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -755,7 +755,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
ORDER ORDINALITY OTHERS OUT_P OUTER_P
OVER OVERLAPS OVERLAY OVERRIDING OWNED OWNER
- PARALLEL PARAMETER PARSER PARTIAL PARTITION PASSING PASSWORD
+ PARALLEL PARAMETER PARSER PARTIAL PARTITION PARTITIONS PASSING PASSWORD
PERIOD PLACING PLANS POLICY
POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
PRIOR PRIVILEGES PROCEDURAL PROCEDURE PROCEDURES PROGRAM PUBLICATION
@@ -2310,6 +2310,7 @@ partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = $4;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -2324,6 +2325,7 @@ partition_cmd:
n->subtype = AT_DetachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = $4;
n->def = (Node *) cmd;
@@ -2337,6 +2339,21 @@ partition_cmd:
n->subtype = AT_DetachPartitionFinalize;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
+ /* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
+ | MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_MergePartitions;
+ cmd->name = $7;
+ cmd->bound = NULL;
+ cmd->partlist = $4;
cmd->concurrent = false;
n->def = (Node *) cmd;
$$ = (Node *) n;
@@ -2353,6 +2370,7 @@ index_partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -17510,6 +17528,7 @@ unreserved_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
@@ -18128,6 +18147,7 @@ bare_label_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index c7efd8d8ce..48a23c7ca4 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -58,6 +58,8 @@
#include "parser/parse_type.h"
#include "parser/parse_utilcmd.h"
#include "parser/parser.h"
+#include "partitioning/partdesc.h"
+#include "partitioning/partbounds.h"
#include "rewrite/rewriteManip.h"
#include "utils/acl.h"
#include "utils/builtins.h"
@@ -3413,6 +3415,80 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForMerge
+ * Analyze the ALTER TABLLE ... MERGE PARTITIONS command
+ *
+ * Does simple checks for merged partitions. Calculates bound of result
+ * partition.
+ */
+static void
+transformPartitionCmdForMerge(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Oid defaultPartOid;
+ Oid partOid;
+ Relation parent = cxt->rel;
+ PartitionKey key;
+ char strategy;
+ ListCell *listptr,
+ *listptr2;
+ bool isDefaultPart = false;
+ List *partOids = NIL;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ if (strategy == PARTITION_STRATEGY_HASH)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be merged")));
+
+ /* Is current partition a DEFAULT partition? */
+ defaultPartOid = get_default_oid_from_partdesc(
+ RelationGetPartitionDesc(parent, true));
+
+ foreach(listptr, partcmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+
+ /* Partitions in the list should have different names. */
+ for_each_cell(listptr2, partcmd->partlist, lnext(partcmd->partlist, listptr))
+ {
+ RangeVar *name2 = (RangeVar *) lfirst(listptr2);
+
+ if (equal(name, name2))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("partition with name \"%s\" already used", name->relname)),
+ parser_errposition(cxt->pstate, name2->location));
+ }
+
+ /* Search DEFAULT partition in the list. */
+ partOid = RangeVarGetRelid(name, NoLock, false);
+ if (partOid == defaultPartOid)
+ isDefaultPart = true;
+ partOids = lappend_oid(partOids, partOid);
+ }
+
+ /* Allocate bound of result partition. */
+ Assert(partcmd->bound == NULL);
+ partcmd->bound = makeNode(PartitionBoundSpec);
+
+ /* Fill partition bound. */
+ partcmd->bound->strategy = strategy;
+ partcmd->bound->location = -1;
+ partcmd->bound->is_default = isDefaultPart;
+ if (!isDefaultPart)
+ calculate_partition_bound_for_merge(parent, partcmd->partlist,
+ partOids, partcmd->bound,
+ cxt->pstate);
+}
+
/*
* transformAlterTableStmt -
* parse analysis for ALTER TABLE
@@ -3683,6 +3759,19 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_MergePartitions:
+ {
+ PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
+
+ if (list_length(partcmd->partlist) < 2)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("list of new partitions should contains at least two items")));
+ transformPartitionCmdForMerge(&cxt, partcmd);
+ newcmds = lappend(newcmds, cmd);
+ break;
+ }
+
default:
/*
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index c28639d2e3..9ed80d721e 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -4977,3 +4977,210 @@ satisfies_hash_partition(PG_FUNCTION_ARGS)
PG_RETURN_BOOL(rowHash % modulus == remainder);
}
+
+/*
+ * check_two_partitions_bounds_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * This is a helper function for check_partitions_for_split() and
+ * calculate_partition_bound_for_merge().
+ * This function compares upper bound of first_bound and lower bound of
+ * second_bound. These bounds should be equals except case
+ * "defaultPart == true" (this means that one of split partitions is DEFAULT).
+ * In this case upper bound of first_bound can be less than lower bound of
+ * second_bound because space between of these bounds will be included in
+ * DEFAULT partition.
+ *
+ * parent: partitioned table
+ * first_name: name of first partition
+ * first_bound: bound of first partition
+ * second_name: name of second partition
+ * second_bound: bound of second partition
+ * defaultPart: true if one of split partitions is DEFAULT
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_two_partitions_bounds_range(Relation parent,
+ RangeVar *first_name,
+ PartitionBoundSpec *first_bound,
+ RangeVar *second_name,
+ PartitionBoundSpec *second_bound,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *first_upper;
+ PartitionRangeBound *second_lower;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+
+ first_upper = make_one_partition_rbound(key, -1, first_bound->upperdatums, false);
+ second_lower = make_one_partition_rbound(key, -1, second_bound->lowerdatums, true);
+
+ /*
+ * lower1=false (the second to last argument) for correct comparison lower
+ * and upper bounds.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ second_lower->datums, second_lower->kind,
+ false, first_upper);
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ {
+ PartitionRangeDatum *datum = linitial(second_bound->lowerdatums);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("lower bound of partition \"%s\" conflicts with upper bound of previous partition \"%s\"",
+ second_name->relname, first_name->relname),
+ parser_errposition(pstate, datum->location)));
+ }
+}
+
+/*
+ * get_partition_bound_spec
+ *
+ * Returns description of partition with Oid "partOid" and name "name".
+ */
+static PartitionBoundSpec *
+get_partition_bound_spec(Oid partOid, RangeVar *name)
+{
+ HeapTuple tuple;
+ Datum datum;
+ bool isnull;
+ PartitionBoundSpec *boundspec = NULL;
+
+ /* Try fetching the tuple from the catcache, for speed. */
+ tuple = SearchSysCache1(RELOID, partOid);
+ if (!HeapTupleIsValid(tuple))
+ elog(ERROR, "cache lookup failed for relation \"%s\"",
+ name->relname);
+
+ datum = SysCacheGetAttr(RELOID, tuple,
+ Anum_pg_class_relpartbound,
+ &isnull);
+ if (isnull)
+ elog(ERROR, "partition bound for relation \"%s\" is null",
+ name->relname);
+
+ boundspec = stringToNode(TextDatumGetCString(datum));
+
+ if (!IsA(boundspec, PartitionBoundSpec))
+ elog(ERROR, "expected PartitionBoundSpec for relation \"%s\"",
+ name->relname);
+
+ ReleaseSysCache(tuple);
+ return boundspec;
+}
+
+/*
+ * calculate_partition_bound_for_merge
+ *
+ * Calculates the bound of merged partition "spec" by using the bounds of
+ * partitions to be merged.
+ *
+ * parent: partitioned table
+ * partNames: names of partitions to be merged
+ * partOids: Oids of partitions to be merged
+ * spec (out): bounds specification of the merged partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionBoundSpec *bound;
+
+ Assert(!spec->is_default);
+
+ switch (key->strategy)
+ {
+ case PARTITION_STRATEGY_RANGE:
+ {
+ int i;
+ PartitionRangeBound **lower_bounds;
+ int nparts = list_length(partOids);
+ List *bounds = NIL;
+
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /*
+ * Create array of lower bounds and list of
+ * PartitionBoundSpec.
+ */
+ for (i = 0; i < nparts; i++)
+ {
+ bound = get_partition_bound_spec(list_nth_oid(partOids, i),
+ (RangeVar *) list_nth(partNames, i));
+
+ lower_bounds[i] = make_one_partition_rbound(key, i, bound->lowerdatums, true);
+ bounds = lappend(bounds, bound);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Ranges of partitions should not overlap. */
+ for (i = 1; i < nparts; i++)
+ {
+ int index = lower_bounds[i]->index;
+ int prev_index = lower_bounds[i - 1]->index;
+
+ check_two_partitions_bounds_range(parent,
+ (RangeVar *) list_nth(partNames, prev_index),
+ (PartitionBoundSpec *) list_nth(bounds, prev_index),
+ (RangeVar *) list_nth(partNames, index),
+ (PartitionBoundSpec *) list_nth(bounds, index),
+ false, pstate);
+ }
+
+ /*
+ * Lower bound of first partition is a lower bound of merged
+ * partition.
+ */
+ spec->lowerdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[0]->index))->lowerdatums;
+
+ /*
+ * Upper bound of last partition is a upper bound of merged
+ * partition.
+ */
+ spec->upperdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[nparts - 1]->index))->upperdatums;
+
+ pfree(lower_bounds);
+ list_free(bounds);
+ break;
+ }
+
+ case PARTITION_STRATEGY_LIST:
+ {
+ ListCell *listptr,
+ *listptr2;
+
+ /* Consolidate bounds for all partitions in the list. */
+ forboth(listptr, partOids, listptr2, partNames)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr2);
+ Oid curOid = lfirst_oid(listptr);
+
+ bound = get_partition_bound_spec(curOid, name);
+ spec->listdatums = list_concat(spec->listdatums, bound->listdatums);
+ }
+ break;
+ }
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ }
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index b89baef95d..27c28139c8 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -933,6 +933,17 @@ typedef struct PartitionRangeDatum
ParseLoc location; /* token location, or -1 if unknown */
} PartitionRangeDatum;
+/*
+ * PartitionDesc - info about single partition for ALTER TABLE SPLIT PARTITION command
+ */
+typedef struct SinglePartitionSpec
+{
+ NodeTag type;
+
+ RangeVar *name; /* name of partition */
+ PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+} SinglePartitionSpec;
+
/*
* PartitionCmd - info for ALTER TABLE/INDEX ATTACH/DETACH PARTITION commands
*/
@@ -941,6 +952,8 @@ typedef struct PartitionCmd
NodeTag type;
RangeVar *name; /* name of partition to attach/detach */
PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+ List *partlist; /* list of partitions, for SPLIT PARTITION
+ * command */
bool concurrent;
} PartitionCmd;
@@ -2331,6 +2344,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
AT_DropIdentity, /* DROP IDENTITY */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 57514d064b..e2b4700d97 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -333,6 +333,7 @@ PG_KEYWORD("parameter", PARAMETER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("parser", PARSER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partial", PARTIAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partition", PARTITION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("partitions", PARTITIONS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("passing", PASSING, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("password", PASSWORD, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("period", PERIOD, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 3d9cc1031f..0329d7bd84 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,4 +143,10 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate);
+
#endif /* PARTBOUNDS_H */
diff --git a/src/test/isolation/expected/partition-merge.out b/src/test/isolation/expected/partition-merge.out
new file mode 100644
index 0000000000..98446aaab5
--- /dev/null
+++ b/src/test/isolation/expected/partition-merge.out
@@ -0,0 +1,199 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 188fc04f85..8bcaa8a625 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -103,6 +103,7 @@ test: partition-key-update-1
test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
+test: partition-merge
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-merge.spec b/src/test/isolation/specs/partition-merge.spec
new file mode 100644
index 0000000000..ec48732c58
--- /dev/null
+++ b/src/test/isolation/specs/partition-merge.spec
@@ -0,0 +1,54 @@
+# Verify that MERGE operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1merg { ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20; }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2u { UPDATE tpart SET t = 'text01modif' where i = 1; }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s2 inserts row into table. s1 starts MERGE PARTITIONS then
+# s2 trying to update inserted row and waits until s1 finished
+# MERGE operation.
+
+permutation s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 48563b2cf0..69920757b2 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_MergePartitions:
+ strtype = "MERGE PARTITIONS";
+ break;
case AT_AddIdentity:
strtype = "ADD IDENTITY";
break;
diff --git a/src/test/regress/expected/partition_merge.out b/src/test/regress/expected/partition_merge.out
new file mode 100644
index 0000000000..b53df2703b
--- /dev/null
+++ b/src/test/regress/expected/partition_merge.out
@@ -0,0 +1,736 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+ERROR: partition with name "sales_feb2022" already used
+LINE 1: ...e MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2...
+ ^
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+ERROR: cannot merge non-table partition "sales_apr2022"
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_jan2022"
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+ERROR: lower bound of partition "sales_jan2022" conflicts with upper bound of previous partition "sales_dec2021"
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | p | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_dec2021 | r | f | FOR VALUES FROM ('12-01-2021') TO ('12-31-2021')
+ sales_jan_feb_mar2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+ pg_get_partkeydef
+--------------------
+ RANGE (sales_date)
+(1 row)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_mar2022 | r | f | FOR VALUES FROM ('03-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_feb_mar_apr2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('05-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+-------------------------+-----------------------+--------------------------------------+------------+-----------------------------------------------------------------------------------------------------------------------------
+ partitions_merge_schema | sales_feb_mar_apr2022 | sales_feb_mar_apr2022_sales_date_idx | | CREATE INDEX sales_feb_mar_apr2022_sales_date_idx ON partitions_merge_schema.sales_feb_mar_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb_mar_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(10 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(10 rows)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_range;
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+select * from sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(7 rows)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+(2 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(2 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(6 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+DROP TABLE sales_date;
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+select * from salesmans;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(6 rows)
+
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(5 rows)
+
+DROP TABLE salesmans;
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr_all;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+ERROR: partition bound for relation "sales_external" is null
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+ERROR: partition bound for relation "sales_external2" is null
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------------
+ sales_central | r | f | FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd')
+ sales_east | r | f | FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_west | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+--------------+---------+------------------+---------------------------------------------------------------------------------------------------------------------------
+ sales_all | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Khabarovsk', 'Vladivostok', 'Moscow', 'Kazan', 'Volgograd')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_all;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(10 rows)
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 5ac6e871f5..026e7a7767 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_merge.sql b/src/test/regress/sql/partition_merge.sql
new file mode 100644
index 0000000000..8bf90fd621
--- /dev/null
+++ b/src/test/regress/sql/partition_merge.sql
@@ -0,0 +1,434 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb_mar_apr2022;
+SELECT * FROM sales_others;
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_range;
+
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+
+select * from sales_others;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+DROP TABLE sales_date;
+
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+select * from salesmans;
+select * from salesmans01_10;
+select * from salesmans10_40;
+
+DROP TABLE salesmans;
+
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr_all;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+
+
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_all;
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index cfa9d5aaea..aa3025676f 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2602,6 +2602,7 @@ SimpleStats
SimpleStringList
SimpleStringListCell
SingleBoundSortItem
+SinglePartitionSpec
Size
SkipPages
SlabBlock
--
2.40.1.windows.1
[text/plain] v28-0002-ALTER-TABLE-SPLIT-PARTITION-command.patch (176.1K, ../../[email protected]/3-v28-0002-ALTER-TABLE-SPLIT-PARTITION-command.patch)
download | inline diff:
From 86a6f2b37e28fdcf4eff64701b1fdf77a51f3c52 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 17:58:52 +0300
Subject: [PATCH v28 2/3] ALTER TABLE SPLIT PARTITION command
---
src/backend/commands/tablecmds.c | 406 +++++
src/backend/parser/gram.y | 38 +-
src/backend/parser/parse_utilcmd.c | 62 +-
src/backend/partitioning/partbounds.c | 657 ++++++++
src/backend/utils/adt/ruleutils.c | 18 +
src/include/nodes/parsenodes.h | 1 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 5 +
src/include/utils/ruleutils.h | 2 +
.../isolation/expected/partition-split.out | 190 +++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-split.spec | 54 +
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_split.out | 1417 +++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_split.sql | 833 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
17 files changed, 3679 insertions(+), 12 deletions(-)
create mode 100644 src/test/isolation/expected/partition-split.out
create mode 100644 src/test/isolation/specs/partition-split.spec
create mode 100644 src/test/regress/expected/partition_split.out
create mode 100644 src/test/regress/sql/partition_split.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 61ed046102..e9ebb59d76 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,9 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab,
+ Relation rel, PartitionCmd *cmd,
+ AlterTableUtilityContext *context);
static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
PartitionCmd *cmd, AlterTableUtilityContext *context);
@@ -4740,6 +4743,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_SplitPartition:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
case AT_MergePartitions:
cmd_lockmode = AccessExclusiveLock;
break;
@@ -5163,6 +5170,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_SplitPartition:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
case AT_MergePartitions:
ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
/* No command-specific prep needed */
@@ -5565,6 +5577,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_SplitPartition:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecSplitPartition(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
case AT_MergePartitions:
cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
cur_pass, context);
@@ -6563,6 +6583,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_SplitPartition:
+ return "SPLIT PARTITION";
case AT_MergePartitions:
return "MERGE PARTITIONS";
case AT_AddIdentity:
@@ -20848,6 +20870,255 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+/*
+ * Struct with context of new partition for insert rows from splited partition
+ */
+typedef struct SplitPartitionContext
+{
+ ExprState *partqualstate; /* expression for check slot for partition
+ * (NULL for DEFAULT partition) */
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot; /* slot for insert row into partition */
+ Relation partRel; /* relation for partition */
+} SplitPartitionContext;
+
+
+/*
+ * createSplitPartitionContext: create context for partition and fill it
+ */
+static SplitPartitionContext *
+createSplitPartitionContext(Relation partRel)
+{
+ SplitPartitionContext *pc;
+
+ pc = (SplitPartitionContext *) palloc0(sizeof(SplitPartitionContext));
+ pc->partRel = partRel;
+
+ /*
+ * Prepare a BulkInsertState for table_tuple_insert. The FSM is empty, so
+ * don't bother using it.
+ */
+ pc->bistate = GetBulkInsertState();
+
+ /* Create tuple slot for new partition. */
+ pc->dstslot = MakeSingleTupleTableSlot(RelationGetDescr(pc->partRel),
+ table_slot_callbacks(pc->partRel));
+ ExecStoreAllNullTuple(pc->dstslot);
+
+ return pc;
+}
+
+/*
+ * deleteSplitPartitionContext: delete context for partition
+ */
+static void
+deleteSplitPartitionContext(SplitPartitionContext *pc, int ti_options)
+{
+ ExecDropSingleTupleTableSlot(pc->dstslot);
+ FreeBulkInsertState(pc->bistate);
+
+ table_finish_bulk_insert(pc->partRel, ti_options);
+
+ pfree(pc);
+}
+
+/*
+ * moveSplitTableRows: scan split partition (splitRel) of partitioned table
+ * (rel) and move rows into new partitions.
+ *
+ * New partitions description:
+ * partlist: list of pointers to SinglePartitionSpec structures.
+ * newPartRels: list of Relation's.
+ * defaultPartOid: oid of DEFAULT partition, for table rel.
+ */
+static void
+moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPartRels, Oid defaultPartOid)
+{
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ CommandId mycid;
+ EState *estate;
+ ListCell *listptr,
+ *listptr2;
+ TupleTableSlot *srcslot;
+ ExprContext *econtext;
+ TableScanDesc scan;
+ Snapshot snapshot;
+ MemoryContext oldCxt;
+ List *partContexts = NIL;
+ TupleConversionMap *tuple_map;
+ SplitPartitionContext *defaultPartCtx = NULL,
+ *pc;
+ bool isOldDefaultPart = false;
+
+ mycid = GetCurrentCommandId(true);
+
+ estate = CreateExecutorState();
+
+ forboth(listptr, partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ pc = createSplitPartitionContext((Relation) lfirst(listptr2));
+
+ if (sps->bound->is_default)
+ {
+ /* We should not create constraint for detached DEFAULT partition. */
+ defaultPartCtx = pc;
+ }
+ else
+ {
+ List *partConstraint;
+
+ /* Build expression execution states for partition check quals. */
+ partConstraint = get_qual_from_partbound(rel, sps->bound);
+ partConstraint =
+ (List *) eval_const_expressions(NULL,
+ (Node *) partConstraint);
+ /* Make boolean expression for ExecCheck(). */
+ partConstraint = list_make1(make_ands_explicit(partConstraint));
+
+ /*
+ * Map the vars in the constraint expression from rel's attnos to
+ * splitRel's.
+ */
+ partConstraint = map_partition_varattnos(partConstraint,
+ 1, splitRel, rel);
+
+ pc->partqualstate =
+ ExecPrepareExpr((Expr *) linitial(partConstraint), estate);
+ Assert(pc->partqualstate != NULL);
+ }
+
+ /* Store partition context into list. */
+ partContexts = lappend(partContexts, pc);
+ }
+
+ /*
+ * Create partition context for DEFAULT partition. We can insert values
+ * into this partition in case spaces with values between new partitions.
+ */
+ if (!defaultPartCtx && OidIsValid(defaultPartOid))
+ {
+ /* Indicate that we allocate context for old DEFAULT partition */
+ isOldDefaultPart = true;
+ defaultPartCtx = createSplitPartitionContext(table_open(defaultPartOid, AccessExclusiveLock));
+ }
+
+ econtext = GetPerTupleExprContext(estate);
+
+ /* Create necessary tuple slot. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(splitRel),
+ table_slot_callbacks(splitRel));
+
+ /*
+ * Map computing for moving attributes of split partition to new partition
+ * (for first new partition but other new partitions can use the same
+ * map).
+ */
+ pc = (SplitPartitionContext *) lfirst(list_head(partContexts));
+ tuple_map = convert_tuples_by_name(RelationGetDescr(splitRel),
+ RelationGetDescr(pc->partRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(splitRel, snapshot, 0, NULL);
+
+ /*
+ * Switch to per-tuple memory context and reset it for each tuple
+ * produced, so we don't leak memory.
+ */
+ oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(estate));
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ bool found = false;
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ econtext->ecxt_scantuple = srcslot;
+
+ /* Search partition for current slot srcslot. */
+ foreach(listptr, partContexts)
+ {
+ pc = (SplitPartitionContext *) lfirst(listptr);
+
+ if (pc->partqualstate /* skip DEFAULT partition */ &&
+ ExecCheck(pc->partqualstate, econtext))
+ {
+ found = true;
+ break;
+ }
+ ResetExprContext(econtext);
+ }
+ if (!found)
+ {
+ /* Use DEFAULT partition if it exists. */
+ if (defaultPartCtx)
+ pc = defaultPartCtx;
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_CHECK_VIOLATION),
+ errmsg("can not find partition for split partition row"),
+ errtable(splitRel)));
+ }
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, pc->dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = pc->dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ table_tuple_insert(pc->partRel, insertslot, mycid, ti_options, pc->bistate);
+
+ ResetExprContext(econtext);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ MemoryContextSwitchTo(oldCxt);
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+
+ FreeExecutorState(estate);
+
+ foreach(listptr, partContexts)
+ deleteSplitPartitionContext((SplitPartitionContext *) lfirst(listptr), ti_options);
+
+ /* Need to close table and free buffers for DEFAULT partition. */
+ if (isOldDefaultPart)
+ {
+ Relation defaultPartRel = defaultPartCtx->partRel;
+
+ deleteSplitPartitionContext(defaultPartCtx, ti_options);
+ /* Keep the lock until commit. */
+ table_close(defaultPartRel, NoLock);
+ }
+}
+
/*
* createPartitionTable: create table for new partition with given name
* (newPartName) like table (modelRelName)
@@ -20902,6 +21173,141 @@ createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
NULL);
}
+/*
+ * ALTER TABLE <name> SPLIT PARTITION <partition-name> INTO <partition-list>
+ */
+static void
+ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation splitRel;
+ Oid splitRelOid;
+ char relname[NAMEDATALEN];
+ Oid namespaceId;
+ ListCell *listptr,
+ *listptr2;
+ bool isSameName = false;
+ char tmpRelName[NAMEDATALEN];
+ List *newPartRels = NIL;
+ ObjectAddress object;
+ RangeVar *parentName;
+ Oid defaultPartOid;
+
+ defaultPartOid = get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+
+ /*
+ * We are going to detach and remove this partition: need to use exclusive
+ * lock for prevent DML-queries to the partition.
+ */
+ splitRel = table_openrv(cmd->name, AccessExclusiveLock);
+
+ if (splitRel->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot split non-table partition \"%s\"",
+ RelationGetRelationName(splitRel))));
+
+ splitRelOid = RelationGetRelid(splitRel);
+
+ /* Check descriptions of new partitions. */
+ foreach(listptr, cmd->partlist)
+ {
+ Oid existing_relid;
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ strlcpy(relname, sps->name->relname, NAMEDATALEN);
+
+ /*
+ * Look up the namespace in which we are supposed to create the
+ * partition, check we have permission to create there, lock it
+ * against concurrent drop, and mark stmt->relation as
+ * RELPERSISTENCE_TEMP if a temporary namespace is selected.
+ */
+ namespaceId =
+ RangeVarGetAndCheckCreationNamespace(sps->name, NoLock, NULL);
+
+ /*
+ * This would fail later on anyway, if the relation already exists.
+ * But by catching it here we can emit a nicer error message.
+ */
+ existing_relid = get_relname_relid(relname, namespaceId);
+ if (existing_relid == splitRelOid && !isSameName)
+ /* One new partition can have the same name as split partition. */
+ isSameName = true;
+ else if (existing_relid != InvalidOid)
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("relation \"%s\" already exists", relname)));
+ }
+
+ /* Detach split partition. */
+ RemoveInheritance(splitRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, splitRel, false, defaultPartOid);
+
+ /*
+ * If new partition has the same name as split partition then we should
+ * rename split partition for reuse name.
+ */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ sprintf(tmpRelName, "split-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ RenameRelationInternal(splitRelOid, tmpRelName, false, false);
+
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible after rename.
+ */
+ CommandCounterIncrement();
+ }
+
+ /* Create new partitions (like split partition), without indexes. */
+ parentName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1);
+ foreach(listptr, cmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel;
+
+ createPartitionTable(sps->name, parentName, context);
+
+ /* Open the new partition and acquire exclusive lock on it. */
+ newPartRel = table_openrv(sps->name, AccessExclusiveLock);
+
+ newPartRels = lappend(newPartRels, newPartRel);
+ }
+
+ /* Copy data from split partition to new partitions. */
+ moveSplitTableRows(rel, splitRel, cmd->partlist, newPartRels, defaultPartOid);
+ /* Keep the lock until commit. */
+ table_close(splitRel, NoLock);
+
+ /* Attach new partitions to partitioned table. */
+ forboth(listptr, cmd->partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel = (Relation) lfirst(listptr2);
+
+ /* wqueue = NULL: verification for each cloned constraint is not need. */
+ attachPartitionTable(NULL, rel, newPartRel, sps->bound);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+ }
+
+ /* Drop split partition. */
+ object.classId = RelationRelationId;
+ object.objectId = splitRelOid;
+ object.objectSubId = 0;
+ /* Probably DROP_CASCADE is not needed. */
+ performDeletion(&object, DROP_RESTRICT, 0);
+}
+
/*
* moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
* of the partitioned table (rel) and move rows into the new partition
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 0d9d351b44..16d766786b 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -270,6 +270,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
PartitionElem *partelem;
PartitionSpec *partspec;
PartitionBoundSpec *partboundspec;
+ SinglePartitionSpec *singlepartspec;
RoleSpec *rolespec;
PublicationObjSpec *publicationobjectspec;
struct SelectLimit *selectlimit;
@@ -645,6 +646,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
%type <partelem> part_elem
%type <list> part_params
%type <partboundspec> PartitionBoundSpec
+%type <singlepartspec> SinglePartitionSpec
+%type <list> partitions_list
%type <list> hash_partbound
%type <defelt> hash_partbound_elem
@@ -770,7 +773,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
SAVEPOINT SCALAR SCHEMA SCHEMAS SCROLL SEARCH SECOND_P SECURITY SELECT
SEQUENCE SEQUENCES
SERIALIZABLE SERVER SESSION SESSION_USER SET SETS SETOF SHARE SHOW
- SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SQL_P STABLE STANDALONE_P
+ SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SPLIT SQL_P STABLE STANDALONE_P
START STATEMENT STATISTICS STDIN STDOUT STORAGE STORED STRICT_P STRING_P STRIP_P
SUBSCRIPTION SUBSTRING SUPPORT SYMMETRIC SYSID SYSTEM_P SYSTEM_USER
@@ -2300,6 +2303,23 @@ alter_table_cmds:
| alter_table_cmds ',' alter_table_cmd { $$ = lappend($1, $3); }
;
+partitions_list:
+ SinglePartitionSpec { $$ = list_make1($1); }
+ | partitions_list ',' SinglePartitionSpec { $$ = lappend($1, $3); }
+ ;
+
+SinglePartitionSpec:
+ PARTITION qualified_name PartitionBoundSpec
+ {
+ SinglePartitionSpec *n = makeNode(SinglePartitionSpec);
+
+ n->name = $2;
+ n->bound = $3;
+
+ $$ = n;
+ }
+ ;
+
partition_cmd:
/* ALTER TABLE <name> ATTACH PARTITION <table_name> FOR VALUES */
ATTACH PARTITION qualified_name PartitionBoundSpec
@@ -2344,6 +2364,20 @@ partition_cmd:
n->def = (Node *) cmd;
$$ = (Node *) n;
}
+ /* ALTER TABLE <name> SPLIT PARTITION <partition_name> INTO () */
+ | SPLIT PARTITION qualified_name INTO '(' partitions_list ')'
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_SplitPartition;
+ cmd->name = $3;
+ cmd->bound = NULL;
+ cmd->partlist = $6;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
/* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
| MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
{
@@ -17595,6 +17629,7 @@ unreserved_keyword:
| SIMPLE
| SKIP
| SNAPSHOT
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
@@ -18226,6 +18261,7 @@ bare_label_keyword:
| SMALLINT
| SNAPSHOT
| SOME
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index 48a23c7ca4..88a4a41186 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -136,7 +136,7 @@ static void transformConstraintAttrs(CreateStmtContext *cxt,
List *constraintList);
static void transformColumnType(CreateStmtContext *cxt, ColumnDef *column);
static void setSchemaName(const char *context_schema, char **stmt_schema_name);
-static void transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd);
+static void transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound);
static List *transformPartitionRangeBounds(ParseState *pstate, List *blist,
Relation parent);
static void validateInfiniteBounds(ParseState *pstate, List *blist);
@@ -3415,6 +3415,43 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForSplit
+ * Analyze the ALTER TABLLE ... SPLIT PARTITION command
+ *
+ * For each new partition sps->bound is set to the transformed value of bound.
+ * Does checks for bounds of new partitions.
+ */
+static void
+transformPartitionCmdForSplit(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Relation parent = cxt->rel;
+ Oid splitPartOid;
+ ListCell *listptr;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ /* Transform partition bounds for all partitions in the list: */
+ foreach(listptr, partcmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ cxt->partbound = NULL;
+ transformPartitionCmd(cxt, sps->bound);
+ /* Assign transformed value of the partition bound. */
+ sps->bound = cxt->partbound;
+ }
+
+ splitPartOid = RangeVarGetRelid(partcmd->name, NoLock, false);
+
+ /* Then we should check partitions with transformed bounds. */
+ check_partitions_for_split(parent, splitPartOid, partcmd->name, partcmd->partlist, cxt->pstate);
+}
+
+
/*
* transformPartitionCmdForMerge
* Analyze the ALTER TABLLE ... MERGE PARTITIONS command
@@ -3751,7 +3788,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
- transformPartitionCmd(&cxt, partcmd);
+ transformPartitionCmd(&cxt, partcmd->bound);
/* assign transformed value of the partition bound */
partcmd->bound = cxt.partbound;
}
@@ -3759,6 +3796,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_SplitPartition:
case AT_MergePartitions:
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
@@ -3767,7 +3805,11 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("list of new partitions should contains at least two items")));
- transformPartitionCmdForMerge(&cxt, partcmd);
+
+ if (cmd->subtype == AT_SplitPartition)
+ transformPartitionCmdForSplit(&cxt, partcmd);
+ else
+ transformPartitionCmdForMerge(&cxt, partcmd);
newcmds = lappend(newcmds, cmd);
break;
}
@@ -4172,13 +4214,13 @@ setSchemaName(const char *context_schema, char **stmt_schema_name)
/*
* transformPartitionCmd
- * Analyze the ATTACH/DETACH PARTITION command
+ * Analyze the ATTACH/DETACH/SPLIT PARTITION command
*
- * In case of the ATTACH PARTITION command, cxt->partbound is set to the
- * transformed value of cmd->bound.
+ * In case of the ATTACH/SPLIT PARTITION command, cxt->partbound is set to the
+ * transformed value of bound.
*/
static void
-transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
+transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound)
{
Relation parentRel = cxt->rel;
@@ -4187,9 +4229,9 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
case RELKIND_PARTITIONED_TABLE:
/* transform the partition bound, if any */
Assert(RelationGetPartitionKey(parentRel) != NULL);
- if (cmd->bound != NULL)
+ if (bound != NULL)
cxt->partbound = transformPartitionBound(cxt->pstate, parentRel,
- cmd->bound);
+ bound);
break;
case RELKIND_PARTITIONED_INDEX:
@@ -4197,7 +4239,7 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
* A partitioned index cannot have a partition bound set. ALTER
* INDEX prevents that with its grammar, but not ALTER TABLE.
*/
- if (cmd->bound != NULL)
+ if (bound != NULL)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("\"%s\" is not a partitioned table",
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index 9ed80d721e..c36e26ba4b 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -5040,10 +5040,69 @@ check_two_partitions_bounds_range(Relation parent,
}
}
+/*
+ * check_partitions_not_overlap_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * This is a helper function for check_partitions_for_split().
+ * Checks that the values of the new partitions do not overlap.
+ *
+ * parent: partitioned table
+ * parts: array of SinglePartitionSpec structs with info about split partitions
+ * nparts: size of array "parts"
+ */
+static void
+check_partitions_not_overlap_list(Relation parent,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key PG_USED_FOR_ASSERTS_ONLY = RelationGetPartitionKey(parent);
+ int overlap_location = -1;
+ int i,
+ j;
+ SinglePartitionSpec *sps1,
+ *sps2;
+ List *overlap;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ for (i = 0; i < nparts; i++)
+ {
+ sps1 = parts[i];
+
+ for (j = i + 1; j < nparts; j++)
+ {
+ sps2 = parts[j];
+
+ /*
+ * Calculate intersection between values of two partitions.
+ */
+ overlap = list_intersection(sps1->bound->listdatums,
+ sps2->bound->listdatums);
+ if (list_length(overlap) > 0)
+ {
+ Const *val = (Const *) lfirst(list_head(overlap));
+
+ overlap_location = val->location;
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another new partition \"%s\"",
+ sps1->name->relname, sps2->name->relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ }
+ }
+}
+
/*
* get_partition_bound_spec
*
* Returns description of partition with Oid "partOid" and name "name".
+ *
+ * partOid: partition Oid
+ * name: partition name
*/
static PartitionBoundSpec *
get_partition_bound_spec(Oid partOid, RangeVar *name)
@@ -5076,6 +5135,604 @@ get_partition_bound_spec(Oid partOid, RangeVar *name)
return boundspec;
}
+/*
+ * check_partition_bounds_for_split_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * Checks that bounds of new partition "spec" is inside bounds of split
+ * partition (with Oid splitPartOid). If first=true (this means that "spec" is
+ * the first of new partitions) then lower bound of "spec" should be equal (or
+ * greater than or equal in case defaultPart=true) to lower bound of split
+ * partition. If last=true (this means that "spec" is the last of new
+ * partitions) then upper bound of of "spec" should be equal (or less than or
+ * equal in case defaultPart=true) to upper bound of split partition.
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * first: true in case new partition "spec" is first of new partitions
+ * last: true in case new partition "spec" is last of new partitions
+ * defaultPart: true in case partitioned table has DEFAULT partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_range(Relation parent,
+ char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ bool first,
+ bool last,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *lower,
+ *upper;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+ Assert(spec->strategy == PARTITION_STRATEGY_RANGE);
+
+ lower = make_one_partition_rbound(key, -1, spec->lowerdatums, true);
+ upper = make_one_partition_rbound(key, -1, spec->upperdatums, false);
+
+ /*
+ * First check if the resulting range would be empty with specified lower
+ * and upper bounds. partition_rbound_cmp cannot return zero here, since
+ * the lower-bound flags are different.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, upper);
+ Assert(cmpval != 0);
+ if (cmpval > 0)
+ {
+ /* Point to problematic key in the lower datums list. */
+ PartitionRangeDatum *datum = list_nth(spec->lowerdatums, cmpval - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("empty range bound specified for partition \"%s\"",
+ relname),
+ errdetail("Specified lower bound %s is greater than or equal to upper bound %s.",
+ get_range_partbound_string(spec->lowerdatums),
+ get_range_partbound_string(spec->upperdatums)),
+ parser_errposition(pstate, datum->location)));
+ }
+
+ /* Need to check first and last partitions (from set of new partitions) */
+ if (first || last)
+ {
+ PartitionBoundSpec *split_spec = get_partition_bound_spec(splitPartOid, splitPartName);
+ bool overlap = false;
+
+ if (first)
+ {
+ PartitionRangeBound *split_lower;
+
+ split_lower = make_one_partition_rbound(key, -1, split_spec->lowerdatums, true);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, split_lower);
+
+ /*
+ * Lower bound of "spec" should be equal (or greater than or equal
+ * in case defaultPart=true) to lower bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ overlap = true;
+ }
+ else
+ {
+ PartitionRangeBound *split_upper;
+
+ split_upper = make_one_partition_rbound(key, -1, split_spec->upperdatums, false);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ upper->datums, upper->kind,
+ false, split_upper);
+
+ /*
+ * Upper bound of of "spec" should be equal (or less than or equal
+ * in case defaultPart=true) to upper bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval > 0))
+ overlap = true;
+ }
+
+ if (overlap)
+ {
+ PartitionRangeDatum *datum;
+
+ datum = list_nth(first ? spec->lowerdatums : spec->upperdatums, abs(cmpval) - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("%s bound of partition \"%s\" is %s %s bound of split partition",
+ first ? "lower" : "upper",
+ relname,
+ defaultPart ? (first ? "less than" : "greater than") : "not equals to",
+ first ? "lower" : "upper"),
+ parser_errposition(pstate, datum->location)));
+ }
+ }
+}
+
+/*
+ * check_partition_bounds_for_split_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that bounds of new partition is inside bounds of split partition
+ * (with Oid splitPartOid).
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_list(Relation parent, char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int with = -1;
+ bool overlap = false;
+ int overlap_location = -1;
+ ListCell *cell;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+ Assert(spec->strategy == PARTITION_STRATEGY_LIST);
+ Assert(boundinfo && boundinfo->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Search each value of new partition "spec" in existing partitions. All
+ * of them should be in split partition (with Oid splitPartOid).
+ */
+ foreach(cell, spec->listdatums)
+ {
+ Const *val = lfirst_node(Const, cell);
+
+ overlap_location = val->location;
+ if (!val->constisnull)
+ {
+ int offset;
+ bool equal;
+
+ offset = partition_list_bsearch(&key->partsupfunc[0],
+ key->partcollation,
+ boundinfo,
+ val->constvalue,
+ &equal);
+ if (offset >= 0 && equal)
+ {
+ with = boundinfo->indexes[offset];
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have this value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ else if (partition_bound_accepts_nulls(boundinfo))
+ {
+ with = boundinfo->null_index;
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have NULL value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+
+ if (overlap)
+ {
+ Assert(with >= 0);
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another (not split) partition \"%s\"",
+ relname, get_rel_name(partdesc->oids[with])),
+ parser_errposition(pstate, overlap_location)));
+ }
+}
+
+/*
+ * find_value_in_new_partitions_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Function returns true in case any of new partitions contains value "value".
+ *
+ * partsupfunc: information about comparison function associated with the partition key
+ * partcollation: partitioning collation
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * value: the value that we are looking for
+ * isnull: true if the value that we are looking for is NULL
+ */
+static bool
+find_value_in_new_partitions_list(FmgrInfo *partsupfunc,
+ Oid *partcollation,
+ SinglePartitionSpec **parts,
+ int nparts,
+ Datum value,
+ bool isnull)
+{
+ ListCell *valptr;
+ int i;
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = parts[i];
+
+ foreach(valptr, sps->bound->listdatums)
+ {
+ Const *val = lfirst_node(Const, valptr);
+
+ if (isnull && val->constisnull)
+ return true;
+
+ if (!isnull && !val->constisnull)
+ {
+ if (DatumGetInt32(FunctionCall2Coll(&partsupfunc[0],
+ partcollation[0],
+ val->constvalue,
+ value)) == 0)
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/*
+ * check_parent_values_in_new_partitions
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that all values of split partition (with Oid partOid) contains in new
+ * partitions.
+ *
+ * parent: partitioned table
+ * partOid: split partition Oid
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_parent_values_in_new_partitions(Relation parent,
+ Oid partOid,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int i;
+ bool found = true;
+ bool searchNull = false;
+ Datum datum = PointerGetDatum(NULL);
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Special processing for NULL value. Search NULL-value if it contains
+ * split partition (partOid).
+ */
+ if (partition_bound_accepts_nulls(boundinfo) &&
+ partdesc->oids[boundinfo->null_index] == partOid)
+ {
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, true))
+ {
+ found = false;
+ searchNull = true;
+ }
+ }
+
+ /*
+ * Search all values of split partition with partOid in PartitionDesc of
+ * partitionde table.
+ */
+ for (i = 0; i < boundinfo->ndatums; i++)
+ {
+ if (partdesc->oids[boundinfo->indexes[i]] == partOid)
+ {
+ /* We found value that split partition contains. */
+ datum = boundinfo->datums[i][0];
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, false))
+ {
+ found = false;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ {
+ Const *notFoundVal;
+
+ if (!searchNull)
+ /* Make Const for get string representation of not found value. */
+ notFoundVal = makeConst(key->parttypid[0],
+ key->parttypmod[0],
+ key->parttypcoll[0],
+ key->parttyplen[0],
+ datum,
+ false, /* isnull */
+ key->parttypbyval[0]);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partitions not have value %s but split partition has",
+ searchNull ? "NULL" : get_list_partvalue_string(notFoundVal))));
+ }
+}
+
+/*
+ * check_partitions_for_split
+ *
+ * Checks new partitions for SPLIT PARTITIONS command:
+ * 1. DEFAULT partition should be one.
+ * 2. New partitions should have different names
+ * (with existing partitions too).
+ * 3. Bounds of new partitions should not overlap with new and existing
+ * partitions.
+ * 4. In case split partition is DEFAULT partition, one of new partitions
+ * should be DEFAULT.
+ * 5. In case new partitions or existing partitions contains DEFAULT
+ * partition, new partitions can have any bounds inside split
+ * partition bound (can be spaces between partitions bounds).
+ * 6. In case partitioned table does not have DEFAULT partition, DEFAULT
+ * partition can be defined as one of new partition.
+ * 7. In case new partitions not contains DEFAULT partition and
+ * partitioned table does not have DEFAULT partition the following
+ * should be true: sum bounds of new partitions should be equal
+ * to bound of split partition.
+ *
+ * parent: partitioned table
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * list: list of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate)
+{
+ PartitionKey key;
+ char strategy;
+ Oid defaultPartOid;
+ bool isSplitPartDefault;
+ bool existsDefaultPart;
+ ListCell *listptr;
+ int default_index = -1;
+ int i,
+ j;
+ SinglePartitionSpec **new_parts;
+ SinglePartitionSpec *spsPrev = NULL;
+ int nparts = 0;
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ switch (strategy)
+ {
+ case PARTITION_STRATEGY_LIST:
+ case PARTITION_STRATEGY_RANGE:
+ {
+ /*
+ * Make array new_parts with new partitions except DEFAULT
+ * partition.
+ */
+ new_parts = (SinglePartitionSpec **)
+ palloc0(list_length(partlist) * sizeof(SinglePartitionSpec *));
+ i = 0;
+ foreach(listptr, partlist)
+ {
+ SinglePartitionSpec *sps =
+ (SinglePartitionSpec *) lfirst(listptr);
+
+ if (sps->bound->is_default)
+ {
+ if (default_index >= 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("DEFAULT partition should be one")),
+ parser_errposition(pstate, sps->name->location));
+ default_index = i;
+ }
+ else
+ {
+ new_parts[nparts++] = sps;
+ }
+ i++;
+ }
+ }
+ break;
+
+ case PARTITION_STRATEGY_HASH:
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be split")));
+ break;
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ break;
+ }
+
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ PartitionRangeBound **lower_bounds;
+ SinglePartitionSpec **tmp_new_parts;
+
+ /*
+ * For simplify check for ranges of new partitions need to sort all
+ * partitions in ascending order of them bounds (we compare upper
+ * bound only).
+ */
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /* Create array of lower bounds. */
+ for (i = 0; i < nparts; i++)
+ {
+ lower_bounds[i] = make_one_partition_rbound(key, i,
+ new_parts[i]->bound->lowerdatums, true);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Reorder array of partitions. */
+ tmp_new_parts = new_parts;
+ new_parts = (SinglePartitionSpec **)
+ palloc0(nparts * sizeof(SinglePartitionSpec *));
+ for (i = 0; i < nparts; i++)
+ new_parts[i] = tmp_new_parts[lower_bounds[i]->index];
+
+ pfree(tmp_new_parts);
+ pfree(lower_bounds);
+ }
+
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(parent, true));
+
+ /* isSplitPartDefault flag: is split partition a DEFAULT partition? */
+ isSplitPartDefault = (defaultPartOid == splitPartOid);
+
+ if (isSplitPartDefault && default_index < 0)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("any partition in the list should be DEFAULT because split partition is DEFAULT")),
+ parser_errposition(pstate, ((SinglePartitionSpec *) linitial(partlist))->name->location));
+ }
+ else if (!isSplitPartDefault && (default_index >= 0) && OidIsValid(defaultPartOid))
+ {
+ SinglePartitionSpec *spsDef =
+ (SinglePartitionSpec *) list_nth(partlist, default_index);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition cannot be DEFAULT because DEFAULT partition already exists")),
+ parser_errposition(pstate, spsDef->name->location));
+ }
+
+ /* Indicator that partitioned table has (or will have) DEFAULT partition */
+ existsDefaultPart = OidIsValid(defaultPartOid) || (default_index >= 0);
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = new_parts[i];
+
+ if (isSplitPartDefault)
+ {
+ /*
+ * In case split partition is DEFAULT partition we can use any
+ * free ranges - as when creating a new partition.
+ */
+ check_new_partition_bound(sps->name->relname, parent, sps->bound,
+ pstate);
+ }
+ else
+ {
+ /*
+ * Checks that bound of current partition is inside bound of split
+ * partition. For range partitioning: checks that upper bound of
+ * previous partition is equal to lower bound of current
+ * partition. For list partitioning: checks that split partition
+ * contains all values of current partition.
+ */
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ bool first = (i == 0);
+ bool last = (i == (nparts - 1));
+
+ check_partition_bounds_for_split_range(parent, sps->name->relname, sps->bound,
+ splitPartOid, splitPartName,
+ first, last,
+ existsDefaultPart, pstate);
+ }
+ else
+ check_partition_bounds_for_split_list(parent, sps->name->relname,
+ sps->bound, splitPartOid, pstate);
+ }
+
+ /* Ranges of new partitions should not overlap. */
+ if (strategy == PARTITION_STRATEGY_RANGE && spsPrev)
+ check_two_partitions_bounds_range(parent, spsPrev->name, spsPrev->bound,
+ sps->name, sps->bound, existsDefaultPart, pstate);
+
+ spsPrev = sps;
+
+ /* Check: new partitions should have different names. */
+ for (j = i + 1; j < nparts; j++)
+ {
+ SinglePartitionSpec *sps2 = new_parts[j];
+
+ if (equal(sps->name, sps2->name))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("name \"%s\" already used", sps2->name->relname)),
+ parser_errposition(pstate, sps2->name->location));
+ }
+ }
+
+ if (strategy == PARTITION_STRATEGY_LIST)
+ {
+ /* Values of new partitions should not overlap. */
+ check_partitions_not_overlap_list(parent, new_parts, nparts,
+ pstate);
+
+ /*
+ * Need to check that all values of split partition contains in new
+ * partitions. Skip this check if DEFAULT partition exists.
+ */
+ if (!existsDefaultPart)
+ check_parent_values_in_new_partitions(parent, splitPartOid,
+ new_parts, nparts, pstate);
+ }
+
+ pfree(new_parts);
+}
+
/*
* calculate_partition_bound_for_merge
*
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index a51717e36c..65d6424156 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -13029,3 +13029,21 @@ get_range_partbound_string(List *bound_datums)
return buf->data;
}
+
+/*
+ * get_list_partvalue_string
+ * A C string representation of one list partition value
+ */
+char *
+get_list_partvalue_string(Const *val)
+{
+ deparse_context context;
+ StringInfo buf = makeStringInfo();
+
+ memset(&context, 0, sizeof(deparse_context));
+ context.buf = buf;
+
+ get_const_expr(val, &context, -1);
+
+ return buf->data;
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 27c28139c8..03c1f27053 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -2344,6 +2344,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_SplitPartition, /* SPLIT PARTITION */
AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index e2b4700d97..480896e7b6 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -415,6 +415,7 @@ PG_KEYWORD("skip", SKIP, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("smallint", SMALLINT, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("snapshot", SNAPSHOT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("some", SOME, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("split", SPLIT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("sql", SQL_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("stable", STABLE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("standalone", STANDALONE_P, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 0329d7bd84..9d2a26705f 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,6 +143,11 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate);
extern void calculate_partition_bound_for_merge(Relation parent,
List *partNames,
List *partOids,
diff --git a/src/include/utils/ruleutils.h b/src/include/utils/ruleutils.h
index 161fb5ef02..6d86080622 100644
--- a/src/include/utils/ruleutils.h
+++ b/src/include/utils/ruleutils.h
@@ -49,4 +49,6 @@ extern char *get_range_partbound_string(List *bound_datums);
extern char *pg_get_statisticsobjdef_string(Oid statextid);
+extern char *get_list_partvalue_string(Const *val);
+
#endif /* RULEUTILS_H */
diff --git a/src/test/isolation/expected/partition-split.out b/src/test/isolation/expected/partition-split.out
new file mode 100644
index 0000000000..5d9e8b0925
--- /dev/null
+++ b/src/test/isolation/expected/partition-split.out
@@ -0,0 +1,190 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s1b s1splt s2b s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2brr s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2bs s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2b s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2brr s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2bs s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2b s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2brr s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2bs s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 8bcaa8a625..0342eb39e4 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -104,6 +104,7 @@ test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
test: partition-merge
+test: partition-split
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-split.spec b/src/test/isolation/specs/partition-split.spec
new file mode 100644
index 0000000000..087239a4a1
--- /dev/null
+++ b/src/test/isolation/specs/partition-split.spec
@@ -0,0 +1,54 @@
+# Verify that SPLIT operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1splt { ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20)); }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s1 starts SPLIT PARTITION then s2 trying to insert row and
+# waits until s1 finished SPLIT operation.
+
+permutation s1b s1splt s2b s2i s1c s2c s2s
+permutation s1b s1splt s2brr s2i s1c s2c s2s
+permutation s1b s1splt s2bs s2i s1c s2c s2s
+
+permutation s1brr s1splt s2b s2i s1c s2c s2s
+permutation s1brr s1splt s2brr s2i s1c s2c s2s
+permutation s1brr s1splt s2bs s2i s1c s2c s2s
+
+permutation s1bs s1splt s2b s2i s1c s2c s2s
+permutation s1bs s1splt s2brr s2i s1c s2c s2s
+permutation s1bs s1splt s2bs s2i s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 69920757b2..265ef2a547 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_SplitPartition:
+ strtype = "SPLIT PARTITION";
+ break;
case AT_MergePartitions:
strtype = "MERGE PARTITIONS";
break;
diff --git a/src/test/regress/expected/partition_split.out b/src/test/regress/expected/partition_split.out
new file mode 100644
index 0000000000..7eb52f6fee
--- /dev/null
+++ b/src/test/regress/expected/partition_split.out
@@ -0,0 +1,1417 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_xxx" does not exist
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_jan2022" already exists
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: invalid bound specification for a range partition
+LINE 2: (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '202...
+ ^
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: empty range bound specified for partition "sales_mar2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+DETAIL: Specified lower bound ('03-01-2022') is greater than or equal to upper bound ('02-01-2022').
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+ERROR: list of new partitions should contains at least two items
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO...
+ ^
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb_mar_apr2022" already used
+LINE 3: PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03...
+ ^
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb2022" already used
+LINE 3: PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+LINE 4: ... sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-0...
+ ^
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_feb2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO...
+ ^
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO...
+ ^
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(4 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+ERROR: relation "sales_jan_feb2022" does not exist
+LINE 1: SELECT * FROM sales_jan_feb2022;
+ ^
+DROP TABLE sales_date CASCADE;
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 7 | Li | 175 | 03-08-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 11 | Trump | 380 | 04-06-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(11 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+-----------------------------+------------+----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx | | CREATE INDEX sales_others_sales_date_idx ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_feb2022 | sales_feb2022_sales_date_idx | | CREATE INDEX sales_feb2022_sales_date_idx ON partition_split_schema.sales_feb2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_mar2022 | sales_mar2022_sales_date_idx | | CREATE INDEX sales_mar2022_sales_date_idx ON partition_split_schema.sales_mar2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_apr2022 | sales_apr2022_sales_date_idx | | CREATE INDEX sales_apr2022_sales_date_idx ON partition_split_schema.sales_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+------------------------------+------------+-----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx1 | | CREATE INDEX sales_others_sales_date_idx1 ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211230) TO (2022...
+ ^
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+LINE 4: PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20...
+ ^
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211210) TO (2021...
+ ^
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211201) TO (2022...
+ ^
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+LINE 2: (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20...
+ ^
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_sales_amount_check"
+DETAIL: Failing row contains (1, 0, 03-11-2022).
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(-1) is not present in table "salesmans".
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(40) is not present in table "salesmans".
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+SELECT * FROM salesmans1_2;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans2_3;
+ salesman_id | salesman_name
+-------------+---------------
+ 2 | Ivanov
+(1 row)
+
+SELECT * FROM salesmans3_4;
+ salesman_id | salesman_name
+-------------+---------------
+ 3 | May
+(1 row)
+
+SELECT * FROM salesmans4_5;
+ salesman_id | salesman_name
+-------------+---------------
+ 4 | Ford
+(1 row)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+(2 rows)
+
+select * from salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+select * from salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_east" would overlap with another (not split) partition "sales_nord"
+LINE 3: ...ALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'...
+ ^
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+LINE 2: (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk...
+ ^
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+LINE 2: ...est FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ ^
+DROP TABLE sales_list;
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partitions not have value NULL but split partition has
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+ERROR: new partitions not have value 'Volgograd' but split partition has
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_west;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+(4 rows)
+
+SELECT * FROM sales_east;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+(2 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_central;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(4 rows)
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 026e7a7767..7cd4deda9b 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_split partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_split.sql b/src/test/regress/sql/partition_split.sql
new file mode 100644
index 0000000000..40c71889b6
--- /dev/null
+++ b/src/test/regress/sql/partition_split.sql
@@ -0,0 +1,833 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+
+DROP TABLE sales_date CASCADE;
+
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_others;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+
+SELECT * FROM salesmans1_2;
+SELECT * FROM salesmans2_3;
+SELECT * FROM salesmans3_4;
+SELECT * FROM salesmans4_5;
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+select * from salesmans01_10;
+select * from salesmans10_20;
+select * from salesmans20_30;
+select * from salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+DROP TABLE sales_list;
+
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_west;
+SELECT * FROM sales_east;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_central;
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index aa3025676f..877c1101f2 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2666,6 +2666,7 @@ SpecialJoinInfo
SpinDelayStatus
SplitInterval
SplitLR
+SplitPartitionContext
SplitPageLayout
SplitPoint
SplitTextOutputData
--
2.40.1.windows.1
[text/plain] v28-0003-Documentation-for-ALTER-TABLE-SPLIT-PARTITION-ME.patch (9.8K, ../../[email protected]/4-v28-0003-Documentation-for-ALTER-TABLE-SPLIT-PARTITION-ME.patch)
download | inline diff:
From 1b31a961b0aff84aa80f85a0ef00498ea1176ac6 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Tue, 28 Mar 2023 10:50:19 +0300
Subject: [PATCH v28 3/3] Documentation for ALTER TABLE SPLIT PARTITION/MERGE
PARTITIONS commands
---
doc/src/sgml/ref/alter_table.sgml | 138 +++++++++++++++++++++++++++++-
1 file changed, 135 insertions(+), 3 deletions(-)
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 6cdcd779ef..945228d84b 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,13 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO
+ (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT },
+ PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
+ INTO <replaceable class="parameter">partition_name</replaceable>
<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>
@@ -1118,14 +1125,113 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-split-partition">
+ <term><literal>SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }, PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])</literal></term>
+
+ <listitem>
+ <para>
+ This form splits a single partition of the target table. Hash-partitioning
+ is not supported. Bounds of new partitions should not overlap with new and
+ existing partitions (except <replaceable class="parameter">partition_name</replaceable>).
+ If the split partition is a DEFAULT partition, one of the new partitions must be DEFAULT.
+ In case one of the new partitions or one of existing partitions is DEFAULT,
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have spaces
+ between partitions bounds. If the partitioned table does not have a DEFAULT
+ partition, the DEFAULT partition can be defined as one of the new partitions.
+ </para>
+ <para>
+ In case new partitions do not contain a DEFAULT partition and the partitioned table
+ does not have a DEFAULT partition, the following must be true: sum bounds of
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... should be
+ equal to bound of split partition <replaceable class="parameter">partition_name</replaceable>.
+ One of the new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have
+ the same name as split partition <replaceable class="parameter">partition_name</replaceable>
+ (this is suitable in case of splitting a DEFAULT partition: we split it, but after
+ splitting we have a partition with the same name).
+ Only simple, non-partitioned partition can be split.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="sql-altertable-merge-partitions">
+ <term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
+
+ <listitem>
+ <para>
+ This form merge several partitions into one partition of the target table.
+ Hash-partitioning is not supported. If DEFAULT partition is not in the
+ list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ For range-partitioned tables is necessary that the ranges
+ of the partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] can
+ be merged into one range without spaces and overlaps (otherwise an error
+ will be generated). The combined range will be the range for the partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For list-partitioned tables the values lists of all partitions
+ <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] are
+ combined and form a list of values of partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ If DEFAULT partition is in the list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ The partition <replaceable class="parameter">partition_name</replaceable>
+ will be the DEFAULT partition.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For range- and list-partitioned tables the ranges and lists of values
+ of the merged partitions can be any.
+ </para>
+ </listitem>
+ </itemizedlist>
+ The new partition <replaceable class="parameter">partition_name</replaceable>
+ can have the same name as one of the merged partitions. Only simple,
+ non-partitioned partitions can be merged.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
</variablelist>
</para>
<para>
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
- <literal>ATTACH PARTITION</literal>, and
- <literal>DETACH PARTITION</literal> can be combined into
+ <literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
+ <literal>SPLIT PARTITION</literal>, and <literal>MERGE PARTITIONS</literal>
+ can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1368,7 +1474,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<term><replaceable class="parameter">partition_name</replaceable></term>
<listitem>
<para>
- The name of the table to attach as a new partition or to detach from this table.
+ The name of the table to attach as a new partition or to detach from this table,
+ or the name of split partition, or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1784,6 +1891,31 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To split a single partition of the range-partitioned table:
+<programlisting>
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2023 INTO
+ (PARTITION sales_feb2023 FOR VALUES FROM ('2023-02-01') TO ('2023-03-01'),
+ PARTITION sales_mar2023 FOR VALUES FROM ('2023-03-01') TO ('2023-04-01'),
+ PARTITION sales_apr2023 FOR VALUES FROM ('2023-04-01') TO ('2023-05-01'));
+</programlisting></para>
+
+ <para>
+ To split a single partition of the list-partitioned table:
+<programlisting>
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+</programlisting></para>
+
+ <para>
+ To merge several partitions into one partition of the target table:
+<programlisting>
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central)
+ INTO sales_all;
+</programlisting></para>
+
</refsect1>
<refsect1>
--
2.40.1.windows.1
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Add SPLIT PARTITION/MERGE PARTITIONS commands
@ 2024-03-31 02:12 Dmitry Koval <[email protected]>
parent: Alexander Korotkov <[email protected]>
1 sibling, 1 reply; 9+ messages in thread
From: Dmitry Koval @ 2024-03-31 02:12 UTC (permalink / raw)
To: [email protected]
Hi!
Patch stop applying due to changes in upstream.
Here is a rebased version.
--
With best regards,
Dmitry Koval
Postgres Professional: http://postgrespro.com
From c385b3e8c1aa96036d30ab1bfdbe22b1bde01524 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 16:06:03 +0300
Subject: [PATCH v29 1/3] ALTER TABLE MERGE PARTITIONS command
---
src/backend/commands/tablecmds.c | 353 ++++++++-
src/backend/parser/gram.y | 22 +-
src/backend/parser/parse_utilcmd.c | 89 +++
src/backend/partitioning/partbounds.c | 207 +++++
src/include/nodes/parsenodes.h | 14 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 6 +
.../isolation/expected/partition-merge.out | 199 +++++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-merge.spec | 54 ++
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_merge.out | 736 ++++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_merge.sql | 434 +++++++++++
src/tools/pgindent/typedefs.list | 1 +
15 files changed, 2103 insertions(+), 19 deletions(-)
create mode 100644 src/test/isolation/expected/partition-merge.out
create mode 100644 src/test/isolation/specs/partition-merge.spec
create mode 100644 src/test/regress/expected/partition_merge.out
create mode 100644 src/test/regress/sql/partition_merge.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index a28f405e27..9914fc0d9a 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,8 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context);
/* ----------------------------------------------------------------
* DefineRelation
@@ -4746,6 +4748,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_MergePartitions:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5165,6 +5171,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_MergePartitions:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5562,6 +5573,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_MergePartitions:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecMergePartitions(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -6556,6 +6575,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_MergePartitions:
+ return "MERGE PARTITIONS";
case AT_AddIdentity:
return "ALTER COLUMN ... ADD IDENTITY";
case AT_SetIdentity:
@@ -19051,6 +19072,37 @@ QueuePartitionConstraintValidation(List **wqueue, Relation scanrel,
}
}
+/*
+ * attachPartitionTable: attach new partition to partitioned table
+ *
+ * wqueue: the ALTER TABLE work queue; can be NULL when not running as part
+ * of an ALTER TABLE sequence.
+ * rel: partitioned relation;
+ * attachrel: relation of attached partition;
+ * bound: bounds of attached relation.
+ */
+static void
+attachPartitionTable(List **wqueue, Relation rel, Relation attachrel, PartitionBoundSpec *bound)
+{
+ /* OK to create inheritance. Rest of the checks performed there */
+ CreateInheritance(attachrel, rel, true);
+
+ /* Update the pg_class entry. */
+ StorePartitionBound(attachrel, rel, bound);
+
+ /* Ensure there exists a correct set of indexes in the partition. */
+ AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
+
+ /* and triggers */
+ CloneRowTriggersToPartition(rel, attachrel);
+
+ /*
+ * Clone foreign key constraints. Callee is responsible for setting up
+ * for phase 3 constraint verification.
+ */
+ CloneForeignKeyConstraints(wqueue, rel, attachrel);
+}
+
/*
* ALTER TABLE <name> ATTACH PARTITION <partition-name> FOR VALUES
*
@@ -19253,23 +19305,8 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd,
check_new_partition_bound(RelationGetRelationName(attachrel), rel,
cmd->bound, pstate);
- /* OK to create inheritance. Rest of the checks performed there */
- CreateInheritance(attachrel, rel, true);
-
- /* Update the pg_class entry. */
- StorePartitionBound(attachrel, rel, cmd->bound);
-
- /* Ensure there exists a correct set of indexes in the partition. */
- AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
-
- /* and triggers */
- CloneRowTriggersToPartition(rel, attachrel);
-
- /*
- * Clone foreign key constraints. Callee is responsible for setting up
- * for phase 3 constraint verification.
- */
- CloneForeignKeyConstraints(wqueue, rel, attachrel);
+ /* Attach a new partition to the partitioned table. */
+ attachPartitionTable(wqueue, rel, attachrel, cmd->bound);
/*
* Generate partition constraint from the partition bound specification.
@@ -20823,3 +20860,285 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+
+/*
+ * createPartitionTable: create table for new partition with given name
+ * (newPartName) like table (modelRelName)
+ *
+ * Emulates command: CREATE TABLE <newPartName> (LIKE <modelRelName>
+ * INCLUDING ALL EXCLUDING INDEXES EXCLUDING IDENTITY)
+ */
+static void
+createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
+ AlterTableUtilityContext *context)
+{
+ CreateStmt *createStmt;
+ TableLikeClause *tlc;
+ PlannedStmt *wrapper;
+
+ createStmt = makeNode(CreateStmt);
+ createStmt->relation = newPartName;
+ createStmt->tableElts = NIL;
+ createStmt->inhRelations = NIL;
+ createStmt->constraints = NIL;
+ createStmt->options = NIL;
+ createStmt->oncommit = ONCOMMIT_NOOP;
+ createStmt->tablespacename = NULL;
+ createStmt->if_not_exists = false;
+
+ tlc = makeNode(TableLikeClause);
+ tlc->relation = modelRelName;
+
+ /*
+ * Indexes will be inherited on "attach new partitions" stage, after data
+ * moving.
+ */
+ tlc->options = CREATE_TABLE_LIKE_ALL & ~(CREATE_TABLE_LIKE_INDEXES | CREATE_TABLE_LIKE_IDENTITY);
+ tlc->relationOid = InvalidOid;
+ createStmt->tableElts = lappend(createStmt->tableElts, tlc);
+
+ /* Need to make a wrapper PlannedStmt. */
+ wrapper = makeNode(PlannedStmt);
+ wrapper->commandType = CMD_UTILITY;
+ wrapper->canSetTag = false;
+ wrapper->utilityStmt = (Node *) createStmt;
+ wrapper->stmt_location = context->pstmt->stmt_location;
+ wrapper->stmt_len = context->pstmt->stmt_len;
+
+ ProcessUtility(wrapper,
+ context->queryString,
+ false,
+ PROCESS_UTILITY_SUBCOMMAND,
+ NULL,
+ NULL,
+ None_Receiver,
+ NULL);
+}
+
+/*
+ * moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
+ * of the partitioned table (rel) and move rows into the new partition
+ * (newPartRel).
+ */
+static void
+moveMergedTablesRows(Relation rel, List *mergingPartitionsList,
+ Relation newPartRel)
+{
+ CommandId mycid;
+
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ ListCell *listptr;
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot;
+
+ mycid = GetCurrentCommandId(true);
+
+ /* Prepare a BulkInsertState for table_tuple_insert. */
+ bistate = GetBulkInsertState();
+
+ /* Create necessary tuple slot. */
+ dstslot = MakeSingleTupleTableSlot(RelationGetDescr(newPartRel),
+ table_slot_callbacks(newPartRel));
+ ExecStoreAllNullTuple(dstslot);
+
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+ TupleTableSlot *srcslot;
+ TupleConversionMap *tuple_map;
+ TableScanDesc scan;
+ Snapshot snapshot;
+
+ /* Create tuple slot for new partition. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(mergingPartition),
+ table_slot_callbacks(mergingPartition));
+
+ /*
+ * Map computing for moving attributes of merged partition to new
+ * partition.
+ */
+ tuple_map = convert_tuples_by_name(RelationGetDescr(mergingPartition),
+ RelationGetDescr(newPartRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(mergingPartition, snapshot, 0, NULL);
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ {
+ bool insertIndexes;
+
+ table_tuple_insert(newPartRel, insertslot, mycid,
+ ti_options, bistate, &insertIndexes);
+ }
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+ }
+
+ ExecDropSingleTupleTableSlot(dstslot);
+ FreeBulkInsertState(bistate);
+
+ table_finish_bulk_insert(newPartRel, ti_options);
+}
+
+/*
+ * ALTER TABLE <name> MERGE PARTITIONS <partition-list> INTO <partition-name>
+ */
+static void
+ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation newPartRel;
+ ListCell *listptr;
+ List *mergingPartitionsList = NIL;
+ Oid defaultPartOid;
+ RangeVar *mergePartName = cmd->name;
+ bool isSameName = false;
+
+ /*
+ * Lock all merged partitions, check them and create list with partitions
+ * contexts.
+ */
+ foreach(listptr, cmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+ Relation mergingPartition;
+
+ /*
+ * We are going to detach and remove this partition: need to use
+ * exclusive lock for prevent DML-queries to the partition.
+ */
+ mergingPartition = table_openrv(name, AccessExclusiveLock);
+
+ if (mergingPartition->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot merge non-table partition \"%s\"",
+ RelationGetRelationName(mergingPartition))));
+
+ /*
+ * Checking that two partitions have the same name was before, in
+ * function transformPartitionCmdForMerge().
+ */
+ if (equal(name, cmd->name))
+ {
+ /* One new partition can have the same name as merged partition. */
+ isSameName = true;
+ newPartRel = mergingPartition;
+ }
+ else
+ {
+ /* Store a next merging partition into the list. */
+ mergingPartitionsList = lappend(mergingPartitionsList,
+ mergingPartition);
+ }
+ }
+
+ /* Detach all merged partitions. */
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(mergingPartition, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, mergingPartition, false, defaultPartOid);
+ }
+
+ if (isSameName)
+ {
+ /* Detach partition that we re-use for merged partition. */
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(newPartRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, newPartRel, false, defaultPartOid);
+
+ /* Make these updates visible */
+ CommandCounterIncrement();
+ }
+ else
+ {
+ /* Create table for new partition, use partitioned table as model. */
+ createPartitionTable(mergePartName,
+ makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1),
+ context);
+
+ /*
+ * Open the new partition and acquire exclusive lock on it. This will
+ * stop all the operations with partitioned table. This might seem
+ * excessive, but this is the way we make sure nobody is planning
+ * queries involving merging partitions.
+ */
+ newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+ }
+
+ /* Copy data from merged partitions to new partition. */
+ moveMergedTablesRows(rel, mergingPartitionsList, newPartRel);
+
+ /*
+ * Attach a new partition to the partitioned table. wqueue = NULL:
+ * verification for each cloned constraint is not need.
+ */
+ attachPartitionTable(NULL, rel, newPartRel, cmd->bound);
+
+ /* Unlock and drop merged partitions. */
+ foreach(listptr, mergingPartitionsList)
+ {
+ ObjectAddress object;
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Get relation id before table_close() call. */
+ object.objectId = RelationGetRelid(mergingPartition);
+ object.classId = RelationRelationId;
+ object.objectSubId = 0;
+
+ /* Keep the lock until commit. */
+ table_close(mergingPartition, NoLock);
+
+ performDeletion(&object, DROP_RESTRICT, 0);
+ }
+ list_free(mergingPartitionsList);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+}
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 682748eb4b..d7ef1d95b9 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -757,7 +757,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
ORDER ORDINALITY OTHERS OUT_P OUTER_P
OVER OVERLAPS OVERLAY OVERRIDING OWNED OWNER
- PARALLEL PARAMETER PARSER PARTIAL PARTITION PASSING PASSWORD
+ PARALLEL PARAMETER PARSER PARTIAL PARTITION PARTITIONS PASSING PASSWORD
PERIOD PLACING PLANS POLICY
POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
PRIOR PRIVILEGES PROCEDURAL PROCEDURE PROCEDURES PROGRAM PUBLICATION
@@ -2312,6 +2312,7 @@ partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = $4;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -2326,6 +2327,7 @@ partition_cmd:
n->subtype = AT_DetachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = $4;
n->def = (Node *) cmd;
@@ -2339,6 +2341,21 @@ partition_cmd:
n->subtype = AT_DetachPartitionFinalize;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
+ /* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
+ | MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_MergePartitions;
+ cmd->name = $7;
+ cmd->bound = NULL;
+ cmd->partlist = $4;
cmd->concurrent = false;
n->def = (Node *) cmd;
$$ = (Node *) n;
@@ -2355,6 +2372,7 @@ index_partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -17528,6 +17546,7 @@ unreserved_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
@@ -18148,6 +18167,7 @@ bare_label_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index c7efd8d8ce..48a23c7ca4 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -58,6 +58,8 @@
#include "parser/parse_type.h"
#include "parser/parse_utilcmd.h"
#include "parser/parser.h"
+#include "partitioning/partdesc.h"
+#include "partitioning/partbounds.h"
#include "rewrite/rewriteManip.h"
#include "utils/acl.h"
#include "utils/builtins.h"
@@ -3413,6 +3415,80 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForMerge
+ * Analyze the ALTER TABLLE ... MERGE PARTITIONS command
+ *
+ * Does simple checks for merged partitions. Calculates bound of result
+ * partition.
+ */
+static void
+transformPartitionCmdForMerge(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Oid defaultPartOid;
+ Oid partOid;
+ Relation parent = cxt->rel;
+ PartitionKey key;
+ char strategy;
+ ListCell *listptr,
+ *listptr2;
+ bool isDefaultPart = false;
+ List *partOids = NIL;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ if (strategy == PARTITION_STRATEGY_HASH)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be merged")));
+
+ /* Is current partition a DEFAULT partition? */
+ defaultPartOid = get_default_oid_from_partdesc(
+ RelationGetPartitionDesc(parent, true));
+
+ foreach(listptr, partcmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+
+ /* Partitions in the list should have different names. */
+ for_each_cell(listptr2, partcmd->partlist, lnext(partcmd->partlist, listptr))
+ {
+ RangeVar *name2 = (RangeVar *) lfirst(listptr2);
+
+ if (equal(name, name2))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("partition with name \"%s\" already used", name->relname)),
+ parser_errposition(cxt->pstate, name2->location));
+ }
+
+ /* Search DEFAULT partition in the list. */
+ partOid = RangeVarGetRelid(name, NoLock, false);
+ if (partOid == defaultPartOid)
+ isDefaultPart = true;
+ partOids = lappend_oid(partOids, partOid);
+ }
+
+ /* Allocate bound of result partition. */
+ Assert(partcmd->bound == NULL);
+ partcmd->bound = makeNode(PartitionBoundSpec);
+
+ /* Fill partition bound. */
+ partcmd->bound->strategy = strategy;
+ partcmd->bound->location = -1;
+ partcmd->bound->is_default = isDefaultPart;
+ if (!isDefaultPart)
+ calculate_partition_bound_for_merge(parent, partcmd->partlist,
+ partOids, partcmd->bound,
+ cxt->pstate);
+}
+
/*
* transformAlterTableStmt -
* parse analysis for ALTER TABLE
@@ -3683,6 +3759,19 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_MergePartitions:
+ {
+ PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
+
+ if (list_length(partcmd->partlist) < 2)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("list of new partitions should contains at least two items")));
+ transformPartitionCmdForMerge(&cxt, partcmd);
+ newcmds = lappend(newcmds, cmd);
+ break;
+ }
+
default:
/*
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index c28639d2e3..9ed80d721e 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -4977,3 +4977,210 @@ satisfies_hash_partition(PG_FUNCTION_ARGS)
PG_RETURN_BOOL(rowHash % modulus == remainder);
}
+
+/*
+ * check_two_partitions_bounds_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * This is a helper function for check_partitions_for_split() and
+ * calculate_partition_bound_for_merge().
+ * This function compares upper bound of first_bound and lower bound of
+ * second_bound. These bounds should be equals except case
+ * "defaultPart == true" (this means that one of split partitions is DEFAULT).
+ * In this case upper bound of first_bound can be less than lower bound of
+ * second_bound because space between of these bounds will be included in
+ * DEFAULT partition.
+ *
+ * parent: partitioned table
+ * first_name: name of first partition
+ * first_bound: bound of first partition
+ * second_name: name of second partition
+ * second_bound: bound of second partition
+ * defaultPart: true if one of split partitions is DEFAULT
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_two_partitions_bounds_range(Relation parent,
+ RangeVar *first_name,
+ PartitionBoundSpec *first_bound,
+ RangeVar *second_name,
+ PartitionBoundSpec *second_bound,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *first_upper;
+ PartitionRangeBound *second_lower;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+
+ first_upper = make_one_partition_rbound(key, -1, first_bound->upperdatums, false);
+ second_lower = make_one_partition_rbound(key, -1, second_bound->lowerdatums, true);
+
+ /*
+ * lower1=false (the second to last argument) for correct comparison lower
+ * and upper bounds.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ second_lower->datums, second_lower->kind,
+ false, first_upper);
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ {
+ PartitionRangeDatum *datum = linitial(second_bound->lowerdatums);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("lower bound of partition \"%s\" conflicts with upper bound of previous partition \"%s\"",
+ second_name->relname, first_name->relname),
+ parser_errposition(pstate, datum->location)));
+ }
+}
+
+/*
+ * get_partition_bound_spec
+ *
+ * Returns description of partition with Oid "partOid" and name "name".
+ */
+static PartitionBoundSpec *
+get_partition_bound_spec(Oid partOid, RangeVar *name)
+{
+ HeapTuple tuple;
+ Datum datum;
+ bool isnull;
+ PartitionBoundSpec *boundspec = NULL;
+
+ /* Try fetching the tuple from the catcache, for speed. */
+ tuple = SearchSysCache1(RELOID, partOid);
+ if (!HeapTupleIsValid(tuple))
+ elog(ERROR, "cache lookup failed for relation \"%s\"",
+ name->relname);
+
+ datum = SysCacheGetAttr(RELOID, tuple,
+ Anum_pg_class_relpartbound,
+ &isnull);
+ if (isnull)
+ elog(ERROR, "partition bound for relation \"%s\" is null",
+ name->relname);
+
+ boundspec = stringToNode(TextDatumGetCString(datum));
+
+ if (!IsA(boundspec, PartitionBoundSpec))
+ elog(ERROR, "expected PartitionBoundSpec for relation \"%s\"",
+ name->relname);
+
+ ReleaseSysCache(tuple);
+ return boundspec;
+}
+
+/*
+ * calculate_partition_bound_for_merge
+ *
+ * Calculates the bound of merged partition "spec" by using the bounds of
+ * partitions to be merged.
+ *
+ * parent: partitioned table
+ * partNames: names of partitions to be merged
+ * partOids: Oids of partitions to be merged
+ * spec (out): bounds specification of the merged partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionBoundSpec *bound;
+
+ Assert(!spec->is_default);
+
+ switch (key->strategy)
+ {
+ case PARTITION_STRATEGY_RANGE:
+ {
+ int i;
+ PartitionRangeBound **lower_bounds;
+ int nparts = list_length(partOids);
+ List *bounds = NIL;
+
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /*
+ * Create array of lower bounds and list of
+ * PartitionBoundSpec.
+ */
+ for (i = 0; i < nparts; i++)
+ {
+ bound = get_partition_bound_spec(list_nth_oid(partOids, i),
+ (RangeVar *) list_nth(partNames, i));
+
+ lower_bounds[i] = make_one_partition_rbound(key, i, bound->lowerdatums, true);
+ bounds = lappend(bounds, bound);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Ranges of partitions should not overlap. */
+ for (i = 1; i < nparts; i++)
+ {
+ int index = lower_bounds[i]->index;
+ int prev_index = lower_bounds[i - 1]->index;
+
+ check_two_partitions_bounds_range(parent,
+ (RangeVar *) list_nth(partNames, prev_index),
+ (PartitionBoundSpec *) list_nth(bounds, prev_index),
+ (RangeVar *) list_nth(partNames, index),
+ (PartitionBoundSpec *) list_nth(bounds, index),
+ false, pstate);
+ }
+
+ /*
+ * Lower bound of first partition is a lower bound of merged
+ * partition.
+ */
+ spec->lowerdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[0]->index))->lowerdatums;
+
+ /*
+ * Upper bound of last partition is a upper bound of merged
+ * partition.
+ */
+ spec->upperdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[nparts - 1]->index))->upperdatums;
+
+ pfree(lower_bounds);
+ list_free(bounds);
+ break;
+ }
+
+ case PARTITION_STRATEGY_LIST:
+ {
+ ListCell *listptr,
+ *listptr2;
+
+ /* Consolidate bounds for all partitions in the list. */
+ forboth(listptr, partOids, listptr2, partNames)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr2);
+ Oid curOid = lfirst_oid(listptr);
+
+ bound = get_partition_bound_spec(curOid, name);
+ spec->listdatums = list_concat(spec->listdatums, bound->listdatums);
+ }
+ break;
+ }
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ }
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index a690ebc6e5..abb705d11d 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -934,6 +934,17 @@ typedef struct PartitionRangeDatum
ParseLoc location; /* token location, or -1 if unknown */
} PartitionRangeDatum;
+/*
+ * PartitionDesc - info about single partition for ALTER TABLE SPLIT PARTITION command
+ */
+typedef struct SinglePartitionSpec
+{
+ NodeTag type;
+
+ RangeVar *name; /* name of partition */
+ PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+} SinglePartitionSpec;
+
/*
* PartitionCmd - info for ALTER TABLE/INDEX ATTACH/DETACH PARTITION commands
*/
@@ -942,6 +953,8 @@ typedef struct PartitionCmd
NodeTag type;
RangeVar *name; /* name of partition to attach/detach */
PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+ List *partlist; /* list of partitions, for SPLIT PARTITION
+ * command */
bool concurrent;
} PartitionCmd;
@@ -2332,6 +2345,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
AT_DropIdentity, /* DROP IDENTITY */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 6c959e85d5..2304165408 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -333,6 +333,7 @@ PG_KEYWORD("parameter", PARAMETER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("parser", PARSER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partial", PARTIAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partition", PARTITION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("partitions", PARTITIONS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("passing", PASSING, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("password", PASSWORD, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("period", PERIOD, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 3d9cc1031f..0329d7bd84 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,4 +143,10 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate);
+
#endif /* PARTBOUNDS_H */
diff --git a/src/test/isolation/expected/partition-merge.out b/src/test/isolation/expected/partition-merge.out
new file mode 100644
index 0000000000..98446aaab5
--- /dev/null
+++ b/src/test/isolation/expected/partition-merge.out
@@ -0,0 +1,199 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 188fc04f85..8bcaa8a625 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -103,6 +103,7 @@ test: partition-key-update-1
test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
+test: partition-merge
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-merge.spec b/src/test/isolation/specs/partition-merge.spec
new file mode 100644
index 0000000000..ec48732c58
--- /dev/null
+++ b/src/test/isolation/specs/partition-merge.spec
@@ -0,0 +1,54 @@
+# Verify that MERGE operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1merg { ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20; }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2u { UPDATE tpart SET t = 'text01modif' where i = 1; }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s2 inserts row into table. s1 starts MERGE PARTITIONS then
+# s2 trying to update inserted row and waits until s1 finished
+# MERGE operation.
+
+permutation s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 48563b2cf0..69920757b2 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_MergePartitions:
+ strtype = "MERGE PARTITIONS";
+ break;
case AT_AddIdentity:
strtype = "ADD IDENTITY";
break;
diff --git a/src/test/regress/expected/partition_merge.out b/src/test/regress/expected/partition_merge.out
new file mode 100644
index 0000000000..b53df2703b
--- /dev/null
+++ b/src/test/regress/expected/partition_merge.out
@@ -0,0 +1,736 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+ERROR: partition with name "sales_feb2022" already used
+LINE 1: ...e MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2...
+ ^
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+ERROR: cannot merge non-table partition "sales_apr2022"
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_jan2022"
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+ERROR: lower bound of partition "sales_jan2022" conflicts with upper bound of previous partition "sales_dec2021"
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | p | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_dec2021 | r | f | FOR VALUES FROM ('12-01-2021') TO ('12-31-2021')
+ sales_jan_feb_mar2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+ pg_get_partkeydef
+--------------------
+ RANGE (sales_date)
+(1 row)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_mar2022 | r | f | FOR VALUES FROM ('03-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_feb_mar_apr2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('05-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+-------------------------+-----------------------+--------------------------------------+------------+-----------------------------------------------------------------------------------------------------------------------------
+ partitions_merge_schema | sales_feb_mar_apr2022 | sales_feb_mar_apr2022_sales_date_idx | | CREATE INDEX sales_feb_mar_apr2022_sales_date_idx ON partitions_merge_schema.sales_feb_mar_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb_mar_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(10 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(10 rows)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_range;
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+select * from sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(7 rows)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+(2 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(2 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(6 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+DROP TABLE sales_date;
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+select * from salesmans;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(6 rows)
+
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(5 rows)
+
+DROP TABLE salesmans;
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr_all;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+ERROR: partition bound for relation "sales_external" is null
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+ERROR: partition bound for relation "sales_external2" is null
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------------
+ sales_central | r | f | FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd')
+ sales_east | r | f | FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_west | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+--------------+---------+------------------+---------------------------------------------------------------------------------------------------------------------------
+ sales_all | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Khabarovsk', 'Vladivostok', 'Moscow', 'Kazan', 'Volgograd')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_all;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(10 rows)
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 5ac6e871f5..026e7a7767 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_merge.sql b/src/test/regress/sql/partition_merge.sql
new file mode 100644
index 0000000000..8bf90fd621
--- /dev/null
+++ b/src/test/regress/sql/partition_merge.sql
@@ -0,0 +1,434 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb_mar_apr2022;
+SELECT * FROM sales_others;
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_range;
+
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+
+select * from sales_others;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+DROP TABLE sales_date;
+
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+select * from salesmans;
+select * from salesmans01_10;
+select * from salesmans10_40;
+
+DROP TABLE salesmans;
+
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr_all;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+
+
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_all;
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index a8d7bed411..a899944dcd 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2603,6 +2603,7 @@ SimpleStats
SimpleStringList
SimpleStringListCell
SingleBoundSortItem
+SinglePartitionSpec
Size
SkipPages
SlabBlock
--
2.40.1.windows.1
From c380128fb90dc2afc8238294e5bc4c02dc325df8 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 17:58:52 +0300
Subject: [PATCH v29 2/3] ALTER TABLE SPLIT PARTITION command
---
src/backend/commands/tablecmds.c | 411 +++++
src/backend/parser/gram.y | 38 +-
src/backend/parser/parse_utilcmd.c | 62 +-
src/backend/partitioning/partbounds.c | 657 ++++++++
src/backend/utils/adt/ruleutils.c | 18 +
src/include/nodes/parsenodes.h | 1 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 5 +
src/include/utils/ruleutils.h | 2 +
.../isolation/expected/partition-split.out | 190 +++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-split.spec | 54 +
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_split.out | 1417 +++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_split.sql | 833 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
17 files changed, 3684 insertions(+), 12 deletions(-)
create mode 100644 src/test/isolation/expected/partition-split.out
create mode 100644 src/test/isolation/specs/partition-split.spec
create mode 100644 src/test/regress/expected/partition_split.out
create mode 100644 src/test/regress/sql/partition_split.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 9914fc0d9a..acf49b2057 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,9 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab,
+ Relation rel, PartitionCmd *cmd,
+ AlterTableUtilityContext *context);
static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
PartitionCmd *cmd, AlterTableUtilityContext *context);
@@ -4748,6 +4751,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_SplitPartition:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
case AT_MergePartitions:
cmd_lockmode = AccessExclusiveLock;
break;
@@ -5171,6 +5178,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_SplitPartition:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
case AT_MergePartitions:
ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
/* No command-specific prep needed */
@@ -5573,6 +5585,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_SplitPartition:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecSplitPartition(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
case AT_MergePartitions:
cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
cur_pass, context);
@@ -6575,6 +6595,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_SplitPartition:
+ return "SPLIT PARTITION";
case AT_MergePartitions:
return "MERGE PARTITIONS";
case AT_AddIdentity:
@@ -20861,6 +20883,260 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+/*
+ * Struct with context of new partition for insert rows from splited partition
+ */
+typedef struct SplitPartitionContext
+{
+ ExprState *partqualstate; /* expression for check slot for partition
+ * (NULL for DEFAULT partition) */
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot; /* slot for insert row into partition */
+ Relation partRel; /* relation for partition */
+} SplitPartitionContext;
+
+
+/*
+ * createSplitPartitionContext: create context for partition and fill it
+ */
+static SplitPartitionContext *
+createSplitPartitionContext(Relation partRel)
+{
+ SplitPartitionContext *pc;
+
+ pc = (SplitPartitionContext *) palloc0(sizeof(SplitPartitionContext));
+ pc->partRel = partRel;
+
+ /*
+ * Prepare a BulkInsertState for table_tuple_insert. The FSM is empty, so
+ * don't bother using it.
+ */
+ pc->bistate = GetBulkInsertState();
+
+ /* Create tuple slot for new partition. */
+ pc->dstslot = MakeSingleTupleTableSlot(RelationGetDescr(pc->partRel),
+ table_slot_callbacks(pc->partRel));
+ ExecStoreAllNullTuple(pc->dstslot);
+
+ return pc;
+}
+
+/*
+ * deleteSplitPartitionContext: delete context for partition
+ */
+static void
+deleteSplitPartitionContext(SplitPartitionContext *pc, int ti_options)
+{
+ ExecDropSingleTupleTableSlot(pc->dstslot);
+ FreeBulkInsertState(pc->bistate);
+
+ table_finish_bulk_insert(pc->partRel, ti_options);
+
+ pfree(pc);
+}
+
+/*
+ * moveSplitTableRows: scan split partition (splitRel) of partitioned table
+ * (rel) and move rows into new partitions.
+ *
+ * New partitions description:
+ * partlist: list of pointers to SinglePartitionSpec structures.
+ * newPartRels: list of Relation's.
+ * defaultPartOid: oid of DEFAULT partition, for table rel.
+ */
+static void
+moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPartRels, Oid defaultPartOid)
+{
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ CommandId mycid;
+ EState *estate;
+ ListCell *listptr,
+ *listptr2;
+ TupleTableSlot *srcslot;
+ ExprContext *econtext;
+ TableScanDesc scan;
+ Snapshot snapshot;
+ MemoryContext oldCxt;
+ List *partContexts = NIL;
+ TupleConversionMap *tuple_map;
+ SplitPartitionContext *defaultPartCtx = NULL,
+ *pc;
+ bool isOldDefaultPart = false;
+
+ mycid = GetCurrentCommandId(true);
+
+ estate = CreateExecutorState();
+
+ forboth(listptr, partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ pc = createSplitPartitionContext((Relation) lfirst(listptr2));
+
+ if (sps->bound->is_default)
+ {
+ /* We should not create constraint for detached DEFAULT partition. */
+ defaultPartCtx = pc;
+ }
+ else
+ {
+ List *partConstraint;
+
+ /* Build expression execution states for partition check quals. */
+ partConstraint = get_qual_from_partbound(rel, sps->bound);
+ partConstraint =
+ (List *) eval_const_expressions(NULL,
+ (Node *) partConstraint);
+ /* Make boolean expression for ExecCheck(). */
+ partConstraint = list_make1(make_ands_explicit(partConstraint));
+
+ /*
+ * Map the vars in the constraint expression from rel's attnos to
+ * splitRel's.
+ */
+ partConstraint = map_partition_varattnos(partConstraint,
+ 1, splitRel, rel);
+
+ pc->partqualstate =
+ ExecPrepareExpr((Expr *) linitial(partConstraint), estate);
+ Assert(pc->partqualstate != NULL);
+ }
+
+ /* Store partition context into list. */
+ partContexts = lappend(partContexts, pc);
+ }
+
+ /*
+ * Create partition context for DEFAULT partition. We can insert values
+ * into this partition in case spaces with values between new partitions.
+ */
+ if (!defaultPartCtx && OidIsValid(defaultPartOid))
+ {
+ /* Indicate that we allocate context for old DEFAULT partition */
+ isOldDefaultPart = true;
+ defaultPartCtx = createSplitPartitionContext(table_open(defaultPartOid, AccessExclusiveLock));
+ }
+
+ econtext = GetPerTupleExprContext(estate);
+
+ /* Create necessary tuple slot. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(splitRel),
+ table_slot_callbacks(splitRel));
+
+ /*
+ * Map computing for moving attributes of split partition to new partition
+ * (for first new partition but other new partitions can use the same
+ * map).
+ */
+ pc = (SplitPartitionContext *) lfirst(list_head(partContexts));
+ tuple_map = convert_tuples_by_name(RelationGetDescr(splitRel),
+ RelationGetDescr(pc->partRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(splitRel, snapshot, 0, NULL);
+
+ /*
+ * Switch to per-tuple memory context and reset it for each tuple
+ * produced, so we don't leak memory.
+ */
+ oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(estate));
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ bool found = false;
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ econtext->ecxt_scantuple = srcslot;
+
+ /* Search partition for current slot srcslot. */
+ foreach(listptr, partContexts)
+ {
+ pc = (SplitPartitionContext *) lfirst(listptr);
+
+ if (pc->partqualstate /* skip DEFAULT partition */ &&
+ ExecCheck(pc->partqualstate, econtext))
+ {
+ found = true;
+ break;
+ }
+ ResetExprContext(econtext);
+ }
+ if (!found)
+ {
+ /* Use DEFAULT partition if it exists. */
+ if (defaultPartCtx)
+ pc = defaultPartCtx;
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_CHECK_VIOLATION),
+ errmsg("can not find partition for split partition row"),
+ errtable(splitRel)));
+ }
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, pc->dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = pc->dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ {
+ bool insertIndexes;
+
+ table_tuple_insert(pc->partRel, insertslot, mycid,
+ ti_options, pc->bistate, &insertIndexes);
+ }
+
+ ResetExprContext(econtext);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ MemoryContextSwitchTo(oldCxt);
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+
+ FreeExecutorState(estate);
+
+ foreach(listptr, partContexts)
+ deleteSplitPartitionContext((SplitPartitionContext *) lfirst(listptr), ti_options);
+
+ /* Need to close table and free buffers for DEFAULT partition. */
+ if (isOldDefaultPart)
+ {
+ Relation defaultPartRel = defaultPartCtx->partRel;
+
+ deleteSplitPartitionContext(defaultPartCtx, ti_options);
+ /* Keep the lock until commit. */
+ table_close(defaultPartRel, NoLock);
+ }
+}
+
/*
* createPartitionTable: create table for new partition with given name
* (newPartName) like table (modelRelName)
@@ -20915,6 +21191,141 @@ createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
NULL);
}
+/*
+ * ALTER TABLE <name> SPLIT PARTITION <partition-name> INTO <partition-list>
+ */
+static void
+ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation splitRel;
+ Oid splitRelOid;
+ char relname[NAMEDATALEN];
+ Oid namespaceId;
+ ListCell *listptr,
+ *listptr2;
+ bool isSameName = false;
+ char tmpRelName[NAMEDATALEN];
+ List *newPartRels = NIL;
+ ObjectAddress object;
+ RangeVar *parentName;
+ Oid defaultPartOid;
+
+ defaultPartOid = get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+
+ /*
+ * We are going to detach and remove this partition: need to use exclusive
+ * lock for prevent DML-queries to the partition.
+ */
+ splitRel = table_openrv(cmd->name, AccessExclusiveLock);
+
+ if (splitRel->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot split non-table partition \"%s\"",
+ RelationGetRelationName(splitRel))));
+
+ splitRelOid = RelationGetRelid(splitRel);
+
+ /* Check descriptions of new partitions. */
+ foreach(listptr, cmd->partlist)
+ {
+ Oid existing_relid;
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ strlcpy(relname, sps->name->relname, NAMEDATALEN);
+
+ /*
+ * Look up the namespace in which we are supposed to create the
+ * partition, check we have permission to create there, lock it
+ * against concurrent drop, and mark stmt->relation as
+ * RELPERSISTENCE_TEMP if a temporary namespace is selected.
+ */
+ namespaceId =
+ RangeVarGetAndCheckCreationNamespace(sps->name, NoLock, NULL);
+
+ /*
+ * This would fail later on anyway, if the relation already exists.
+ * But by catching it here we can emit a nicer error message.
+ */
+ existing_relid = get_relname_relid(relname, namespaceId);
+ if (existing_relid == splitRelOid && !isSameName)
+ /* One new partition can have the same name as split partition. */
+ isSameName = true;
+ else if (existing_relid != InvalidOid)
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("relation \"%s\" already exists", relname)));
+ }
+
+ /* Detach split partition. */
+ RemoveInheritance(splitRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, splitRel, false, defaultPartOid);
+
+ /*
+ * If new partition has the same name as split partition then we should
+ * rename split partition for reuse name.
+ */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ sprintf(tmpRelName, "split-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ RenameRelationInternal(splitRelOid, tmpRelName, false, false);
+
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible after rename.
+ */
+ CommandCounterIncrement();
+ }
+
+ /* Create new partitions (like split partition), without indexes. */
+ parentName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1);
+ foreach(listptr, cmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel;
+
+ createPartitionTable(sps->name, parentName, context);
+
+ /* Open the new partition and acquire exclusive lock on it. */
+ newPartRel = table_openrv(sps->name, AccessExclusiveLock);
+
+ newPartRels = lappend(newPartRels, newPartRel);
+ }
+
+ /* Copy data from split partition to new partitions. */
+ moveSplitTableRows(rel, splitRel, cmd->partlist, newPartRels, defaultPartOid);
+ /* Keep the lock until commit. */
+ table_close(splitRel, NoLock);
+
+ /* Attach new partitions to partitioned table. */
+ forboth(listptr, cmd->partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel = (Relation) lfirst(listptr2);
+
+ /* wqueue = NULL: verification for each cloned constraint is not need. */
+ attachPartitionTable(NULL, rel, newPartRel, sps->bound);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+ }
+
+ /* Drop split partition. */
+ object.classId = RelationRelationId;
+ object.objectId = splitRelOid;
+ object.objectSubId = 0;
+ /* Probably DROP_CASCADE is not needed. */
+ performDeletion(&object, DROP_RESTRICT, 0);
+}
+
/*
* moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
* of the partitioned table (rel) and move rows into the new partition
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index d7ef1d95b9..11c958305a 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -270,6 +270,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
PartitionElem *partelem;
PartitionSpec *partspec;
PartitionBoundSpec *partboundspec;
+ SinglePartitionSpec *singlepartspec;
RoleSpec *rolespec;
PublicationObjSpec *publicationobjectspec;
struct SelectLimit *selectlimit;
@@ -647,6 +648,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
%type <partelem> part_elem
%type <list> part_params
%type <partboundspec> PartitionBoundSpec
+%type <singlepartspec> SinglePartitionSpec
+%type <list> partitions_list
%type <list> hash_partbound
%type <defelt> hash_partbound_elem
@@ -772,7 +775,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
SAVEPOINT SCALAR SCHEMA SCHEMAS SCROLL SEARCH SECOND_P SECURITY SELECT
SEQUENCE SEQUENCES
SERIALIZABLE SERVER SESSION SESSION_USER SET SETS SETOF SHARE SHOW
- SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SOURCE SQL_P STABLE STANDALONE_P
+ SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SOURCE SPLIT SQL_P STABLE STANDALONE_P
START STATEMENT STATISTICS STDIN STDOUT STORAGE STORED STRICT_P STRING_P STRIP_P
SUBSCRIPTION SUBSTRING SUPPORT SYMMETRIC SYSID SYSTEM_P SYSTEM_USER
@@ -2302,6 +2305,23 @@ alter_table_cmds:
| alter_table_cmds ',' alter_table_cmd { $$ = lappend($1, $3); }
;
+partitions_list:
+ SinglePartitionSpec { $$ = list_make1($1); }
+ | partitions_list ',' SinglePartitionSpec { $$ = lappend($1, $3); }
+ ;
+
+SinglePartitionSpec:
+ PARTITION qualified_name PartitionBoundSpec
+ {
+ SinglePartitionSpec *n = makeNode(SinglePartitionSpec);
+
+ n->name = $2;
+ n->bound = $3;
+
+ $$ = n;
+ }
+ ;
+
partition_cmd:
/* ALTER TABLE <name> ATTACH PARTITION <table_name> FOR VALUES */
ATTACH PARTITION qualified_name PartitionBoundSpec
@@ -2346,6 +2366,20 @@ partition_cmd:
n->def = (Node *) cmd;
$$ = (Node *) n;
}
+ /* ALTER TABLE <name> SPLIT PARTITION <partition_name> INTO () */
+ | SPLIT PARTITION qualified_name INTO '(' partitions_list ')'
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_SplitPartition;
+ cmd->name = $3;
+ cmd->bound = NULL;
+ cmd->partlist = $6;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
/* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
| MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
{
@@ -17614,6 +17648,7 @@ unreserved_keyword:
| SKIP
| SNAPSHOT
| SOURCE
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
@@ -18247,6 +18282,7 @@ bare_label_keyword:
| SNAPSHOT
| SOME
| SOURCE
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index 48a23c7ca4..88a4a41186 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -136,7 +136,7 @@ static void transformConstraintAttrs(CreateStmtContext *cxt,
List *constraintList);
static void transformColumnType(CreateStmtContext *cxt, ColumnDef *column);
static void setSchemaName(const char *context_schema, char **stmt_schema_name);
-static void transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd);
+static void transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound);
static List *transformPartitionRangeBounds(ParseState *pstate, List *blist,
Relation parent);
static void validateInfiniteBounds(ParseState *pstate, List *blist);
@@ -3415,6 +3415,43 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForSplit
+ * Analyze the ALTER TABLLE ... SPLIT PARTITION command
+ *
+ * For each new partition sps->bound is set to the transformed value of bound.
+ * Does checks for bounds of new partitions.
+ */
+static void
+transformPartitionCmdForSplit(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Relation parent = cxt->rel;
+ Oid splitPartOid;
+ ListCell *listptr;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ /* Transform partition bounds for all partitions in the list: */
+ foreach(listptr, partcmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ cxt->partbound = NULL;
+ transformPartitionCmd(cxt, sps->bound);
+ /* Assign transformed value of the partition bound. */
+ sps->bound = cxt->partbound;
+ }
+
+ splitPartOid = RangeVarGetRelid(partcmd->name, NoLock, false);
+
+ /* Then we should check partitions with transformed bounds. */
+ check_partitions_for_split(parent, splitPartOid, partcmd->name, partcmd->partlist, cxt->pstate);
+}
+
+
/*
* transformPartitionCmdForMerge
* Analyze the ALTER TABLLE ... MERGE PARTITIONS command
@@ -3751,7 +3788,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
- transformPartitionCmd(&cxt, partcmd);
+ transformPartitionCmd(&cxt, partcmd->bound);
/* assign transformed value of the partition bound */
partcmd->bound = cxt.partbound;
}
@@ -3759,6 +3796,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_SplitPartition:
case AT_MergePartitions:
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
@@ -3767,7 +3805,11 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("list of new partitions should contains at least two items")));
- transformPartitionCmdForMerge(&cxt, partcmd);
+
+ if (cmd->subtype == AT_SplitPartition)
+ transformPartitionCmdForSplit(&cxt, partcmd);
+ else
+ transformPartitionCmdForMerge(&cxt, partcmd);
newcmds = lappend(newcmds, cmd);
break;
}
@@ -4172,13 +4214,13 @@ setSchemaName(const char *context_schema, char **stmt_schema_name)
/*
* transformPartitionCmd
- * Analyze the ATTACH/DETACH PARTITION command
+ * Analyze the ATTACH/DETACH/SPLIT PARTITION command
*
- * In case of the ATTACH PARTITION command, cxt->partbound is set to the
- * transformed value of cmd->bound.
+ * In case of the ATTACH/SPLIT PARTITION command, cxt->partbound is set to the
+ * transformed value of bound.
*/
static void
-transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
+transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound)
{
Relation parentRel = cxt->rel;
@@ -4187,9 +4229,9 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
case RELKIND_PARTITIONED_TABLE:
/* transform the partition bound, if any */
Assert(RelationGetPartitionKey(parentRel) != NULL);
- if (cmd->bound != NULL)
+ if (bound != NULL)
cxt->partbound = transformPartitionBound(cxt->pstate, parentRel,
- cmd->bound);
+ bound);
break;
case RELKIND_PARTITIONED_INDEX:
@@ -4197,7 +4239,7 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
* A partitioned index cannot have a partition bound set. ALTER
* INDEX prevents that with its grammar, but not ALTER TABLE.
*/
- if (cmd->bound != NULL)
+ if (bound != NULL)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("\"%s\" is not a partitioned table",
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index 9ed80d721e..c36e26ba4b 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -5040,10 +5040,69 @@ check_two_partitions_bounds_range(Relation parent,
}
}
+/*
+ * check_partitions_not_overlap_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * This is a helper function for check_partitions_for_split().
+ * Checks that the values of the new partitions do not overlap.
+ *
+ * parent: partitioned table
+ * parts: array of SinglePartitionSpec structs with info about split partitions
+ * nparts: size of array "parts"
+ */
+static void
+check_partitions_not_overlap_list(Relation parent,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key PG_USED_FOR_ASSERTS_ONLY = RelationGetPartitionKey(parent);
+ int overlap_location = -1;
+ int i,
+ j;
+ SinglePartitionSpec *sps1,
+ *sps2;
+ List *overlap;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ for (i = 0; i < nparts; i++)
+ {
+ sps1 = parts[i];
+
+ for (j = i + 1; j < nparts; j++)
+ {
+ sps2 = parts[j];
+
+ /*
+ * Calculate intersection between values of two partitions.
+ */
+ overlap = list_intersection(sps1->bound->listdatums,
+ sps2->bound->listdatums);
+ if (list_length(overlap) > 0)
+ {
+ Const *val = (Const *) lfirst(list_head(overlap));
+
+ overlap_location = val->location;
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another new partition \"%s\"",
+ sps1->name->relname, sps2->name->relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ }
+ }
+}
+
/*
* get_partition_bound_spec
*
* Returns description of partition with Oid "partOid" and name "name".
+ *
+ * partOid: partition Oid
+ * name: partition name
*/
static PartitionBoundSpec *
get_partition_bound_spec(Oid partOid, RangeVar *name)
@@ -5076,6 +5135,604 @@ get_partition_bound_spec(Oid partOid, RangeVar *name)
return boundspec;
}
+/*
+ * check_partition_bounds_for_split_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * Checks that bounds of new partition "spec" is inside bounds of split
+ * partition (with Oid splitPartOid). If first=true (this means that "spec" is
+ * the first of new partitions) then lower bound of "spec" should be equal (or
+ * greater than or equal in case defaultPart=true) to lower bound of split
+ * partition. If last=true (this means that "spec" is the last of new
+ * partitions) then upper bound of of "spec" should be equal (or less than or
+ * equal in case defaultPart=true) to upper bound of split partition.
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * first: true in case new partition "spec" is first of new partitions
+ * last: true in case new partition "spec" is last of new partitions
+ * defaultPart: true in case partitioned table has DEFAULT partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_range(Relation parent,
+ char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ bool first,
+ bool last,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *lower,
+ *upper;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+ Assert(spec->strategy == PARTITION_STRATEGY_RANGE);
+
+ lower = make_one_partition_rbound(key, -1, spec->lowerdatums, true);
+ upper = make_one_partition_rbound(key, -1, spec->upperdatums, false);
+
+ /*
+ * First check if the resulting range would be empty with specified lower
+ * and upper bounds. partition_rbound_cmp cannot return zero here, since
+ * the lower-bound flags are different.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, upper);
+ Assert(cmpval != 0);
+ if (cmpval > 0)
+ {
+ /* Point to problematic key in the lower datums list. */
+ PartitionRangeDatum *datum = list_nth(spec->lowerdatums, cmpval - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("empty range bound specified for partition \"%s\"",
+ relname),
+ errdetail("Specified lower bound %s is greater than or equal to upper bound %s.",
+ get_range_partbound_string(spec->lowerdatums),
+ get_range_partbound_string(spec->upperdatums)),
+ parser_errposition(pstate, datum->location)));
+ }
+
+ /* Need to check first and last partitions (from set of new partitions) */
+ if (first || last)
+ {
+ PartitionBoundSpec *split_spec = get_partition_bound_spec(splitPartOid, splitPartName);
+ bool overlap = false;
+
+ if (first)
+ {
+ PartitionRangeBound *split_lower;
+
+ split_lower = make_one_partition_rbound(key, -1, split_spec->lowerdatums, true);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, split_lower);
+
+ /*
+ * Lower bound of "spec" should be equal (or greater than or equal
+ * in case defaultPart=true) to lower bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ overlap = true;
+ }
+ else
+ {
+ PartitionRangeBound *split_upper;
+
+ split_upper = make_one_partition_rbound(key, -1, split_spec->upperdatums, false);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ upper->datums, upper->kind,
+ false, split_upper);
+
+ /*
+ * Upper bound of of "spec" should be equal (or less than or equal
+ * in case defaultPart=true) to upper bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval > 0))
+ overlap = true;
+ }
+
+ if (overlap)
+ {
+ PartitionRangeDatum *datum;
+
+ datum = list_nth(first ? spec->lowerdatums : spec->upperdatums, abs(cmpval) - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("%s bound of partition \"%s\" is %s %s bound of split partition",
+ first ? "lower" : "upper",
+ relname,
+ defaultPart ? (first ? "less than" : "greater than") : "not equals to",
+ first ? "lower" : "upper"),
+ parser_errposition(pstate, datum->location)));
+ }
+ }
+}
+
+/*
+ * check_partition_bounds_for_split_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that bounds of new partition is inside bounds of split partition
+ * (with Oid splitPartOid).
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_list(Relation parent, char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int with = -1;
+ bool overlap = false;
+ int overlap_location = -1;
+ ListCell *cell;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+ Assert(spec->strategy == PARTITION_STRATEGY_LIST);
+ Assert(boundinfo && boundinfo->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Search each value of new partition "spec" in existing partitions. All
+ * of them should be in split partition (with Oid splitPartOid).
+ */
+ foreach(cell, spec->listdatums)
+ {
+ Const *val = lfirst_node(Const, cell);
+
+ overlap_location = val->location;
+ if (!val->constisnull)
+ {
+ int offset;
+ bool equal;
+
+ offset = partition_list_bsearch(&key->partsupfunc[0],
+ key->partcollation,
+ boundinfo,
+ val->constvalue,
+ &equal);
+ if (offset >= 0 && equal)
+ {
+ with = boundinfo->indexes[offset];
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have this value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ else if (partition_bound_accepts_nulls(boundinfo))
+ {
+ with = boundinfo->null_index;
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have NULL value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+
+ if (overlap)
+ {
+ Assert(with >= 0);
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another (not split) partition \"%s\"",
+ relname, get_rel_name(partdesc->oids[with])),
+ parser_errposition(pstate, overlap_location)));
+ }
+}
+
+/*
+ * find_value_in_new_partitions_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Function returns true in case any of new partitions contains value "value".
+ *
+ * partsupfunc: information about comparison function associated with the partition key
+ * partcollation: partitioning collation
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * value: the value that we are looking for
+ * isnull: true if the value that we are looking for is NULL
+ */
+static bool
+find_value_in_new_partitions_list(FmgrInfo *partsupfunc,
+ Oid *partcollation,
+ SinglePartitionSpec **parts,
+ int nparts,
+ Datum value,
+ bool isnull)
+{
+ ListCell *valptr;
+ int i;
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = parts[i];
+
+ foreach(valptr, sps->bound->listdatums)
+ {
+ Const *val = lfirst_node(Const, valptr);
+
+ if (isnull && val->constisnull)
+ return true;
+
+ if (!isnull && !val->constisnull)
+ {
+ if (DatumGetInt32(FunctionCall2Coll(&partsupfunc[0],
+ partcollation[0],
+ val->constvalue,
+ value)) == 0)
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/*
+ * check_parent_values_in_new_partitions
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that all values of split partition (with Oid partOid) contains in new
+ * partitions.
+ *
+ * parent: partitioned table
+ * partOid: split partition Oid
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_parent_values_in_new_partitions(Relation parent,
+ Oid partOid,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int i;
+ bool found = true;
+ bool searchNull = false;
+ Datum datum = PointerGetDatum(NULL);
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Special processing for NULL value. Search NULL-value if it contains
+ * split partition (partOid).
+ */
+ if (partition_bound_accepts_nulls(boundinfo) &&
+ partdesc->oids[boundinfo->null_index] == partOid)
+ {
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, true))
+ {
+ found = false;
+ searchNull = true;
+ }
+ }
+
+ /*
+ * Search all values of split partition with partOid in PartitionDesc of
+ * partitionde table.
+ */
+ for (i = 0; i < boundinfo->ndatums; i++)
+ {
+ if (partdesc->oids[boundinfo->indexes[i]] == partOid)
+ {
+ /* We found value that split partition contains. */
+ datum = boundinfo->datums[i][0];
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, false))
+ {
+ found = false;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ {
+ Const *notFoundVal;
+
+ if (!searchNull)
+ /* Make Const for get string representation of not found value. */
+ notFoundVal = makeConst(key->parttypid[0],
+ key->parttypmod[0],
+ key->parttypcoll[0],
+ key->parttyplen[0],
+ datum,
+ false, /* isnull */
+ key->parttypbyval[0]);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partitions not have value %s but split partition has",
+ searchNull ? "NULL" : get_list_partvalue_string(notFoundVal))));
+ }
+}
+
+/*
+ * check_partitions_for_split
+ *
+ * Checks new partitions for SPLIT PARTITIONS command:
+ * 1. DEFAULT partition should be one.
+ * 2. New partitions should have different names
+ * (with existing partitions too).
+ * 3. Bounds of new partitions should not overlap with new and existing
+ * partitions.
+ * 4. In case split partition is DEFAULT partition, one of new partitions
+ * should be DEFAULT.
+ * 5. In case new partitions or existing partitions contains DEFAULT
+ * partition, new partitions can have any bounds inside split
+ * partition bound (can be spaces between partitions bounds).
+ * 6. In case partitioned table does not have DEFAULT partition, DEFAULT
+ * partition can be defined as one of new partition.
+ * 7. In case new partitions not contains DEFAULT partition and
+ * partitioned table does not have DEFAULT partition the following
+ * should be true: sum bounds of new partitions should be equal
+ * to bound of split partition.
+ *
+ * parent: partitioned table
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * list: list of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate)
+{
+ PartitionKey key;
+ char strategy;
+ Oid defaultPartOid;
+ bool isSplitPartDefault;
+ bool existsDefaultPart;
+ ListCell *listptr;
+ int default_index = -1;
+ int i,
+ j;
+ SinglePartitionSpec **new_parts;
+ SinglePartitionSpec *spsPrev = NULL;
+ int nparts = 0;
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ switch (strategy)
+ {
+ case PARTITION_STRATEGY_LIST:
+ case PARTITION_STRATEGY_RANGE:
+ {
+ /*
+ * Make array new_parts with new partitions except DEFAULT
+ * partition.
+ */
+ new_parts = (SinglePartitionSpec **)
+ palloc0(list_length(partlist) * sizeof(SinglePartitionSpec *));
+ i = 0;
+ foreach(listptr, partlist)
+ {
+ SinglePartitionSpec *sps =
+ (SinglePartitionSpec *) lfirst(listptr);
+
+ if (sps->bound->is_default)
+ {
+ if (default_index >= 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("DEFAULT partition should be one")),
+ parser_errposition(pstate, sps->name->location));
+ default_index = i;
+ }
+ else
+ {
+ new_parts[nparts++] = sps;
+ }
+ i++;
+ }
+ }
+ break;
+
+ case PARTITION_STRATEGY_HASH:
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be split")));
+ break;
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ break;
+ }
+
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ PartitionRangeBound **lower_bounds;
+ SinglePartitionSpec **tmp_new_parts;
+
+ /*
+ * For simplify check for ranges of new partitions need to sort all
+ * partitions in ascending order of them bounds (we compare upper
+ * bound only).
+ */
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /* Create array of lower bounds. */
+ for (i = 0; i < nparts; i++)
+ {
+ lower_bounds[i] = make_one_partition_rbound(key, i,
+ new_parts[i]->bound->lowerdatums, true);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Reorder array of partitions. */
+ tmp_new_parts = new_parts;
+ new_parts = (SinglePartitionSpec **)
+ palloc0(nparts * sizeof(SinglePartitionSpec *));
+ for (i = 0; i < nparts; i++)
+ new_parts[i] = tmp_new_parts[lower_bounds[i]->index];
+
+ pfree(tmp_new_parts);
+ pfree(lower_bounds);
+ }
+
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(parent, true));
+
+ /* isSplitPartDefault flag: is split partition a DEFAULT partition? */
+ isSplitPartDefault = (defaultPartOid == splitPartOid);
+
+ if (isSplitPartDefault && default_index < 0)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("any partition in the list should be DEFAULT because split partition is DEFAULT")),
+ parser_errposition(pstate, ((SinglePartitionSpec *) linitial(partlist))->name->location));
+ }
+ else if (!isSplitPartDefault && (default_index >= 0) && OidIsValid(defaultPartOid))
+ {
+ SinglePartitionSpec *spsDef =
+ (SinglePartitionSpec *) list_nth(partlist, default_index);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition cannot be DEFAULT because DEFAULT partition already exists")),
+ parser_errposition(pstate, spsDef->name->location));
+ }
+
+ /* Indicator that partitioned table has (or will have) DEFAULT partition */
+ existsDefaultPart = OidIsValid(defaultPartOid) || (default_index >= 0);
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = new_parts[i];
+
+ if (isSplitPartDefault)
+ {
+ /*
+ * In case split partition is DEFAULT partition we can use any
+ * free ranges - as when creating a new partition.
+ */
+ check_new_partition_bound(sps->name->relname, parent, sps->bound,
+ pstate);
+ }
+ else
+ {
+ /*
+ * Checks that bound of current partition is inside bound of split
+ * partition. For range partitioning: checks that upper bound of
+ * previous partition is equal to lower bound of current
+ * partition. For list partitioning: checks that split partition
+ * contains all values of current partition.
+ */
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ bool first = (i == 0);
+ bool last = (i == (nparts - 1));
+
+ check_partition_bounds_for_split_range(parent, sps->name->relname, sps->bound,
+ splitPartOid, splitPartName,
+ first, last,
+ existsDefaultPart, pstate);
+ }
+ else
+ check_partition_bounds_for_split_list(parent, sps->name->relname,
+ sps->bound, splitPartOid, pstate);
+ }
+
+ /* Ranges of new partitions should not overlap. */
+ if (strategy == PARTITION_STRATEGY_RANGE && spsPrev)
+ check_two_partitions_bounds_range(parent, spsPrev->name, spsPrev->bound,
+ sps->name, sps->bound, existsDefaultPart, pstate);
+
+ spsPrev = sps;
+
+ /* Check: new partitions should have different names. */
+ for (j = i + 1; j < nparts; j++)
+ {
+ SinglePartitionSpec *sps2 = new_parts[j];
+
+ if (equal(sps->name, sps2->name))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("name \"%s\" already used", sps2->name->relname)),
+ parser_errposition(pstate, sps2->name->location));
+ }
+ }
+
+ if (strategy == PARTITION_STRATEGY_LIST)
+ {
+ /* Values of new partitions should not overlap. */
+ check_partitions_not_overlap_list(parent, new_parts, nparts,
+ pstate);
+
+ /*
+ * Need to check that all values of split partition contains in new
+ * partitions. Skip this check if DEFAULT partition exists.
+ */
+ if (!existsDefaultPart)
+ check_parent_values_in_new_partitions(parent, splitPartOid,
+ new_parts, nparts, pstate);
+ }
+
+ pfree(new_parts);
+}
+
/*
* calculate_partition_bound_for_merge
*
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index 0f7f40c50f..150ff7abd5 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -13066,3 +13066,21 @@ get_range_partbound_string(List *bound_datums)
return buf->data;
}
+
+/*
+ * get_list_partvalue_string
+ * A C string representation of one list partition value
+ */
+char *
+get_list_partvalue_string(Const *val)
+{
+ deparse_context context;
+ StringInfo buf = makeStringInfo();
+
+ memset(&context, 0, sizeof(deparse_context));
+ context.buf = buf;
+
+ get_const_expr(val, &context, -1);
+
+ return buf->data;
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index abb705d11d..8602f791ca 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -2345,6 +2345,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_SplitPartition, /* SPLIT PARTITION */
AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 2304165408..6f19f166a6 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -416,6 +416,7 @@ PG_KEYWORD("smallint", SMALLINT, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("snapshot", SNAPSHOT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("some", SOME, RESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("source", SOURCE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("split", SPLIT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("sql", SQL_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("stable", STABLE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("standalone", STANDALONE_P, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 0329d7bd84..9d2a26705f 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,6 +143,11 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate);
extern void calculate_partition_bound_for_merge(Relation parent,
List *partNames,
List *partOids,
diff --git a/src/include/utils/ruleutils.h b/src/include/utils/ruleutils.h
index 161fb5ef02..6d86080622 100644
--- a/src/include/utils/ruleutils.h
+++ b/src/include/utils/ruleutils.h
@@ -49,4 +49,6 @@ extern char *get_range_partbound_string(List *bound_datums);
extern char *pg_get_statisticsobjdef_string(Oid statextid);
+extern char *get_list_partvalue_string(Const *val);
+
#endif /* RULEUTILS_H */
diff --git a/src/test/isolation/expected/partition-split.out b/src/test/isolation/expected/partition-split.out
new file mode 100644
index 0000000000..5d9e8b0925
--- /dev/null
+++ b/src/test/isolation/expected/partition-split.out
@@ -0,0 +1,190 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s1b s1splt s2b s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2brr s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2bs s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2b s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2brr s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2bs s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2b s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2brr s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2bs s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 8bcaa8a625..0342eb39e4 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -104,6 +104,7 @@ test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
test: partition-merge
+test: partition-split
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-split.spec b/src/test/isolation/specs/partition-split.spec
new file mode 100644
index 0000000000..087239a4a1
--- /dev/null
+++ b/src/test/isolation/specs/partition-split.spec
@@ -0,0 +1,54 @@
+# Verify that SPLIT operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1splt { ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20)); }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s1 starts SPLIT PARTITION then s2 trying to insert row and
+# waits until s1 finished SPLIT operation.
+
+permutation s1b s1splt s2b s2i s1c s2c s2s
+permutation s1b s1splt s2brr s2i s1c s2c s2s
+permutation s1b s1splt s2bs s2i s1c s2c s2s
+
+permutation s1brr s1splt s2b s2i s1c s2c s2s
+permutation s1brr s1splt s2brr s2i s1c s2c s2s
+permutation s1brr s1splt s2bs s2i s1c s2c s2s
+
+permutation s1bs s1splt s2b s2i s1c s2c s2s
+permutation s1bs s1splt s2brr s2i s1c s2c s2s
+permutation s1bs s1splt s2bs s2i s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 69920757b2..265ef2a547 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_SplitPartition:
+ strtype = "SPLIT PARTITION";
+ break;
case AT_MergePartitions:
strtype = "MERGE PARTITIONS";
break;
diff --git a/src/test/regress/expected/partition_split.out b/src/test/regress/expected/partition_split.out
new file mode 100644
index 0000000000..7eb52f6fee
--- /dev/null
+++ b/src/test/regress/expected/partition_split.out
@@ -0,0 +1,1417 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_xxx" does not exist
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_jan2022" already exists
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: invalid bound specification for a range partition
+LINE 2: (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '202...
+ ^
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: empty range bound specified for partition "sales_mar2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+DETAIL: Specified lower bound ('03-01-2022') is greater than or equal to upper bound ('02-01-2022').
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+ERROR: list of new partitions should contains at least two items
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO...
+ ^
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb_mar_apr2022" already used
+LINE 3: PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03...
+ ^
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb2022" already used
+LINE 3: PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+LINE 4: ... sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-0...
+ ^
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_feb2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO...
+ ^
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO...
+ ^
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(4 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+ERROR: relation "sales_jan_feb2022" does not exist
+LINE 1: SELECT * FROM sales_jan_feb2022;
+ ^
+DROP TABLE sales_date CASCADE;
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 7 | Li | 175 | 03-08-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 11 | Trump | 380 | 04-06-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(11 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+-----------------------------+------------+----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx | | CREATE INDEX sales_others_sales_date_idx ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_feb2022 | sales_feb2022_sales_date_idx | | CREATE INDEX sales_feb2022_sales_date_idx ON partition_split_schema.sales_feb2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_mar2022 | sales_mar2022_sales_date_idx | | CREATE INDEX sales_mar2022_sales_date_idx ON partition_split_schema.sales_mar2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_apr2022 | sales_apr2022_sales_date_idx | | CREATE INDEX sales_apr2022_sales_date_idx ON partition_split_schema.sales_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+------------------------------+------------+-----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx1 | | CREATE INDEX sales_others_sales_date_idx1 ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211230) TO (2022...
+ ^
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+LINE 4: PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20...
+ ^
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211210) TO (2021...
+ ^
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211201) TO (2022...
+ ^
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+LINE 2: (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20...
+ ^
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_sales_amount_check"
+DETAIL: Failing row contains (1, 0, 03-11-2022).
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(-1) is not present in table "salesmans".
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(40) is not present in table "salesmans".
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+SELECT * FROM salesmans1_2;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans2_3;
+ salesman_id | salesman_name
+-------------+---------------
+ 2 | Ivanov
+(1 row)
+
+SELECT * FROM salesmans3_4;
+ salesman_id | salesman_name
+-------------+---------------
+ 3 | May
+(1 row)
+
+SELECT * FROM salesmans4_5;
+ salesman_id | salesman_name
+-------------+---------------
+ 4 | Ford
+(1 row)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+(2 rows)
+
+select * from salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+select * from salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_east" would overlap with another (not split) partition "sales_nord"
+LINE 3: ...ALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'...
+ ^
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+LINE 2: (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk...
+ ^
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+LINE 2: ...est FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ ^
+DROP TABLE sales_list;
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partitions not have value NULL but split partition has
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+ERROR: new partitions not have value 'Volgograd' but split partition has
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_west;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+(4 rows)
+
+SELECT * FROM sales_east;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+(2 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_central;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(4 rows)
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 026e7a7767..7cd4deda9b 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_split partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_split.sql b/src/test/regress/sql/partition_split.sql
new file mode 100644
index 0000000000..40c71889b6
--- /dev/null
+++ b/src/test/regress/sql/partition_split.sql
@@ -0,0 +1,833 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+
+DROP TABLE sales_date CASCADE;
+
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_others;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+
+SELECT * FROM salesmans1_2;
+SELECT * FROM salesmans2_3;
+SELECT * FROM salesmans3_4;
+SELECT * FROM salesmans4_5;
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+select * from salesmans01_10;
+select * from salesmans10_20;
+select * from salesmans20_30;
+select * from salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+DROP TABLE sales_list;
+
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_west;
+SELECT * FROM sales_east;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_central;
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index a899944dcd..1c9265d575 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2667,6 +2667,7 @@ SpecialJoinInfo
SpinDelayStatus
SplitInterval
SplitLR
+SplitPartitionContext
SplitPageLayout
SplitPoint
SplitTextOutputData
--
2.40.1.windows.1
From 0164d86e4d62cb35f514c1c32ff1659aedfa42c3 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Tue, 28 Mar 2023 10:50:19 +0300
Subject: [PATCH v29 3/3] Documentation for ALTER TABLE SPLIT PARTITION/MERGE
PARTITIONS commands
---
doc/src/sgml/ref/alter_table.sgml | 138 +++++++++++++++++++++++++++++-
1 file changed, 135 insertions(+), 3 deletions(-)
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 6cdcd779ef..945228d84b 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,13 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO
+ (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT },
+ PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
+ INTO <replaceable class="parameter">partition_name</replaceable>
<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>
@@ -1118,14 +1125,113 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-split-partition">
+ <term><literal>SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }, PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])</literal></term>
+
+ <listitem>
+ <para>
+ This form splits a single partition of the target table. Hash-partitioning
+ is not supported. Bounds of new partitions should not overlap with new and
+ existing partitions (except <replaceable class="parameter">partition_name</replaceable>).
+ If the split partition is a DEFAULT partition, one of the new partitions must be DEFAULT.
+ In case one of the new partitions or one of existing partitions is DEFAULT,
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have spaces
+ between partitions bounds. If the partitioned table does not have a DEFAULT
+ partition, the DEFAULT partition can be defined as one of the new partitions.
+ </para>
+ <para>
+ In case new partitions do not contain a DEFAULT partition and the partitioned table
+ does not have a DEFAULT partition, the following must be true: sum bounds of
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... should be
+ equal to bound of split partition <replaceable class="parameter">partition_name</replaceable>.
+ One of the new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have
+ the same name as split partition <replaceable class="parameter">partition_name</replaceable>
+ (this is suitable in case of splitting a DEFAULT partition: we split it, but after
+ splitting we have a partition with the same name).
+ Only simple, non-partitioned partition can be split.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="sql-altertable-merge-partitions">
+ <term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
+
+ <listitem>
+ <para>
+ This form merge several partitions into one partition of the target table.
+ Hash-partitioning is not supported. If DEFAULT partition is not in the
+ list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ For range-partitioned tables is necessary that the ranges
+ of the partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] can
+ be merged into one range without spaces and overlaps (otherwise an error
+ will be generated). The combined range will be the range for the partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For list-partitioned tables the values lists of all partitions
+ <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] are
+ combined and form a list of values of partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ If DEFAULT partition is in the list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ The partition <replaceable class="parameter">partition_name</replaceable>
+ will be the DEFAULT partition.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For range- and list-partitioned tables the ranges and lists of values
+ of the merged partitions can be any.
+ </para>
+ </listitem>
+ </itemizedlist>
+ The new partition <replaceable class="parameter">partition_name</replaceable>
+ can have the same name as one of the merged partitions. Only simple,
+ non-partitioned partitions can be merged.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
</variablelist>
</para>
<para>
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
- <literal>ATTACH PARTITION</literal>, and
- <literal>DETACH PARTITION</literal> can be combined into
+ <literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
+ <literal>SPLIT PARTITION</literal>, and <literal>MERGE PARTITIONS</literal>
+ can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1368,7 +1474,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<term><replaceable class="parameter">partition_name</replaceable></term>
<listitem>
<para>
- The name of the table to attach as a new partition or to detach from this table.
+ The name of the table to attach as a new partition or to detach from this table,
+ or the name of split partition, or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1784,6 +1891,31 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To split a single partition of the range-partitioned table:
+<programlisting>
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2023 INTO
+ (PARTITION sales_feb2023 FOR VALUES FROM ('2023-02-01') TO ('2023-03-01'),
+ PARTITION sales_mar2023 FOR VALUES FROM ('2023-03-01') TO ('2023-04-01'),
+ PARTITION sales_apr2023 FOR VALUES FROM ('2023-04-01') TO ('2023-05-01'));
+</programlisting></para>
+
+ <para>
+ To split a single partition of the list-partitioned table:
+<programlisting>
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+</programlisting></para>
+
+ <para>
+ To merge several partitions into one partition of the target table:
+<programlisting>
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central)
+ INTO sales_all;
+</programlisting></para>
+
</refsect1>
<refsect1>
--
2.40.1.windows.1
Attachments:
[text/plain] v29-0001-ALTER-TABLE-MERGE-PARTITIONS-command.patch (105.0K, ../../[email protected]/2-v29-0001-ALTER-TABLE-MERGE-PARTITIONS-command.patch)
download | inline diff:
From c385b3e8c1aa96036d30ab1bfdbe22b1bde01524 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 16:06:03 +0300
Subject: [PATCH v29 1/3] ALTER TABLE MERGE PARTITIONS command
---
src/backend/commands/tablecmds.c | 353 ++++++++-
src/backend/parser/gram.y | 22 +-
src/backend/parser/parse_utilcmd.c | 89 +++
src/backend/partitioning/partbounds.c | 207 +++++
src/include/nodes/parsenodes.h | 14 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 6 +
.../isolation/expected/partition-merge.out | 199 +++++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-merge.spec | 54 ++
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_merge.out | 736 ++++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_merge.sql | 434 +++++++++++
src/tools/pgindent/typedefs.list | 1 +
15 files changed, 2103 insertions(+), 19 deletions(-)
create mode 100644 src/test/isolation/expected/partition-merge.out
create mode 100644 src/test/isolation/specs/partition-merge.spec
create mode 100644 src/test/regress/expected/partition_merge.out
create mode 100644 src/test/regress/sql/partition_merge.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index a28f405e27..9914fc0d9a 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,8 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context);
/* ----------------------------------------------------------------
* DefineRelation
@@ -4746,6 +4748,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_MergePartitions:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5165,6 +5171,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_MergePartitions:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5562,6 +5573,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_MergePartitions:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecMergePartitions(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -6556,6 +6575,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_MergePartitions:
+ return "MERGE PARTITIONS";
case AT_AddIdentity:
return "ALTER COLUMN ... ADD IDENTITY";
case AT_SetIdentity:
@@ -19051,6 +19072,37 @@ QueuePartitionConstraintValidation(List **wqueue, Relation scanrel,
}
}
+/*
+ * attachPartitionTable: attach new partition to partitioned table
+ *
+ * wqueue: the ALTER TABLE work queue; can be NULL when not running as part
+ * of an ALTER TABLE sequence.
+ * rel: partitioned relation;
+ * attachrel: relation of attached partition;
+ * bound: bounds of attached relation.
+ */
+static void
+attachPartitionTable(List **wqueue, Relation rel, Relation attachrel, PartitionBoundSpec *bound)
+{
+ /* OK to create inheritance. Rest of the checks performed there */
+ CreateInheritance(attachrel, rel, true);
+
+ /* Update the pg_class entry. */
+ StorePartitionBound(attachrel, rel, bound);
+
+ /* Ensure there exists a correct set of indexes in the partition. */
+ AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
+
+ /* and triggers */
+ CloneRowTriggersToPartition(rel, attachrel);
+
+ /*
+ * Clone foreign key constraints. Callee is responsible for setting up
+ * for phase 3 constraint verification.
+ */
+ CloneForeignKeyConstraints(wqueue, rel, attachrel);
+}
+
/*
* ALTER TABLE <name> ATTACH PARTITION <partition-name> FOR VALUES
*
@@ -19253,23 +19305,8 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd,
check_new_partition_bound(RelationGetRelationName(attachrel), rel,
cmd->bound, pstate);
- /* OK to create inheritance. Rest of the checks performed there */
- CreateInheritance(attachrel, rel, true);
-
- /* Update the pg_class entry. */
- StorePartitionBound(attachrel, rel, cmd->bound);
-
- /* Ensure there exists a correct set of indexes in the partition. */
- AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
-
- /* and triggers */
- CloneRowTriggersToPartition(rel, attachrel);
-
- /*
- * Clone foreign key constraints. Callee is responsible for setting up
- * for phase 3 constraint verification.
- */
- CloneForeignKeyConstraints(wqueue, rel, attachrel);
+ /* Attach a new partition to the partitioned table. */
+ attachPartitionTable(wqueue, rel, attachrel, cmd->bound);
/*
* Generate partition constraint from the partition bound specification.
@@ -20823,3 +20860,285 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+
+/*
+ * createPartitionTable: create table for new partition with given name
+ * (newPartName) like table (modelRelName)
+ *
+ * Emulates command: CREATE TABLE <newPartName> (LIKE <modelRelName>
+ * INCLUDING ALL EXCLUDING INDEXES EXCLUDING IDENTITY)
+ */
+static void
+createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
+ AlterTableUtilityContext *context)
+{
+ CreateStmt *createStmt;
+ TableLikeClause *tlc;
+ PlannedStmt *wrapper;
+
+ createStmt = makeNode(CreateStmt);
+ createStmt->relation = newPartName;
+ createStmt->tableElts = NIL;
+ createStmt->inhRelations = NIL;
+ createStmt->constraints = NIL;
+ createStmt->options = NIL;
+ createStmt->oncommit = ONCOMMIT_NOOP;
+ createStmt->tablespacename = NULL;
+ createStmt->if_not_exists = false;
+
+ tlc = makeNode(TableLikeClause);
+ tlc->relation = modelRelName;
+
+ /*
+ * Indexes will be inherited on "attach new partitions" stage, after data
+ * moving.
+ */
+ tlc->options = CREATE_TABLE_LIKE_ALL & ~(CREATE_TABLE_LIKE_INDEXES | CREATE_TABLE_LIKE_IDENTITY);
+ tlc->relationOid = InvalidOid;
+ createStmt->tableElts = lappend(createStmt->tableElts, tlc);
+
+ /* Need to make a wrapper PlannedStmt. */
+ wrapper = makeNode(PlannedStmt);
+ wrapper->commandType = CMD_UTILITY;
+ wrapper->canSetTag = false;
+ wrapper->utilityStmt = (Node *) createStmt;
+ wrapper->stmt_location = context->pstmt->stmt_location;
+ wrapper->stmt_len = context->pstmt->stmt_len;
+
+ ProcessUtility(wrapper,
+ context->queryString,
+ false,
+ PROCESS_UTILITY_SUBCOMMAND,
+ NULL,
+ NULL,
+ None_Receiver,
+ NULL);
+}
+
+/*
+ * moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
+ * of the partitioned table (rel) and move rows into the new partition
+ * (newPartRel).
+ */
+static void
+moveMergedTablesRows(Relation rel, List *mergingPartitionsList,
+ Relation newPartRel)
+{
+ CommandId mycid;
+
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ ListCell *listptr;
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot;
+
+ mycid = GetCurrentCommandId(true);
+
+ /* Prepare a BulkInsertState for table_tuple_insert. */
+ bistate = GetBulkInsertState();
+
+ /* Create necessary tuple slot. */
+ dstslot = MakeSingleTupleTableSlot(RelationGetDescr(newPartRel),
+ table_slot_callbacks(newPartRel));
+ ExecStoreAllNullTuple(dstslot);
+
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+ TupleTableSlot *srcslot;
+ TupleConversionMap *tuple_map;
+ TableScanDesc scan;
+ Snapshot snapshot;
+
+ /* Create tuple slot for new partition. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(mergingPartition),
+ table_slot_callbacks(mergingPartition));
+
+ /*
+ * Map computing for moving attributes of merged partition to new
+ * partition.
+ */
+ tuple_map = convert_tuples_by_name(RelationGetDescr(mergingPartition),
+ RelationGetDescr(newPartRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(mergingPartition, snapshot, 0, NULL);
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ {
+ bool insertIndexes;
+
+ table_tuple_insert(newPartRel, insertslot, mycid,
+ ti_options, bistate, &insertIndexes);
+ }
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+ }
+
+ ExecDropSingleTupleTableSlot(dstslot);
+ FreeBulkInsertState(bistate);
+
+ table_finish_bulk_insert(newPartRel, ti_options);
+}
+
+/*
+ * ALTER TABLE <name> MERGE PARTITIONS <partition-list> INTO <partition-name>
+ */
+static void
+ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation newPartRel;
+ ListCell *listptr;
+ List *mergingPartitionsList = NIL;
+ Oid defaultPartOid;
+ RangeVar *mergePartName = cmd->name;
+ bool isSameName = false;
+
+ /*
+ * Lock all merged partitions, check them and create list with partitions
+ * contexts.
+ */
+ foreach(listptr, cmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+ Relation mergingPartition;
+
+ /*
+ * We are going to detach and remove this partition: need to use
+ * exclusive lock for prevent DML-queries to the partition.
+ */
+ mergingPartition = table_openrv(name, AccessExclusiveLock);
+
+ if (mergingPartition->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot merge non-table partition \"%s\"",
+ RelationGetRelationName(mergingPartition))));
+
+ /*
+ * Checking that two partitions have the same name was before, in
+ * function transformPartitionCmdForMerge().
+ */
+ if (equal(name, cmd->name))
+ {
+ /* One new partition can have the same name as merged partition. */
+ isSameName = true;
+ newPartRel = mergingPartition;
+ }
+ else
+ {
+ /* Store a next merging partition into the list. */
+ mergingPartitionsList = lappend(mergingPartitionsList,
+ mergingPartition);
+ }
+ }
+
+ /* Detach all merged partitions. */
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(mergingPartition, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, mergingPartition, false, defaultPartOid);
+ }
+
+ if (isSameName)
+ {
+ /* Detach partition that we re-use for merged partition. */
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(newPartRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, newPartRel, false, defaultPartOid);
+
+ /* Make these updates visible */
+ CommandCounterIncrement();
+ }
+ else
+ {
+ /* Create table for new partition, use partitioned table as model. */
+ createPartitionTable(mergePartName,
+ makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1),
+ context);
+
+ /*
+ * Open the new partition and acquire exclusive lock on it. This will
+ * stop all the operations with partitioned table. This might seem
+ * excessive, but this is the way we make sure nobody is planning
+ * queries involving merging partitions.
+ */
+ newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+ }
+
+ /* Copy data from merged partitions to new partition. */
+ moveMergedTablesRows(rel, mergingPartitionsList, newPartRel);
+
+ /*
+ * Attach a new partition to the partitioned table. wqueue = NULL:
+ * verification for each cloned constraint is not need.
+ */
+ attachPartitionTable(NULL, rel, newPartRel, cmd->bound);
+
+ /* Unlock and drop merged partitions. */
+ foreach(listptr, mergingPartitionsList)
+ {
+ ObjectAddress object;
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Get relation id before table_close() call. */
+ object.objectId = RelationGetRelid(mergingPartition);
+ object.classId = RelationRelationId;
+ object.objectSubId = 0;
+
+ /* Keep the lock until commit. */
+ table_close(mergingPartition, NoLock);
+
+ performDeletion(&object, DROP_RESTRICT, 0);
+ }
+ list_free(mergingPartitionsList);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+}
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 682748eb4b..d7ef1d95b9 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -757,7 +757,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
ORDER ORDINALITY OTHERS OUT_P OUTER_P
OVER OVERLAPS OVERLAY OVERRIDING OWNED OWNER
- PARALLEL PARAMETER PARSER PARTIAL PARTITION PASSING PASSWORD
+ PARALLEL PARAMETER PARSER PARTIAL PARTITION PARTITIONS PASSING PASSWORD
PERIOD PLACING PLANS POLICY
POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
PRIOR PRIVILEGES PROCEDURAL PROCEDURE PROCEDURES PROGRAM PUBLICATION
@@ -2312,6 +2312,7 @@ partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = $4;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -2326,6 +2327,7 @@ partition_cmd:
n->subtype = AT_DetachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = $4;
n->def = (Node *) cmd;
@@ -2339,6 +2341,21 @@ partition_cmd:
n->subtype = AT_DetachPartitionFinalize;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
+ /* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
+ | MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_MergePartitions;
+ cmd->name = $7;
+ cmd->bound = NULL;
+ cmd->partlist = $4;
cmd->concurrent = false;
n->def = (Node *) cmd;
$$ = (Node *) n;
@@ -2355,6 +2372,7 @@ index_partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -17528,6 +17546,7 @@ unreserved_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
@@ -18148,6 +18167,7 @@ bare_label_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index c7efd8d8ce..48a23c7ca4 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -58,6 +58,8 @@
#include "parser/parse_type.h"
#include "parser/parse_utilcmd.h"
#include "parser/parser.h"
+#include "partitioning/partdesc.h"
+#include "partitioning/partbounds.h"
#include "rewrite/rewriteManip.h"
#include "utils/acl.h"
#include "utils/builtins.h"
@@ -3413,6 +3415,80 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForMerge
+ * Analyze the ALTER TABLLE ... MERGE PARTITIONS command
+ *
+ * Does simple checks for merged partitions. Calculates bound of result
+ * partition.
+ */
+static void
+transformPartitionCmdForMerge(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Oid defaultPartOid;
+ Oid partOid;
+ Relation parent = cxt->rel;
+ PartitionKey key;
+ char strategy;
+ ListCell *listptr,
+ *listptr2;
+ bool isDefaultPart = false;
+ List *partOids = NIL;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ if (strategy == PARTITION_STRATEGY_HASH)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be merged")));
+
+ /* Is current partition a DEFAULT partition? */
+ defaultPartOid = get_default_oid_from_partdesc(
+ RelationGetPartitionDesc(parent, true));
+
+ foreach(listptr, partcmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+
+ /* Partitions in the list should have different names. */
+ for_each_cell(listptr2, partcmd->partlist, lnext(partcmd->partlist, listptr))
+ {
+ RangeVar *name2 = (RangeVar *) lfirst(listptr2);
+
+ if (equal(name, name2))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("partition with name \"%s\" already used", name->relname)),
+ parser_errposition(cxt->pstate, name2->location));
+ }
+
+ /* Search DEFAULT partition in the list. */
+ partOid = RangeVarGetRelid(name, NoLock, false);
+ if (partOid == defaultPartOid)
+ isDefaultPart = true;
+ partOids = lappend_oid(partOids, partOid);
+ }
+
+ /* Allocate bound of result partition. */
+ Assert(partcmd->bound == NULL);
+ partcmd->bound = makeNode(PartitionBoundSpec);
+
+ /* Fill partition bound. */
+ partcmd->bound->strategy = strategy;
+ partcmd->bound->location = -1;
+ partcmd->bound->is_default = isDefaultPart;
+ if (!isDefaultPart)
+ calculate_partition_bound_for_merge(parent, partcmd->partlist,
+ partOids, partcmd->bound,
+ cxt->pstate);
+}
+
/*
* transformAlterTableStmt -
* parse analysis for ALTER TABLE
@@ -3683,6 +3759,19 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_MergePartitions:
+ {
+ PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
+
+ if (list_length(partcmd->partlist) < 2)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("list of new partitions should contains at least two items")));
+ transformPartitionCmdForMerge(&cxt, partcmd);
+ newcmds = lappend(newcmds, cmd);
+ break;
+ }
+
default:
/*
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index c28639d2e3..9ed80d721e 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -4977,3 +4977,210 @@ satisfies_hash_partition(PG_FUNCTION_ARGS)
PG_RETURN_BOOL(rowHash % modulus == remainder);
}
+
+/*
+ * check_two_partitions_bounds_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * This is a helper function for check_partitions_for_split() and
+ * calculate_partition_bound_for_merge().
+ * This function compares upper bound of first_bound and lower bound of
+ * second_bound. These bounds should be equals except case
+ * "defaultPart == true" (this means that one of split partitions is DEFAULT).
+ * In this case upper bound of first_bound can be less than lower bound of
+ * second_bound because space between of these bounds will be included in
+ * DEFAULT partition.
+ *
+ * parent: partitioned table
+ * first_name: name of first partition
+ * first_bound: bound of first partition
+ * second_name: name of second partition
+ * second_bound: bound of second partition
+ * defaultPart: true if one of split partitions is DEFAULT
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_two_partitions_bounds_range(Relation parent,
+ RangeVar *first_name,
+ PartitionBoundSpec *first_bound,
+ RangeVar *second_name,
+ PartitionBoundSpec *second_bound,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *first_upper;
+ PartitionRangeBound *second_lower;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+
+ first_upper = make_one_partition_rbound(key, -1, first_bound->upperdatums, false);
+ second_lower = make_one_partition_rbound(key, -1, second_bound->lowerdatums, true);
+
+ /*
+ * lower1=false (the second to last argument) for correct comparison lower
+ * and upper bounds.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ second_lower->datums, second_lower->kind,
+ false, first_upper);
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ {
+ PartitionRangeDatum *datum = linitial(second_bound->lowerdatums);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("lower bound of partition \"%s\" conflicts with upper bound of previous partition \"%s\"",
+ second_name->relname, first_name->relname),
+ parser_errposition(pstate, datum->location)));
+ }
+}
+
+/*
+ * get_partition_bound_spec
+ *
+ * Returns description of partition with Oid "partOid" and name "name".
+ */
+static PartitionBoundSpec *
+get_partition_bound_spec(Oid partOid, RangeVar *name)
+{
+ HeapTuple tuple;
+ Datum datum;
+ bool isnull;
+ PartitionBoundSpec *boundspec = NULL;
+
+ /* Try fetching the tuple from the catcache, for speed. */
+ tuple = SearchSysCache1(RELOID, partOid);
+ if (!HeapTupleIsValid(tuple))
+ elog(ERROR, "cache lookup failed for relation \"%s\"",
+ name->relname);
+
+ datum = SysCacheGetAttr(RELOID, tuple,
+ Anum_pg_class_relpartbound,
+ &isnull);
+ if (isnull)
+ elog(ERROR, "partition bound for relation \"%s\" is null",
+ name->relname);
+
+ boundspec = stringToNode(TextDatumGetCString(datum));
+
+ if (!IsA(boundspec, PartitionBoundSpec))
+ elog(ERROR, "expected PartitionBoundSpec for relation \"%s\"",
+ name->relname);
+
+ ReleaseSysCache(tuple);
+ return boundspec;
+}
+
+/*
+ * calculate_partition_bound_for_merge
+ *
+ * Calculates the bound of merged partition "spec" by using the bounds of
+ * partitions to be merged.
+ *
+ * parent: partitioned table
+ * partNames: names of partitions to be merged
+ * partOids: Oids of partitions to be merged
+ * spec (out): bounds specification of the merged partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionBoundSpec *bound;
+
+ Assert(!spec->is_default);
+
+ switch (key->strategy)
+ {
+ case PARTITION_STRATEGY_RANGE:
+ {
+ int i;
+ PartitionRangeBound **lower_bounds;
+ int nparts = list_length(partOids);
+ List *bounds = NIL;
+
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /*
+ * Create array of lower bounds and list of
+ * PartitionBoundSpec.
+ */
+ for (i = 0; i < nparts; i++)
+ {
+ bound = get_partition_bound_spec(list_nth_oid(partOids, i),
+ (RangeVar *) list_nth(partNames, i));
+
+ lower_bounds[i] = make_one_partition_rbound(key, i, bound->lowerdatums, true);
+ bounds = lappend(bounds, bound);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Ranges of partitions should not overlap. */
+ for (i = 1; i < nparts; i++)
+ {
+ int index = lower_bounds[i]->index;
+ int prev_index = lower_bounds[i - 1]->index;
+
+ check_two_partitions_bounds_range(parent,
+ (RangeVar *) list_nth(partNames, prev_index),
+ (PartitionBoundSpec *) list_nth(bounds, prev_index),
+ (RangeVar *) list_nth(partNames, index),
+ (PartitionBoundSpec *) list_nth(bounds, index),
+ false, pstate);
+ }
+
+ /*
+ * Lower bound of first partition is a lower bound of merged
+ * partition.
+ */
+ spec->lowerdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[0]->index))->lowerdatums;
+
+ /*
+ * Upper bound of last partition is a upper bound of merged
+ * partition.
+ */
+ spec->upperdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[nparts - 1]->index))->upperdatums;
+
+ pfree(lower_bounds);
+ list_free(bounds);
+ break;
+ }
+
+ case PARTITION_STRATEGY_LIST:
+ {
+ ListCell *listptr,
+ *listptr2;
+
+ /* Consolidate bounds for all partitions in the list. */
+ forboth(listptr, partOids, listptr2, partNames)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr2);
+ Oid curOid = lfirst_oid(listptr);
+
+ bound = get_partition_bound_spec(curOid, name);
+ spec->listdatums = list_concat(spec->listdatums, bound->listdatums);
+ }
+ break;
+ }
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ }
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index a690ebc6e5..abb705d11d 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -934,6 +934,17 @@ typedef struct PartitionRangeDatum
ParseLoc location; /* token location, or -1 if unknown */
} PartitionRangeDatum;
+/*
+ * PartitionDesc - info about single partition for ALTER TABLE SPLIT PARTITION command
+ */
+typedef struct SinglePartitionSpec
+{
+ NodeTag type;
+
+ RangeVar *name; /* name of partition */
+ PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+} SinglePartitionSpec;
+
/*
* PartitionCmd - info for ALTER TABLE/INDEX ATTACH/DETACH PARTITION commands
*/
@@ -942,6 +953,8 @@ typedef struct PartitionCmd
NodeTag type;
RangeVar *name; /* name of partition to attach/detach */
PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+ List *partlist; /* list of partitions, for SPLIT PARTITION
+ * command */
bool concurrent;
} PartitionCmd;
@@ -2332,6 +2345,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
AT_DropIdentity, /* DROP IDENTITY */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 6c959e85d5..2304165408 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -333,6 +333,7 @@ PG_KEYWORD("parameter", PARAMETER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("parser", PARSER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partial", PARTIAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partition", PARTITION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("partitions", PARTITIONS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("passing", PASSING, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("password", PASSWORD, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("period", PERIOD, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 3d9cc1031f..0329d7bd84 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,4 +143,10 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate);
+
#endif /* PARTBOUNDS_H */
diff --git a/src/test/isolation/expected/partition-merge.out b/src/test/isolation/expected/partition-merge.out
new file mode 100644
index 0000000000..98446aaab5
--- /dev/null
+++ b/src/test/isolation/expected/partition-merge.out
@@ -0,0 +1,199 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 188fc04f85..8bcaa8a625 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -103,6 +103,7 @@ test: partition-key-update-1
test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
+test: partition-merge
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-merge.spec b/src/test/isolation/specs/partition-merge.spec
new file mode 100644
index 0000000000..ec48732c58
--- /dev/null
+++ b/src/test/isolation/specs/partition-merge.spec
@@ -0,0 +1,54 @@
+# Verify that MERGE operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1merg { ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20; }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2u { UPDATE tpart SET t = 'text01modif' where i = 1; }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s2 inserts row into table. s1 starts MERGE PARTITIONS then
+# s2 trying to update inserted row and waits until s1 finished
+# MERGE operation.
+
+permutation s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 48563b2cf0..69920757b2 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_MergePartitions:
+ strtype = "MERGE PARTITIONS";
+ break;
case AT_AddIdentity:
strtype = "ADD IDENTITY";
break;
diff --git a/src/test/regress/expected/partition_merge.out b/src/test/regress/expected/partition_merge.out
new file mode 100644
index 0000000000..b53df2703b
--- /dev/null
+++ b/src/test/regress/expected/partition_merge.out
@@ -0,0 +1,736 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+ERROR: partition with name "sales_feb2022" already used
+LINE 1: ...e MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2...
+ ^
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+ERROR: cannot merge non-table partition "sales_apr2022"
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_jan2022"
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+ERROR: lower bound of partition "sales_jan2022" conflicts with upper bound of previous partition "sales_dec2021"
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | p | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_dec2021 | r | f | FOR VALUES FROM ('12-01-2021') TO ('12-31-2021')
+ sales_jan_feb_mar2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+ pg_get_partkeydef
+--------------------
+ RANGE (sales_date)
+(1 row)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_mar2022 | r | f | FOR VALUES FROM ('03-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_feb_mar_apr2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('05-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+-------------------------+-----------------------+--------------------------------------+------------+-----------------------------------------------------------------------------------------------------------------------------
+ partitions_merge_schema | sales_feb_mar_apr2022 | sales_feb_mar_apr2022_sales_date_idx | | CREATE INDEX sales_feb_mar_apr2022_sales_date_idx ON partitions_merge_schema.sales_feb_mar_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb_mar_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(10 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(10 rows)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_range;
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+select * from sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(7 rows)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+(2 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(2 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(6 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+DROP TABLE sales_date;
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+select * from salesmans;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(6 rows)
+
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(5 rows)
+
+DROP TABLE salesmans;
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr_all;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+ERROR: partition bound for relation "sales_external" is null
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+ERROR: partition bound for relation "sales_external2" is null
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------------
+ sales_central | r | f | FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd')
+ sales_east | r | f | FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_west | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+--------------+---------+------------------+---------------------------------------------------------------------------------------------------------------------------
+ sales_all | r | f | FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Khabarovsk', 'Vladivostok', 'Moscow', 'Kazan', 'Volgograd')
+ sales_nord | r | f | FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_all;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(10 rows)
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 5ac6e871f5..026e7a7767 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_merge.sql b/src/test/regress/sql/partition_merge.sql
new file mode 100644
index 0000000000..8bf90fd621
--- /dev/null
+++ b/src/test/regress/sql/partition_merge.sql
@@ -0,0 +1,434 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb_mar_apr2022;
+SELECT * FROM sales_others;
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_range;
+
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+
+select * from sales_others;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+DROP TABLE sales_date;
+
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+select * from salesmans;
+select * from salesmans01_10;
+select * from salesmans10_40;
+
+DROP TABLE salesmans;
+
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr_all;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+
+
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_all;
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_all WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index a8d7bed411..a899944dcd 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2603,6 +2603,7 @@ SimpleStats
SimpleStringList
SimpleStringListCell
SingleBoundSortItem
+SinglePartitionSpec
Size
SkipPages
SlabBlock
--
2.40.1.windows.1
[text/plain] v29-0002-ALTER-TABLE-SPLIT-PARTITION-command.patch (176.2K, ../../[email protected]/3-v29-0002-ALTER-TABLE-SPLIT-PARTITION-command.patch)
download | inline diff:
From c380128fb90dc2afc8238294e5bc4c02dc325df8 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Mon, 19 Sep 2022 17:58:52 +0300
Subject: [PATCH v29 2/3] ALTER TABLE SPLIT PARTITION command
---
src/backend/commands/tablecmds.c | 411 +++++
src/backend/parser/gram.y | 38 +-
src/backend/parser/parse_utilcmd.c | 62 +-
src/backend/partitioning/partbounds.c | 657 ++++++++
src/backend/utils/adt/ruleutils.c | 18 +
src/include/nodes/parsenodes.h | 1 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 5 +
src/include/utils/ruleutils.h | 2 +
.../isolation/expected/partition-split.out | 190 +++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-split.spec | 54 +
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_split.out | 1417 +++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_split.sql | 833 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
17 files changed, 3684 insertions(+), 12 deletions(-)
create mode 100644 src/test/isolation/expected/partition-split.out
create mode 100644 src/test/isolation/specs/partition-split.spec
create mode 100644 src/test/regress/expected/partition_split.out
create mode 100644 src/test/regress/sql/partition_split.sql
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 9914fc0d9a..acf49b2057 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,9 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab,
+ Relation rel, PartitionCmd *cmd,
+ AlterTableUtilityContext *context);
static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
PartitionCmd *cmd, AlterTableUtilityContext *context);
@@ -4748,6 +4751,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_SplitPartition:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
case AT_MergePartitions:
cmd_lockmode = AccessExclusiveLock;
break;
@@ -5171,6 +5178,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_SplitPartition:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
case AT_MergePartitions:
ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
/* No command-specific prep needed */
@@ -5573,6 +5585,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_SplitPartition:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecSplitPartition(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
case AT_MergePartitions:
cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
cur_pass, context);
@@ -6575,6 +6595,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_SplitPartition:
+ return "SPLIT PARTITION";
case AT_MergePartitions:
return "MERGE PARTITIONS";
case AT_AddIdentity:
@@ -20861,6 +20883,260 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+/*
+ * Struct with context of new partition for insert rows from splited partition
+ */
+typedef struct SplitPartitionContext
+{
+ ExprState *partqualstate; /* expression for check slot for partition
+ * (NULL for DEFAULT partition) */
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot; /* slot for insert row into partition */
+ Relation partRel; /* relation for partition */
+} SplitPartitionContext;
+
+
+/*
+ * createSplitPartitionContext: create context for partition and fill it
+ */
+static SplitPartitionContext *
+createSplitPartitionContext(Relation partRel)
+{
+ SplitPartitionContext *pc;
+
+ pc = (SplitPartitionContext *) palloc0(sizeof(SplitPartitionContext));
+ pc->partRel = partRel;
+
+ /*
+ * Prepare a BulkInsertState for table_tuple_insert. The FSM is empty, so
+ * don't bother using it.
+ */
+ pc->bistate = GetBulkInsertState();
+
+ /* Create tuple slot for new partition. */
+ pc->dstslot = MakeSingleTupleTableSlot(RelationGetDescr(pc->partRel),
+ table_slot_callbacks(pc->partRel));
+ ExecStoreAllNullTuple(pc->dstslot);
+
+ return pc;
+}
+
+/*
+ * deleteSplitPartitionContext: delete context for partition
+ */
+static void
+deleteSplitPartitionContext(SplitPartitionContext *pc, int ti_options)
+{
+ ExecDropSingleTupleTableSlot(pc->dstslot);
+ FreeBulkInsertState(pc->bistate);
+
+ table_finish_bulk_insert(pc->partRel, ti_options);
+
+ pfree(pc);
+}
+
+/*
+ * moveSplitTableRows: scan split partition (splitRel) of partitioned table
+ * (rel) and move rows into new partitions.
+ *
+ * New partitions description:
+ * partlist: list of pointers to SinglePartitionSpec structures.
+ * newPartRels: list of Relation's.
+ * defaultPartOid: oid of DEFAULT partition, for table rel.
+ */
+static void
+moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPartRels, Oid defaultPartOid)
+{
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ CommandId mycid;
+ EState *estate;
+ ListCell *listptr,
+ *listptr2;
+ TupleTableSlot *srcslot;
+ ExprContext *econtext;
+ TableScanDesc scan;
+ Snapshot snapshot;
+ MemoryContext oldCxt;
+ List *partContexts = NIL;
+ TupleConversionMap *tuple_map;
+ SplitPartitionContext *defaultPartCtx = NULL,
+ *pc;
+ bool isOldDefaultPart = false;
+
+ mycid = GetCurrentCommandId(true);
+
+ estate = CreateExecutorState();
+
+ forboth(listptr, partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ pc = createSplitPartitionContext((Relation) lfirst(listptr2));
+
+ if (sps->bound->is_default)
+ {
+ /* We should not create constraint for detached DEFAULT partition. */
+ defaultPartCtx = pc;
+ }
+ else
+ {
+ List *partConstraint;
+
+ /* Build expression execution states for partition check quals. */
+ partConstraint = get_qual_from_partbound(rel, sps->bound);
+ partConstraint =
+ (List *) eval_const_expressions(NULL,
+ (Node *) partConstraint);
+ /* Make boolean expression for ExecCheck(). */
+ partConstraint = list_make1(make_ands_explicit(partConstraint));
+
+ /*
+ * Map the vars in the constraint expression from rel's attnos to
+ * splitRel's.
+ */
+ partConstraint = map_partition_varattnos(partConstraint,
+ 1, splitRel, rel);
+
+ pc->partqualstate =
+ ExecPrepareExpr((Expr *) linitial(partConstraint), estate);
+ Assert(pc->partqualstate != NULL);
+ }
+
+ /* Store partition context into list. */
+ partContexts = lappend(partContexts, pc);
+ }
+
+ /*
+ * Create partition context for DEFAULT partition. We can insert values
+ * into this partition in case spaces with values between new partitions.
+ */
+ if (!defaultPartCtx && OidIsValid(defaultPartOid))
+ {
+ /* Indicate that we allocate context for old DEFAULT partition */
+ isOldDefaultPart = true;
+ defaultPartCtx = createSplitPartitionContext(table_open(defaultPartOid, AccessExclusiveLock));
+ }
+
+ econtext = GetPerTupleExprContext(estate);
+
+ /* Create necessary tuple slot. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(splitRel),
+ table_slot_callbacks(splitRel));
+
+ /*
+ * Map computing for moving attributes of split partition to new partition
+ * (for first new partition but other new partitions can use the same
+ * map).
+ */
+ pc = (SplitPartitionContext *) lfirst(list_head(partContexts));
+ tuple_map = convert_tuples_by_name(RelationGetDescr(splitRel),
+ RelationGetDescr(pc->partRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(splitRel, snapshot, 0, NULL);
+
+ /*
+ * Switch to per-tuple memory context and reset it for each tuple
+ * produced, so we don't leak memory.
+ */
+ oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(estate));
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ bool found = false;
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ econtext->ecxt_scantuple = srcslot;
+
+ /* Search partition for current slot srcslot. */
+ foreach(listptr, partContexts)
+ {
+ pc = (SplitPartitionContext *) lfirst(listptr);
+
+ if (pc->partqualstate /* skip DEFAULT partition */ &&
+ ExecCheck(pc->partqualstate, econtext))
+ {
+ found = true;
+ break;
+ }
+ ResetExprContext(econtext);
+ }
+ if (!found)
+ {
+ /* Use DEFAULT partition if it exists. */
+ if (defaultPartCtx)
+ pc = defaultPartCtx;
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_CHECK_VIOLATION),
+ errmsg("can not find partition for split partition row"),
+ errtable(splitRel)));
+ }
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, pc->dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = pc->dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /* Write the tuple out to the new relation. */
+ {
+ bool insertIndexes;
+
+ table_tuple_insert(pc->partRel, insertslot, mycid,
+ ti_options, pc->bistate, &insertIndexes);
+ }
+
+ ResetExprContext(econtext);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ MemoryContextSwitchTo(oldCxt);
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+
+ FreeExecutorState(estate);
+
+ foreach(listptr, partContexts)
+ deleteSplitPartitionContext((SplitPartitionContext *) lfirst(listptr), ti_options);
+
+ /* Need to close table and free buffers for DEFAULT partition. */
+ if (isOldDefaultPart)
+ {
+ Relation defaultPartRel = defaultPartCtx->partRel;
+
+ deleteSplitPartitionContext(defaultPartCtx, ti_options);
+ /* Keep the lock until commit. */
+ table_close(defaultPartRel, NoLock);
+ }
+}
+
/*
* createPartitionTable: create table for new partition with given name
* (newPartName) like table (modelRelName)
@@ -20915,6 +21191,141 @@ createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
NULL);
}
+/*
+ * ALTER TABLE <name> SPLIT PARTITION <partition-name> INTO <partition-list>
+ */
+static void
+ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation splitRel;
+ Oid splitRelOid;
+ char relname[NAMEDATALEN];
+ Oid namespaceId;
+ ListCell *listptr,
+ *listptr2;
+ bool isSameName = false;
+ char tmpRelName[NAMEDATALEN];
+ List *newPartRels = NIL;
+ ObjectAddress object;
+ RangeVar *parentName;
+ Oid defaultPartOid;
+
+ defaultPartOid = get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+
+ /*
+ * We are going to detach and remove this partition: need to use exclusive
+ * lock for prevent DML-queries to the partition.
+ */
+ splitRel = table_openrv(cmd->name, AccessExclusiveLock);
+
+ if (splitRel->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot split non-table partition \"%s\"",
+ RelationGetRelationName(splitRel))));
+
+ splitRelOid = RelationGetRelid(splitRel);
+
+ /* Check descriptions of new partitions. */
+ foreach(listptr, cmd->partlist)
+ {
+ Oid existing_relid;
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ strlcpy(relname, sps->name->relname, NAMEDATALEN);
+
+ /*
+ * Look up the namespace in which we are supposed to create the
+ * partition, check we have permission to create there, lock it
+ * against concurrent drop, and mark stmt->relation as
+ * RELPERSISTENCE_TEMP if a temporary namespace is selected.
+ */
+ namespaceId =
+ RangeVarGetAndCheckCreationNamespace(sps->name, NoLock, NULL);
+
+ /*
+ * This would fail later on anyway, if the relation already exists.
+ * But by catching it here we can emit a nicer error message.
+ */
+ existing_relid = get_relname_relid(relname, namespaceId);
+ if (existing_relid == splitRelOid && !isSameName)
+ /* One new partition can have the same name as split partition. */
+ isSameName = true;
+ else if (existing_relid != InvalidOid)
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("relation \"%s\" already exists", relname)));
+ }
+
+ /* Detach split partition. */
+ RemoveInheritance(splitRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, splitRel, false, defaultPartOid);
+
+ /*
+ * If new partition has the same name as split partition then we should
+ * rename split partition for reuse name.
+ */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ sprintf(tmpRelName, "split-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ RenameRelationInternal(splitRelOid, tmpRelName, false, false);
+
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible after rename.
+ */
+ CommandCounterIncrement();
+ }
+
+ /* Create new partitions (like split partition), without indexes. */
+ parentName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1);
+ foreach(listptr, cmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel;
+
+ createPartitionTable(sps->name, parentName, context);
+
+ /* Open the new partition and acquire exclusive lock on it. */
+ newPartRel = table_openrv(sps->name, AccessExclusiveLock);
+
+ newPartRels = lappend(newPartRels, newPartRel);
+ }
+
+ /* Copy data from split partition to new partitions. */
+ moveSplitTableRows(rel, splitRel, cmd->partlist, newPartRels, defaultPartOid);
+ /* Keep the lock until commit. */
+ table_close(splitRel, NoLock);
+
+ /* Attach new partitions to partitioned table. */
+ forboth(listptr, cmd->partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel = (Relation) lfirst(listptr2);
+
+ /* wqueue = NULL: verification for each cloned constraint is not need. */
+ attachPartitionTable(NULL, rel, newPartRel, sps->bound);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+ }
+
+ /* Drop split partition. */
+ object.classId = RelationRelationId;
+ object.objectId = splitRelOid;
+ object.objectSubId = 0;
+ /* Probably DROP_CASCADE is not needed. */
+ performDeletion(&object, DROP_RESTRICT, 0);
+}
+
/*
* moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
* of the partitioned table (rel) and move rows into the new partition
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index d7ef1d95b9..11c958305a 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -270,6 +270,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
PartitionElem *partelem;
PartitionSpec *partspec;
PartitionBoundSpec *partboundspec;
+ SinglePartitionSpec *singlepartspec;
RoleSpec *rolespec;
PublicationObjSpec *publicationobjectspec;
struct SelectLimit *selectlimit;
@@ -647,6 +648,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
%type <partelem> part_elem
%type <list> part_params
%type <partboundspec> PartitionBoundSpec
+%type <singlepartspec> SinglePartitionSpec
+%type <list> partitions_list
%type <list> hash_partbound
%type <defelt> hash_partbound_elem
@@ -772,7 +775,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
SAVEPOINT SCALAR SCHEMA SCHEMAS SCROLL SEARCH SECOND_P SECURITY SELECT
SEQUENCE SEQUENCES
SERIALIZABLE SERVER SESSION SESSION_USER SET SETS SETOF SHARE SHOW
- SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SOURCE SQL_P STABLE STANDALONE_P
+ SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SOURCE SPLIT SQL_P STABLE STANDALONE_P
START STATEMENT STATISTICS STDIN STDOUT STORAGE STORED STRICT_P STRING_P STRIP_P
SUBSCRIPTION SUBSTRING SUPPORT SYMMETRIC SYSID SYSTEM_P SYSTEM_USER
@@ -2302,6 +2305,23 @@ alter_table_cmds:
| alter_table_cmds ',' alter_table_cmd { $$ = lappend($1, $3); }
;
+partitions_list:
+ SinglePartitionSpec { $$ = list_make1($1); }
+ | partitions_list ',' SinglePartitionSpec { $$ = lappend($1, $3); }
+ ;
+
+SinglePartitionSpec:
+ PARTITION qualified_name PartitionBoundSpec
+ {
+ SinglePartitionSpec *n = makeNode(SinglePartitionSpec);
+
+ n->name = $2;
+ n->bound = $3;
+
+ $$ = n;
+ }
+ ;
+
partition_cmd:
/* ALTER TABLE <name> ATTACH PARTITION <table_name> FOR VALUES */
ATTACH PARTITION qualified_name PartitionBoundSpec
@@ -2346,6 +2366,20 @@ partition_cmd:
n->def = (Node *) cmd;
$$ = (Node *) n;
}
+ /* ALTER TABLE <name> SPLIT PARTITION <partition_name> INTO () */
+ | SPLIT PARTITION qualified_name INTO '(' partitions_list ')'
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_SplitPartition;
+ cmd->name = $3;
+ cmd->bound = NULL;
+ cmd->partlist = $6;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
/* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
| MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
{
@@ -17614,6 +17648,7 @@ unreserved_keyword:
| SKIP
| SNAPSHOT
| SOURCE
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
@@ -18247,6 +18282,7 @@ bare_label_keyword:
| SNAPSHOT
| SOME
| SOURCE
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index 48a23c7ca4..88a4a41186 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -136,7 +136,7 @@ static void transformConstraintAttrs(CreateStmtContext *cxt,
List *constraintList);
static void transformColumnType(CreateStmtContext *cxt, ColumnDef *column);
static void setSchemaName(const char *context_schema, char **stmt_schema_name);
-static void transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd);
+static void transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound);
static List *transformPartitionRangeBounds(ParseState *pstate, List *blist,
Relation parent);
static void validateInfiniteBounds(ParseState *pstate, List *blist);
@@ -3415,6 +3415,43 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForSplit
+ * Analyze the ALTER TABLLE ... SPLIT PARTITION command
+ *
+ * For each new partition sps->bound is set to the transformed value of bound.
+ * Does checks for bounds of new partitions.
+ */
+static void
+transformPartitionCmdForSplit(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Relation parent = cxt->rel;
+ Oid splitPartOid;
+ ListCell *listptr;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ /* Transform partition bounds for all partitions in the list: */
+ foreach(listptr, partcmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ cxt->partbound = NULL;
+ transformPartitionCmd(cxt, sps->bound);
+ /* Assign transformed value of the partition bound. */
+ sps->bound = cxt->partbound;
+ }
+
+ splitPartOid = RangeVarGetRelid(partcmd->name, NoLock, false);
+
+ /* Then we should check partitions with transformed bounds. */
+ check_partitions_for_split(parent, splitPartOid, partcmd->name, partcmd->partlist, cxt->pstate);
+}
+
+
/*
* transformPartitionCmdForMerge
* Analyze the ALTER TABLLE ... MERGE PARTITIONS command
@@ -3751,7 +3788,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
- transformPartitionCmd(&cxt, partcmd);
+ transformPartitionCmd(&cxt, partcmd->bound);
/* assign transformed value of the partition bound */
partcmd->bound = cxt.partbound;
}
@@ -3759,6 +3796,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_SplitPartition:
case AT_MergePartitions:
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
@@ -3767,7 +3805,11 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("list of new partitions should contains at least two items")));
- transformPartitionCmdForMerge(&cxt, partcmd);
+
+ if (cmd->subtype == AT_SplitPartition)
+ transformPartitionCmdForSplit(&cxt, partcmd);
+ else
+ transformPartitionCmdForMerge(&cxt, partcmd);
newcmds = lappend(newcmds, cmd);
break;
}
@@ -4172,13 +4214,13 @@ setSchemaName(const char *context_schema, char **stmt_schema_name)
/*
* transformPartitionCmd
- * Analyze the ATTACH/DETACH PARTITION command
+ * Analyze the ATTACH/DETACH/SPLIT PARTITION command
*
- * In case of the ATTACH PARTITION command, cxt->partbound is set to the
- * transformed value of cmd->bound.
+ * In case of the ATTACH/SPLIT PARTITION command, cxt->partbound is set to the
+ * transformed value of bound.
*/
static void
-transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
+transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound)
{
Relation parentRel = cxt->rel;
@@ -4187,9 +4229,9 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
case RELKIND_PARTITIONED_TABLE:
/* transform the partition bound, if any */
Assert(RelationGetPartitionKey(parentRel) != NULL);
- if (cmd->bound != NULL)
+ if (bound != NULL)
cxt->partbound = transformPartitionBound(cxt->pstate, parentRel,
- cmd->bound);
+ bound);
break;
case RELKIND_PARTITIONED_INDEX:
@@ -4197,7 +4239,7 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
* A partitioned index cannot have a partition bound set. ALTER
* INDEX prevents that with its grammar, but not ALTER TABLE.
*/
- if (cmd->bound != NULL)
+ if (bound != NULL)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("\"%s\" is not a partitioned table",
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index 9ed80d721e..c36e26ba4b 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -5040,10 +5040,69 @@ check_two_partitions_bounds_range(Relation parent,
}
}
+/*
+ * check_partitions_not_overlap_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * This is a helper function for check_partitions_for_split().
+ * Checks that the values of the new partitions do not overlap.
+ *
+ * parent: partitioned table
+ * parts: array of SinglePartitionSpec structs with info about split partitions
+ * nparts: size of array "parts"
+ */
+static void
+check_partitions_not_overlap_list(Relation parent,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key PG_USED_FOR_ASSERTS_ONLY = RelationGetPartitionKey(parent);
+ int overlap_location = -1;
+ int i,
+ j;
+ SinglePartitionSpec *sps1,
+ *sps2;
+ List *overlap;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ for (i = 0; i < nparts; i++)
+ {
+ sps1 = parts[i];
+
+ for (j = i + 1; j < nparts; j++)
+ {
+ sps2 = parts[j];
+
+ /*
+ * Calculate intersection between values of two partitions.
+ */
+ overlap = list_intersection(sps1->bound->listdatums,
+ sps2->bound->listdatums);
+ if (list_length(overlap) > 0)
+ {
+ Const *val = (Const *) lfirst(list_head(overlap));
+
+ overlap_location = val->location;
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another new partition \"%s\"",
+ sps1->name->relname, sps2->name->relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ }
+ }
+}
+
/*
* get_partition_bound_spec
*
* Returns description of partition with Oid "partOid" and name "name".
+ *
+ * partOid: partition Oid
+ * name: partition name
*/
static PartitionBoundSpec *
get_partition_bound_spec(Oid partOid, RangeVar *name)
@@ -5076,6 +5135,604 @@ get_partition_bound_spec(Oid partOid, RangeVar *name)
return boundspec;
}
+/*
+ * check_partition_bounds_for_split_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * Checks that bounds of new partition "spec" is inside bounds of split
+ * partition (with Oid splitPartOid). If first=true (this means that "spec" is
+ * the first of new partitions) then lower bound of "spec" should be equal (or
+ * greater than or equal in case defaultPart=true) to lower bound of split
+ * partition. If last=true (this means that "spec" is the last of new
+ * partitions) then upper bound of of "spec" should be equal (or less than or
+ * equal in case defaultPart=true) to upper bound of split partition.
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * first: true in case new partition "spec" is first of new partitions
+ * last: true in case new partition "spec" is last of new partitions
+ * defaultPart: true in case partitioned table has DEFAULT partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_range(Relation parent,
+ char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ bool first,
+ bool last,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *lower,
+ *upper;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+ Assert(spec->strategy == PARTITION_STRATEGY_RANGE);
+
+ lower = make_one_partition_rbound(key, -1, spec->lowerdatums, true);
+ upper = make_one_partition_rbound(key, -1, spec->upperdatums, false);
+
+ /*
+ * First check if the resulting range would be empty with specified lower
+ * and upper bounds. partition_rbound_cmp cannot return zero here, since
+ * the lower-bound flags are different.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, upper);
+ Assert(cmpval != 0);
+ if (cmpval > 0)
+ {
+ /* Point to problematic key in the lower datums list. */
+ PartitionRangeDatum *datum = list_nth(spec->lowerdatums, cmpval - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("empty range bound specified for partition \"%s\"",
+ relname),
+ errdetail("Specified lower bound %s is greater than or equal to upper bound %s.",
+ get_range_partbound_string(spec->lowerdatums),
+ get_range_partbound_string(spec->upperdatums)),
+ parser_errposition(pstate, datum->location)));
+ }
+
+ /* Need to check first and last partitions (from set of new partitions) */
+ if (first || last)
+ {
+ PartitionBoundSpec *split_spec = get_partition_bound_spec(splitPartOid, splitPartName);
+ bool overlap = false;
+
+ if (first)
+ {
+ PartitionRangeBound *split_lower;
+
+ split_lower = make_one_partition_rbound(key, -1, split_spec->lowerdatums, true);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, split_lower);
+
+ /*
+ * Lower bound of "spec" should be equal (or greater than or equal
+ * in case defaultPart=true) to lower bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ overlap = true;
+ }
+ else
+ {
+ PartitionRangeBound *split_upper;
+
+ split_upper = make_one_partition_rbound(key, -1, split_spec->upperdatums, false);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ upper->datums, upper->kind,
+ false, split_upper);
+
+ /*
+ * Upper bound of of "spec" should be equal (or less than or equal
+ * in case defaultPart=true) to upper bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval > 0))
+ overlap = true;
+ }
+
+ if (overlap)
+ {
+ PartitionRangeDatum *datum;
+
+ datum = list_nth(first ? spec->lowerdatums : spec->upperdatums, abs(cmpval) - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("%s bound of partition \"%s\" is %s %s bound of split partition",
+ first ? "lower" : "upper",
+ relname,
+ defaultPart ? (first ? "less than" : "greater than") : "not equals to",
+ first ? "lower" : "upper"),
+ parser_errposition(pstate, datum->location)));
+ }
+ }
+}
+
+/*
+ * check_partition_bounds_for_split_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that bounds of new partition is inside bounds of split partition
+ * (with Oid splitPartOid).
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_list(Relation parent, char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int with = -1;
+ bool overlap = false;
+ int overlap_location = -1;
+ ListCell *cell;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+ Assert(spec->strategy == PARTITION_STRATEGY_LIST);
+ Assert(boundinfo && boundinfo->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Search each value of new partition "spec" in existing partitions. All
+ * of them should be in split partition (with Oid splitPartOid).
+ */
+ foreach(cell, spec->listdatums)
+ {
+ Const *val = lfirst_node(Const, cell);
+
+ overlap_location = val->location;
+ if (!val->constisnull)
+ {
+ int offset;
+ bool equal;
+
+ offset = partition_list_bsearch(&key->partsupfunc[0],
+ key->partcollation,
+ boundinfo,
+ val->constvalue,
+ &equal);
+ if (offset >= 0 && equal)
+ {
+ with = boundinfo->indexes[offset];
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have this value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ else if (partition_bound_accepts_nulls(boundinfo))
+ {
+ with = boundinfo->null_index;
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have NULL value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+
+ if (overlap)
+ {
+ Assert(with >= 0);
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another (not split) partition \"%s\"",
+ relname, get_rel_name(partdesc->oids[with])),
+ parser_errposition(pstate, overlap_location)));
+ }
+}
+
+/*
+ * find_value_in_new_partitions_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Function returns true in case any of new partitions contains value "value".
+ *
+ * partsupfunc: information about comparison function associated with the partition key
+ * partcollation: partitioning collation
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * value: the value that we are looking for
+ * isnull: true if the value that we are looking for is NULL
+ */
+static bool
+find_value_in_new_partitions_list(FmgrInfo *partsupfunc,
+ Oid *partcollation,
+ SinglePartitionSpec **parts,
+ int nparts,
+ Datum value,
+ bool isnull)
+{
+ ListCell *valptr;
+ int i;
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = parts[i];
+
+ foreach(valptr, sps->bound->listdatums)
+ {
+ Const *val = lfirst_node(Const, valptr);
+
+ if (isnull && val->constisnull)
+ return true;
+
+ if (!isnull && !val->constisnull)
+ {
+ if (DatumGetInt32(FunctionCall2Coll(&partsupfunc[0],
+ partcollation[0],
+ val->constvalue,
+ value)) == 0)
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/*
+ * check_parent_values_in_new_partitions
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that all values of split partition (with Oid partOid) contains in new
+ * partitions.
+ *
+ * parent: partitioned table
+ * partOid: split partition Oid
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_parent_values_in_new_partitions(Relation parent,
+ Oid partOid,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int i;
+ bool found = true;
+ bool searchNull = false;
+ Datum datum = PointerGetDatum(NULL);
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Special processing for NULL value. Search NULL-value if it contains
+ * split partition (partOid).
+ */
+ if (partition_bound_accepts_nulls(boundinfo) &&
+ partdesc->oids[boundinfo->null_index] == partOid)
+ {
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, true))
+ {
+ found = false;
+ searchNull = true;
+ }
+ }
+
+ /*
+ * Search all values of split partition with partOid in PartitionDesc of
+ * partitionde table.
+ */
+ for (i = 0; i < boundinfo->ndatums; i++)
+ {
+ if (partdesc->oids[boundinfo->indexes[i]] == partOid)
+ {
+ /* We found value that split partition contains. */
+ datum = boundinfo->datums[i][0];
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, false))
+ {
+ found = false;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ {
+ Const *notFoundVal;
+
+ if (!searchNull)
+ /* Make Const for get string representation of not found value. */
+ notFoundVal = makeConst(key->parttypid[0],
+ key->parttypmod[0],
+ key->parttypcoll[0],
+ key->parttyplen[0],
+ datum,
+ false, /* isnull */
+ key->parttypbyval[0]);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partitions not have value %s but split partition has",
+ searchNull ? "NULL" : get_list_partvalue_string(notFoundVal))));
+ }
+}
+
+/*
+ * check_partitions_for_split
+ *
+ * Checks new partitions for SPLIT PARTITIONS command:
+ * 1. DEFAULT partition should be one.
+ * 2. New partitions should have different names
+ * (with existing partitions too).
+ * 3. Bounds of new partitions should not overlap with new and existing
+ * partitions.
+ * 4. In case split partition is DEFAULT partition, one of new partitions
+ * should be DEFAULT.
+ * 5. In case new partitions or existing partitions contains DEFAULT
+ * partition, new partitions can have any bounds inside split
+ * partition bound (can be spaces between partitions bounds).
+ * 6. In case partitioned table does not have DEFAULT partition, DEFAULT
+ * partition can be defined as one of new partition.
+ * 7. In case new partitions not contains DEFAULT partition and
+ * partitioned table does not have DEFAULT partition the following
+ * should be true: sum bounds of new partitions should be equal
+ * to bound of split partition.
+ *
+ * parent: partitioned table
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * list: list of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate)
+{
+ PartitionKey key;
+ char strategy;
+ Oid defaultPartOid;
+ bool isSplitPartDefault;
+ bool existsDefaultPart;
+ ListCell *listptr;
+ int default_index = -1;
+ int i,
+ j;
+ SinglePartitionSpec **new_parts;
+ SinglePartitionSpec *spsPrev = NULL;
+ int nparts = 0;
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ switch (strategy)
+ {
+ case PARTITION_STRATEGY_LIST:
+ case PARTITION_STRATEGY_RANGE:
+ {
+ /*
+ * Make array new_parts with new partitions except DEFAULT
+ * partition.
+ */
+ new_parts = (SinglePartitionSpec **)
+ palloc0(list_length(partlist) * sizeof(SinglePartitionSpec *));
+ i = 0;
+ foreach(listptr, partlist)
+ {
+ SinglePartitionSpec *sps =
+ (SinglePartitionSpec *) lfirst(listptr);
+
+ if (sps->bound->is_default)
+ {
+ if (default_index >= 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("DEFAULT partition should be one")),
+ parser_errposition(pstate, sps->name->location));
+ default_index = i;
+ }
+ else
+ {
+ new_parts[nparts++] = sps;
+ }
+ i++;
+ }
+ }
+ break;
+
+ case PARTITION_STRATEGY_HASH:
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be split")));
+ break;
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ break;
+ }
+
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ PartitionRangeBound **lower_bounds;
+ SinglePartitionSpec **tmp_new_parts;
+
+ /*
+ * For simplify check for ranges of new partitions need to sort all
+ * partitions in ascending order of them bounds (we compare upper
+ * bound only).
+ */
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /* Create array of lower bounds. */
+ for (i = 0; i < nparts; i++)
+ {
+ lower_bounds[i] = make_one_partition_rbound(key, i,
+ new_parts[i]->bound->lowerdatums, true);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Reorder array of partitions. */
+ tmp_new_parts = new_parts;
+ new_parts = (SinglePartitionSpec **)
+ palloc0(nparts * sizeof(SinglePartitionSpec *));
+ for (i = 0; i < nparts; i++)
+ new_parts[i] = tmp_new_parts[lower_bounds[i]->index];
+
+ pfree(tmp_new_parts);
+ pfree(lower_bounds);
+ }
+
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(parent, true));
+
+ /* isSplitPartDefault flag: is split partition a DEFAULT partition? */
+ isSplitPartDefault = (defaultPartOid == splitPartOid);
+
+ if (isSplitPartDefault && default_index < 0)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("any partition in the list should be DEFAULT because split partition is DEFAULT")),
+ parser_errposition(pstate, ((SinglePartitionSpec *) linitial(partlist))->name->location));
+ }
+ else if (!isSplitPartDefault && (default_index >= 0) && OidIsValid(defaultPartOid))
+ {
+ SinglePartitionSpec *spsDef =
+ (SinglePartitionSpec *) list_nth(partlist, default_index);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition cannot be DEFAULT because DEFAULT partition already exists")),
+ parser_errposition(pstate, spsDef->name->location));
+ }
+
+ /* Indicator that partitioned table has (or will have) DEFAULT partition */
+ existsDefaultPart = OidIsValid(defaultPartOid) || (default_index >= 0);
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = new_parts[i];
+
+ if (isSplitPartDefault)
+ {
+ /*
+ * In case split partition is DEFAULT partition we can use any
+ * free ranges - as when creating a new partition.
+ */
+ check_new_partition_bound(sps->name->relname, parent, sps->bound,
+ pstate);
+ }
+ else
+ {
+ /*
+ * Checks that bound of current partition is inside bound of split
+ * partition. For range partitioning: checks that upper bound of
+ * previous partition is equal to lower bound of current
+ * partition. For list partitioning: checks that split partition
+ * contains all values of current partition.
+ */
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ bool first = (i == 0);
+ bool last = (i == (nparts - 1));
+
+ check_partition_bounds_for_split_range(parent, sps->name->relname, sps->bound,
+ splitPartOid, splitPartName,
+ first, last,
+ existsDefaultPart, pstate);
+ }
+ else
+ check_partition_bounds_for_split_list(parent, sps->name->relname,
+ sps->bound, splitPartOid, pstate);
+ }
+
+ /* Ranges of new partitions should not overlap. */
+ if (strategy == PARTITION_STRATEGY_RANGE && spsPrev)
+ check_two_partitions_bounds_range(parent, spsPrev->name, spsPrev->bound,
+ sps->name, sps->bound, existsDefaultPart, pstate);
+
+ spsPrev = sps;
+
+ /* Check: new partitions should have different names. */
+ for (j = i + 1; j < nparts; j++)
+ {
+ SinglePartitionSpec *sps2 = new_parts[j];
+
+ if (equal(sps->name, sps2->name))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("name \"%s\" already used", sps2->name->relname)),
+ parser_errposition(pstate, sps2->name->location));
+ }
+ }
+
+ if (strategy == PARTITION_STRATEGY_LIST)
+ {
+ /* Values of new partitions should not overlap. */
+ check_partitions_not_overlap_list(parent, new_parts, nparts,
+ pstate);
+
+ /*
+ * Need to check that all values of split partition contains in new
+ * partitions. Skip this check if DEFAULT partition exists.
+ */
+ if (!existsDefaultPart)
+ check_parent_values_in_new_partitions(parent, splitPartOid,
+ new_parts, nparts, pstate);
+ }
+
+ pfree(new_parts);
+}
+
/*
* calculate_partition_bound_for_merge
*
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index 0f7f40c50f..150ff7abd5 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -13066,3 +13066,21 @@ get_range_partbound_string(List *bound_datums)
return buf->data;
}
+
+/*
+ * get_list_partvalue_string
+ * A C string representation of one list partition value
+ */
+char *
+get_list_partvalue_string(Const *val)
+{
+ deparse_context context;
+ StringInfo buf = makeStringInfo();
+
+ memset(&context, 0, sizeof(deparse_context));
+ context.buf = buf;
+
+ get_const_expr(val, &context, -1);
+
+ return buf->data;
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index abb705d11d..8602f791ca 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -2345,6 +2345,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_SplitPartition, /* SPLIT PARTITION */
AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 2304165408..6f19f166a6 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -416,6 +416,7 @@ PG_KEYWORD("smallint", SMALLINT, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("snapshot", SNAPSHOT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("some", SOME, RESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("source", SOURCE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("split", SPLIT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("sql", SQL_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("stable", STABLE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("standalone", STANDALONE_P, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 0329d7bd84..9d2a26705f 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,6 +143,11 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate);
extern void calculate_partition_bound_for_merge(Relation parent,
List *partNames,
List *partOids,
diff --git a/src/include/utils/ruleutils.h b/src/include/utils/ruleutils.h
index 161fb5ef02..6d86080622 100644
--- a/src/include/utils/ruleutils.h
+++ b/src/include/utils/ruleutils.h
@@ -49,4 +49,6 @@ extern char *get_range_partbound_string(List *bound_datums);
extern char *pg_get_statisticsobjdef_string(Oid statextid);
+extern char *get_list_partvalue_string(Const *val);
+
#endif /* RULEUTILS_H */
diff --git a/src/test/isolation/expected/partition-split.out b/src/test/isolation/expected/partition-split.out
new file mode 100644
index 0000000000..5d9e8b0925
--- /dev/null
+++ b/src/test/isolation/expected/partition-split.out
@@ -0,0 +1,190 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s1b s1splt s2b s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2brr s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2bs s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2b s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2brr s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2bs s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2b s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2brr s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2bs s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 8bcaa8a625..0342eb39e4 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -104,6 +104,7 @@ test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
test: partition-merge
+test: partition-split
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-split.spec b/src/test/isolation/specs/partition-split.spec
new file mode 100644
index 0000000000..087239a4a1
--- /dev/null
+++ b/src/test/isolation/specs/partition-split.spec
@@ -0,0 +1,54 @@
+# Verify that SPLIT operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1splt { ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20)); }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s1 starts SPLIT PARTITION then s2 trying to insert row and
+# waits until s1 finished SPLIT operation.
+
+permutation s1b s1splt s2b s2i s1c s2c s2s
+permutation s1b s1splt s2brr s2i s1c s2c s2s
+permutation s1b s1splt s2bs s2i s1c s2c s2s
+
+permutation s1brr s1splt s2b s2i s1c s2c s2s
+permutation s1brr s1splt s2brr s2i s1c s2c s2s
+permutation s1brr s1splt s2bs s2i s1c s2c s2s
+
+permutation s1bs s1splt s2b s2i s1c s2c s2s
+permutation s1bs s1splt s2brr s2i s1c s2c s2s
+permutation s1bs s1splt s2bs s2i s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 69920757b2..265ef2a547 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_SplitPartition:
+ strtype = "SPLIT PARTITION";
+ break;
case AT_MergePartitions:
strtype = "MERGE PARTITIONS";
break;
diff --git a/src/test/regress/expected/partition_split.out b/src/test/regress/expected/partition_split.out
new file mode 100644
index 0000000000..7eb52f6fee
--- /dev/null
+++ b/src/test/regress/expected/partition_split.out
@@ -0,0 +1,1417 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_xxx" does not exist
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_jan2022" already exists
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: invalid bound specification for a range partition
+LINE 2: (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '202...
+ ^
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: empty range bound specified for partition "sales_mar2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+DETAIL: Specified lower bound ('03-01-2022') is greater than or equal to upper bound ('02-01-2022').
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+ERROR: list of new partitions should contains at least two items
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO...
+ ^
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb_mar_apr2022" already used
+LINE 3: PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03...
+ ^
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb2022" already used
+LINE 3: PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+LINE 4: ... sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-0...
+ ^
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_feb2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO...
+ ^
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO...
+ ^
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(4 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+ERROR: relation "sales_jan_feb2022" does not exist
+LINE 1: SELECT * FROM sales_jan_feb2022;
+ ^
+DROP TABLE sales_date CASCADE;
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 7 | Li | 175 | 03-08-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 11 | Trump | 380 | 04-06-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(11 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+-----------------------------+------------+----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx | | CREATE INDEX sales_others_sales_date_idx ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_feb2022 | sales_feb2022_sales_date_idx | | CREATE INDEX sales_feb2022_sales_date_idx ON partition_split_schema.sales_feb2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_mar2022 | sales_mar2022_sales_date_idx | | CREATE INDEX sales_mar2022_sales_date_idx ON partition_split_schema.sales_mar2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_apr2022 | sales_apr2022_sales_date_idx | | CREATE INDEX sales_apr2022_sales_date_idx ON partition_split_schema.sales_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+------------------------------+------------+-----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx1 | | CREATE INDEX sales_others_sales_date_idx1 ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211230) TO (2022...
+ ^
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+LINE 4: PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20...
+ ^
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211210) TO (2021...
+ ^
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211201) TO (2022...
+ ^
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+LINE 2: (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20...
+ ^
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_sales_amount_check"
+DETAIL: Failing row contains (1, 0, 03-11-2022).
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(-1) is not present in table "salesmans".
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(40) is not present in table "salesmans".
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+SELECT * FROM salesmans1_2;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans2_3;
+ salesman_id | salesman_name
+-------------+---------------
+ 2 | Ivanov
+(1 row)
+
+SELECT * FROM salesmans3_4;
+ salesman_id | salesman_name
+-------------+---------------
+ 3 | May
+(1 row)
+
+SELECT * FROM salesmans4_5;
+ salesman_id | salesman_name
+-------------+---------------
+ 4 | Ford
+(1 row)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+(2 rows)
+
+select * from salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+select * from salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_east" would overlap with another (not split) partition "sales_nord"
+LINE 3: ...ALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'...
+ ^
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+LINE 2: (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk...
+ ^
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+LINE 2: ...est FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ ^
+DROP TABLE sales_list;
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+ERROR: new partitions not have value NULL but split partition has
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+ERROR: new partitions not have value 'Volgograd' but split partition has
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_west;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | Smolensk | 500 | 03-03-2022
+ 5 | Deev | Voronezh | 250 | 03-07-2022
+ 11 | Muller | Bryansk | 650 | 03-05-2022
+ 14 | Plato | Voronezh | 950 | 03-05-2022
+(4 rows)
+
+SELECT * FROM sales_east;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 1 | Trump | Magadan | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+(2 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Ukhta | 1200 | 03-06-2022
+ 9 | May | Ukhta | 1200 | 03-11-2022
+ 10 | Halder | Murmansk | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_central;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 6 | Poirot | Kazan | 1000 | 03-01-2022
+ 12 | Smith | Volgograd | 350 | 03-10-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(4 rows)
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+ 13 | Gandi | Moscow | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Moscow | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 026e7a7767..7cd4deda9b 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_split partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_split.sql b/src/test/regress/sql/partition_split.sql
new file mode 100644
index 0000000000..40c71889b6
--- /dev/null
+++ b/src/test/regress/sql/partition_split.sql
@@ -0,0 +1,833 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+
+DROP TABLE sales_date CASCADE;
+
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_others;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+
+SELECT * FROM salesmans1_2;
+SELECT * FROM salesmans2_3;
+SELECT * FROM salesmans3_4;
+SELECT * FROM salesmans4_5;
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+select * from salesmans01_10;
+select * from salesmans10_20;
+select * from salesmans20_30;
+select * from salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok', 'Murmansk'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Voronezh', 'Volgograd'));
+
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk', NULL),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+DROP TABLE sales_list;
+
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok', NULL);
+
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+-- ERROR: new partitions not have value 'Volgograd' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', NULL));
+
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Murmansk', 'St. Petersburg', 'Ukhta');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Moscow', 'Voronezh', 'Smolensk', 'Bryansk', 'Magadan', 'Kazan', 'Khabarovsk', 'Volgograd', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Magadan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'Smolensk', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Moscow', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Voronezh', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Kazan', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Ukhta', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Murmansk', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Bryansk', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Volgograd', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Moscow', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Voronezh', 950, '2022-03-05');
+
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_west;
+SELECT * FROM sales_east;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_central;
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_central WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE sales_state = 'Moscow';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index a899944dcd..1c9265d575 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2667,6 +2667,7 @@ SpecialJoinInfo
SpinDelayStatus
SplitInterval
SplitLR
+SplitPartitionContext
SplitPageLayout
SplitPoint
SplitTextOutputData
--
2.40.1.windows.1
[text/plain] v29-0003-Documentation-for-ALTER-TABLE-SPLIT-PARTITION-ME.patch (9.8K, ../../[email protected]/4-v29-0003-Documentation-for-ALTER-TABLE-SPLIT-PARTITION-ME.patch)
download | inline diff:
From 0164d86e4d62cb35f514c1c32ff1659aedfa42c3 Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Tue, 28 Mar 2023 10:50:19 +0300
Subject: [PATCH v29 3/3] Documentation for ALTER TABLE SPLIT PARTITION/MERGE
PARTITIONS commands
---
doc/src/sgml/ref/alter_table.sgml | 138 +++++++++++++++++++++++++++++-
1 file changed, 135 insertions(+), 3 deletions(-)
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 6cdcd779ef..945228d84b 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,13 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO
+ (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT },
+ PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
+ INTO <replaceable class="parameter">partition_name</replaceable>
<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>
@@ -1118,14 +1125,113 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-split-partition">
+ <term><literal>SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }, PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])</literal></term>
+
+ <listitem>
+ <para>
+ This form splits a single partition of the target table. Hash-partitioning
+ is not supported. Bounds of new partitions should not overlap with new and
+ existing partitions (except <replaceable class="parameter">partition_name</replaceable>).
+ If the split partition is a DEFAULT partition, one of the new partitions must be DEFAULT.
+ In case one of the new partitions or one of existing partitions is DEFAULT,
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have spaces
+ between partitions bounds. If the partitioned table does not have a DEFAULT
+ partition, the DEFAULT partition can be defined as one of the new partitions.
+ </para>
+ <para>
+ In case new partitions do not contain a DEFAULT partition and the partitioned table
+ does not have a DEFAULT partition, the following must be true: sum bounds of
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... should be
+ equal to bound of split partition <replaceable class="parameter">partition_name</replaceable>.
+ One of the new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have
+ the same name as split partition <replaceable class="parameter">partition_name</replaceable>
+ (this is suitable in case of splitting a DEFAULT partition: we split it, but after
+ splitting we have a partition with the same name).
+ Only simple, non-partitioned partition can be split.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry id="sql-altertable-merge-partitions">
+ <term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
+
+ <listitem>
+ <para>
+ This form merge several partitions into one partition of the target table.
+ Hash-partitioning is not supported. If DEFAULT partition is not in the
+ list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ For range-partitioned tables is necessary that the ranges
+ of the partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] can
+ be merged into one range without spaces and overlaps (otherwise an error
+ will be generated). The combined range will be the range for the partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For list-partitioned tables the values lists of all partitions
+ <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] are
+ combined and form a list of values of partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ If DEFAULT partition is in the list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ The partition <replaceable class="parameter">partition_name</replaceable>
+ will be the DEFAULT partition.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For range- and list-partitioned tables the ranges and lists of values
+ of the merged partitions can be any.
+ </para>
+ </listitem>
+ </itemizedlist>
+ The new partition <replaceable class="parameter">partition_name</replaceable>
+ can have the same name as one of the merged partitions. Only simple,
+ non-partitioned partitions can be merged.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
</variablelist>
</para>
<para>
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
- <literal>ATTACH PARTITION</literal>, and
- <literal>DETACH PARTITION</literal> can be combined into
+ <literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
+ <literal>SPLIT PARTITION</literal>, and <literal>MERGE PARTITIONS</literal>
+ can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1368,7 +1474,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<term><replaceable class="parameter">partition_name</replaceable></term>
<listitem>
<para>
- The name of the table to attach as a new partition or to detach from this table.
+ The name of the table to attach as a new partition or to detach from this table,
+ or the name of split partition, or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1784,6 +1891,31 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To split a single partition of the range-partitioned table:
+<programlisting>
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2023 INTO
+ (PARTITION sales_feb2023 FOR VALUES FROM ('2023-02-01') TO ('2023-03-01'),
+ PARTITION sales_mar2023 FOR VALUES FROM ('2023-03-01') TO ('2023-04-01'),
+ PARTITION sales_apr2023 FOR VALUES FROM ('2023-04-01') TO ('2023-05-01'));
+</programlisting></para>
+
+ <para>
+ To split a single partition of the list-partitioned table:
+<programlisting>
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Voronezh', 'Smolensk', 'Bryansk'),
+ PARTITION sales_east FOR VALUES IN ('Magadan', 'Khabarovsk', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Moscow', 'Kazan', 'Volgograd'));
+</programlisting></para>
+
+ <para>
+ To merge several partitions into one partition of the target table:
+<programlisting>
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central)
+ INTO sales_all;
+</programlisting></para>
+
</refsect1>
<refsect1>
--
2.40.1.windows.1
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Add SPLIT PARTITION/MERGE PARTITIONS commands
@ 2024-04-04 19:17 Alexander Korotkov <[email protected]>
parent: Dmitry Koval <[email protected]>
0 siblings, 1 reply; 9+ messages in thread
From: Alexander Korotkov @ 2024-04-04 19:17 UTC (permalink / raw)
To: Dmitry Koval <[email protected]>; +Cc: [email protected]
Hi!
On Sun, Mar 31, 2024 at 5:12 AM Dmitry Koval <[email protected]> wrote:
> Patch stop applying due to changes in upstream.
> Here is a rebased version.
I've revised the patchset. Now there are two self-contained patches
coming with the documentation. Also, now each command has a paragraph
in the "Data definition" chapter. Also documentation and tests
contain geographical partitioning with all Russian cities. I think
that might create a country-centric feeling for the reader. I've
edited that to make cities spread around the world to reflect the
international spirit. Hope you're OK with this. Now, both merge and
split commands make new partitions using the parent table as the
template. And some other edits to comments, commit messages,
documentation etc.
I think this patch is well-reviewed and also has quite straightforward
implementation. The major limitation of holding ACCESS EXCLUSIVE LOCK
on the parent table is well-documented. I'm going to push this if no
objections.
------
Regards,
Alexander Korotkov
Attachments:
[application/octet-stream] v30-0002-Implement-ALTER-TABLE-.-SPLIT-PARTITION-.-comman.patch (185.1K, ../../CAPpHfduNYkMVuUSxZjD6u4tZG6aKdhgQcmhr-K9OQfeg56MNww@mail.gmail.com/2-v30-0002-Implement-ALTER-TABLE-.-SPLIT-PARTITION-.-comman.patch)
download | inline diff:
From 8b6ac3cf33f4999bb1352e7de8a10e59292f0f08 Mon Sep 17 00:00:00 2001
From: Alexander Korotkov <[email protected]>
Date: Tue, 2 Apr 2024 23:27:29 +0300
Subject: [PATCH v30 2/2] Implement ALTER TABLE ... SPLIT PARTITION ... command
This new DDL command splits a single partition into several parititions.
Just like ALTER TABLE ... MERGE PARTITIONS ... command, new patitions are
created using createPartitionTable() function with parent partition as the
template.
This commit comprises quite naive implementation which works in single process
and holds the ACCESS EXCLUSIVE LOCK on the parent table during all the
operations including the tuple routing. This is why this new DDL command
can't be recommended for large partitioned tables under a high load. However,
this implementation come in handy in certain cases even as is.
Also, it could be used as a foundation for future implementations with lesser
locking and possibly parallel.
Discussion: https://postgr.es/m/c73a1746-0cd0-6bdd-6b23-3ae0b7c0c582%40postgrespro.ru
Author: Dmitry Koval
Reviewed-by: Matthias van de Meent, Laurenz Albe, Zhihong Yu, Justin Pryzby
Reviewed-by: Alvaro Herrera, Robert Haas, Stephane Tachoires
---
doc/src/sgml/ddl.sgml | 19 +
doc/src/sgml/ref/alter_table.sgml | 65 +-
src/backend/commands/tablecmds.c | 411 +++++
src/backend/parser/gram.y | 38 +-
src/backend/parser/parse_utilcmd.c | 62 +-
src/backend/partitioning/partbounds.c | 657 ++++++++
src/backend/utils/adt/ruleutils.c | 18 +
src/include/nodes/parsenodes.h | 1 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 5 +
src/include/utils/ruleutils.h | 2 +
.../isolation/expected/partition-split.out | 190 +++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-split.spec | 54 +
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_split.out | 1417 +++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_split.sql | 833 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
19 files changed, 3766 insertions(+), 14 deletions(-)
create mode 100644 src/test/isolation/expected/partition-split.out
create mode 100644 src/test/isolation/specs/partition-split.spec
create mode 100644 src/test/regress/expected/partition_split.out
create mode 100644 src/test/regress/sql/partition_split.sql
diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index f9f2778b3d7..8ff9a520ca9 100644
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -4400,6 +4400,25 @@ ALTER TABLE measurement
measurement_y2006m03) INTO measurement_y2006q1;
</programlisting>
</para>
+
+ <para>
+ Similarly to merging multiple table partitions, there is an option for
+ splitting a single partition into multiple using the
+ <link linkend="sql-altertable-split-partition"><command>ALTER TABLE ... SPLIT PARTITION</command></link>.
+ This feature could come in handy when one partition grows too big
+ and needs to be split into multiple. It's important to note that
+ this operation is not supported for hash-partitioned tables and acquires
+ an <literal>ACCESS EXCLUSIVE</literal> lock, which could impact high-load
+ systems due to the lock's restrictive nature. For example, we can split
+ the quarter partition back to monthly partitions:
+<programlisting>
+ALTER TABLE measurement SPLIT PARTITION measurement_y2006q1 INTO
+ (PARTITION measurement_y2006m01 FOR VALUES FROM ('2006-01-01') TO ('2006-02-01'),
+ PARTITION measurement_y2006m02 FOR VALUES FROM ('2006-02-01') TO ('2006-03-01'),
+ PARTITION measurement_y2006m03 FOR VALUES FROM ('2006-03-01') TO ('2006-04-01'));
+</programlisting>
+ </para>
+
</sect3>
<sect3 id="ddl-partitioning-declarative-limitations">
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index e0a98bc5385..a1703155854 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,10 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO
+ (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT },
+ PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
INTO <replaceable class="parameter">partition_name</replaceable>
@@ -1121,6 +1125,44 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-split-partition">
+ <term><literal>SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }, PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])</literal></term>
+
+ <listitem>
+ <para>
+ This form splits a single partition of the target table. Hash-partitioning
+ is not supported. Bounds of new partitions should not overlap with new and
+ existing partitions (except <replaceable class="parameter">partition_name</replaceable>).
+ If the split partition is a DEFAULT partition, one of the new partitions must be DEFAULT.
+ In case one of the new partitions or one of existing partitions is DEFAULT,
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have spaces
+ between partitions bounds. If the partitioned table does not have a DEFAULT
+ partition, the DEFAULT partition can be defined as one of the new partitions.
+ </para>
+ <para>
+ In case new partitions do not contain a DEFAULT partition and the partitioned table
+ does not have a DEFAULT partition, the following must be true: sum bounds of
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... should be
+ equal to bound of split partition <replaceable class="parameter">partition_name</replaceable>.
+ One of the new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have
+ the same name as split partition <replaceable class="parameter">partition_name</replaceable>
+ (this is suitable in case of splitting a DEFAULT partition: we split it, but after
+ splitting we have a partition with the same name).
+ Only simple, non-partitioned partition can be split.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
<varlistentry id="sql-altertable-merge-partitions">
<term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
@@ -1188,7 +1230,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
<literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
- and <literal>MERGE PARTITIONS</literal> can be combined into
+ <literal>SPLIT PARTITION</literal>, and <literal>MERGE PARTITIONS</literal>
+ can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1432,7 +1475,7 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<listitem>
<para>
The name of the table to attach as a new partition or to detach from this table,
- or the name of the new merged partition.
+ or the name of split partition, or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1848,6 +1891,24 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To split a single partition of the range-partitioned table:
+<programlisting>
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2023 INTO
+ (PARTITION sales_feb2023 FOR VALUES FROM ('2023-02-01') TO ('2023-03-01'),
+ PARTITION sales_mar2023 FOR VALUES FROM ('2023-03-01') TO ('2023-04-01'),
+ PARTITION sales_apr2023 FOR VALUES FROM ('2023-04-01') TO ('2023-05-01'));
+</programlisting></para>
+
+ <para>
+ To split a single partition of the list-partitioned table:
+<programlisting>
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+</programlisting></para>
+
<para>
To merge several partitions into one partition of the target table:
<programlisting>
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 05e86de8ebc..582890a3025 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,9 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab,
+ Relation rel, PartitionCmd *cmd,
+ AlterTableUtilityContext *context);
static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
PartitionCmd *cmd, AlterTableUtilityContext *context);
@@ -4740,6 +4743,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_SplitPartition:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
case AT_MergePartitions:
cmd_lockmode = AccessExclusiveLock;
break;
@@ -5163,6 +5170,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_SplitPartition:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
case AT_MergePartitions:
ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
/* No command-specific prep needed */
@@ -5565,6 +5577,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_SplitPartition:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecSplitPartition(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
case AT_MergePartitions:
cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
cur_pass, context);
@@ -6567,6 +6587,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_SplitPartition:
+ return "SPLIT PARTITION";
case AT_MergePartitions:
return "MERGE PARTITIONS";
case AT_AddIdentity:
@@ -20852,6 +20874,260 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+/*
+ * Struct with context of new partition for insert rows from splited partition
+ */
+typedef struct SplitPartitionContext
+{
+ ExprState *partqualstate; /* expression for check slot for partition
+ * (NULL for DEFAULT partition) */
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot; /* slot for insert row into partition */
+ Relation partRel; /* relation for partition */
+} SplitPartitionContext;
+
+
+/*
+ * createSplitPartitionContext: create context for partition and fill it
+ */
+static SplitPartitionContext *
+createSplitPartitionContext(Relation partRel)
+{
+ SplitPartitionContext *pc;
+
+ pc = (SplitPartitionContext *) palloc0(sizeof(SplitPartitionContext));
+ pc->partRel = partRel;
+
+ /*
+ * Prepare a BulkInsertState for table_tuple_insert. The FSM is empty, so
+ * don't bother using it.
+ */
+ pc->bistate = GetBulkInsertState();
+
+ /* Create tuple slot for new partition. */
+ pc->dstslot = MakeSingleTupleTableSlot(RelationGetDescr(pc->partRel),
+ table_slot_callbacks(pc->partRel));
+ ExecStoreAllNullTuple(pc->dstslot);
+
+ return pc;
+}
+
+/*
+ * deleteSplitPartitionContext: delete context for partition
+ */
+static void
+deleteSplitPartitionContext(SplitPartitionContext *pc, int ti_options)
+{
+ ExecDropSingleTupleTableSlot(pc->dstslot);
+ FreeBulkInsertState(pc->bistate);
+
+ table_finish_bulk_insert(pc->partRel, ti_options);
+
+ pfree(pc);
+}
+
+/*
+ * moveSplitTableRows: scan split partition (splitRel) of partitioned table
+ * (rel) and move rows into new partitions.
+ *
+ * New partitions description:
+ * partlist: list of pointers to SinglePartitionSpec structures.
+ * newPartRels: list of Relation's.
+ * defaultPartOid: oid of DEFAULT partition, for table rel.
+ */
+static void
+moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPartRels, Oid defaultPartOid)
+{
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ CommandId mycid;
+ EState *estate;
+ ListCell *listptr,
+ *listptr2;
+ TupleTableSlot *srcslot;
+ ExprContext *econtext;
+ TableScanDesc scan;
+ Snapshot snapshot;
+ MemoryContext oldCxt;
+ List *partContexts = NIL;
+ TupleConversionMap *tuple_map;
+ SplitPartitionContext *defaultPartCtx = NULL,
+ *pc;
+ bool isOldDefaultPart = false;
+
+ mycid = GetCurrentCommandId(true);
+
+ estate = CreateExecutorState();
+
+ forboth(listptr, partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ pc = createSplitPartitionContext((Relation) lfirst(listptr2));
+
+ if (sps->bound->is_default)
+ {
+ /* We should not create constraint for detached DEFAULT partition. */
+ defaultPartCtx = pc;
+ }
+ else
+ {
+ List *partConstraint;
+
+ /* Build expression execution states for partition check quals. */
+ partConstraint = get_qual_from_partbound(rel, sps->bound);
+ partConstraint =
+ (List *) eval_const_expressions(NULL,
+ (Node *) partConstraint);
+ /* Make boolean expression for ExecCheck(). */
+ partConstraint = list_make1(make_ands_explicit(partConstraint));
+
+ /*
+ * Map the vars in the constraint expression from rel's attnos to
+ * splitRel's.
+ */
+ partConstraint = map_partition_varattnos(partConstraint,
+ 1, splitRel, rel);
+
+ pc->partqualstate =
+ ExecPrepareExpr((Expr *) linitial(partConstraint), estate);
+ Assert(pc->partqualstate != NULL);
+ }
+
+ /* Store partition context into list. */
+ partContexts = lappend(partContexts, pc);
+ }
+
+ /*
+ * Create partition context for DEFAULT partition. We can insert values
+ * into this partition in case spaces with values between new partitions.
+ */
+ if (!defaultPartCtx && OidIsValid(defaultPartOid))
+ {
+ /* Indicate that we allocate context for old DEFAULT partition */
+ isOldDefaultPart = true;
+ defaultPartCtx = createSplitPartitionContext(table_open(defaultPartOid, AccessExclusiveLock));
+ }
+
+ econtext = GetPerTupleExprContext(estate);
+
+ /* Create necessary tuple slot. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(splitRel),
+ table_slot_callbacks(splitRel));
+
+ /*
+ * Map computing for moving attributes of split partition to new partition
+ * (for first new partition but other new partitions can use the same
+ * map).
+ */
+ pc = (SplitPartitionContext *) lfirst(list_head(partContexts));
+ tuple_map = convert_tuples_by_name(RelationGetDescr(splitRel),
+ RelationGetDescr(pc->partRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(splitRel, snapshot, 0, NULL);
+
+ /*
+ * Switch to per-tuple memory context and reset it for each tuple
+ * produced, so we don't leak memory.
+ */
+ oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(estate));
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ bool found = false;
+ bool insert_indexes;
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ econtext->ecxt_scantuple = srcslot;
+
+ /* Search partition for current slot srcslot. */
+ foreach(listptr, partContexts)
+ {
+ pc = (SplitPartitionContext *) lfirst(listptr);
+
+ if (pc->partqualstate /* skip DEFAULT partition */ &&
+ ExecCheck(pc->partqualstate, econtext))
+ {
+ found = true;
+ break;
+ }
+ ResetExprContext(econtext);
+ }
+ if (!found)
+ {
+ /* Use DEFAULT partition if it exists. */
+ if (defaultPartCtx)
+ pc = defaultPartCtx;
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_CHECK_VIOLATION),
+ errmsg("can not find partition for split partition row"),
+ errtable(splitRel)));
+ }
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, pc->dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = pc->dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /*
+ * Write the tuple out to the new relation. We ignore the
+ * 'insert_indexes' flag since newPartRel has no indexes anyway.
+ */
+ (void) table_tuple_insert(pc->partRel, insertslot, mycid,
+ ti_options, pc->bistate, &insert_indexes);
+
+ ResetExprContext(econtext);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ MemoryContextSwitchTo(oldCxt);
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+
+ FreeExecutorState(estate);
+
+ foreach(listptr, partContexts)
+ deleteSplitPartitionContext((SplitPartitionContext *) lfirst(listptr), ti_options);
+
+ /* Need to close table and free buffers for DEFAULT partition. */
+ if (isOldDefaultPart)
+ {
+ Relation defaultPartRel = defaultPartCtx->partRel;
+
+ deleteSplitPartitionContext(defaultPartCtx, ti_options);
+ /* Keep the lock until commit. */
+ table_close(defaultPartRel, NoLock);
+ }
+}
+
/*
* createPartitionTable: create table for new partition with given name
* (newPartName) like table (modelRelName)
@@ -20906,6 +21182,141 @@ createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
NULL);
}
+/*
+ * ALTER TABLE <name> SPLIT PARTITION <partition-name> INTO <partition-list>
+ */
+static void
+ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation splitRel;
+ Oid splitRelOid;
+ char relname[NAMEDATALEN];
+ Oid namespaceId;
+ ListCell *listptr,
+ *listptr2;
+ bool isSameName = false;
+ char tmpRelName[NAMEDATALEN];
+ List *newPartRels = NIL;
+ ObjectAddress object;
+ RangeVar *parentName;
+ Oid defaultPartOid;
+
+ defaultPartOid = get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+
+ /*
+ * We are going to detach and remove this partition: need to use exclusive
+ * lock for prevent DML-queries to the partition.
+ */
+ splitRel = table_openrv(cmd->name, AccessExclusiveLock);
+
+ if (splitRel->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot split non-table partition \"%s\"",
+ RelationGetRelationName(splitRel))));
+
+ splitRelOid = RelationGetRelid(splitRel);
+
+ /* Check descriptions of new partitions. */
+ foreach(listptr, cmd->partlist)
+ {
+ Oid existing_relid;
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ strlcpy(relname, sps->name->relname, NAMEDATALEN);
+
+ /*
+ * Look up the namespace in which we are supposed to create the
+ * partition, check we have permission to create there, lock it
+ * against concurrent drop, and mark stmt->relation as
+ * RELPERSISTENCE_TEMP if a temporary namespace is selected.
+ */
+ namespaceId =
+ RangeVarGetAndCheckCreationNamespace(sps->name, NoLock, NULL);
+
+ /*
+ * This would fail later on anyway, if the relation already exists.
+ * But by catching it here we can emit a nicer error message.
+ */
+ existing_relid = get_relname_relid(relname, namespaceId);
+ if (existing_relid == splitRelOid && !isSameName)
+ /* One new partition can have the same name as split partition. */
+ isSameName = true;
+ else if (existing_relid != InvalidOid)
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("relation \"%s\" already exists", relname)));
+ }
+
+ /* Detach split partition. */
+ RemoveInheritance(splitRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, splitRel, false, defaultPartOid);
+
+ /*
+ * If new partition has the same name as split partition then we should
+ * rename split partition for reuse name.
+ */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ sprintf(tmpRelName, "split-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ RenameRelationInternal(splitRelOid, tmpRelName, false, false);
+
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible after rename.
+ */
+ CommandCounterIncrement();
+ }
+
+ /* Create new partitions (like split partition), without indexes. */
+ parentName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1);
+ foreach(listptr, cmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel;
+
+ createPartitionTable(sps->name, parentName, context);
+
+ /* Open the new partition and acquire exclusive lock on it. */
+ newPartRel = table_openrv(sps->name, AccessExclusiveLock);
+
+ newPartRels = lappend(newPartRels, newPartRel);
+ }
+
+ /* Copy data from split partition to new partitions. */
+ moveSplitTableRows(rel, splitRel, cmd->partlist, newPartRels, defaultPartOid);
+ /* Keep the lock until commit. */
+ table_close(splitRel, NoLock);
+
+ /* Attach new partitions to partitioned table. */
+ forboth(listptr, cmd->partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel = (Relation) lfirst(listptr2);
+
+ /* wqueue = NULL: verification for each cloned constraint is not need. */
+ attachPartitionTable(NULL, rel, newPartRel, sps->bound);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+ }
+
+ /* Drop split partition. */
+ object.classId = RelationRelationId;
+ object.objectId = splitRelOid;
+ object.objectSubId = 0;
+ /* Probably DROP_CASCADE is not needed. */
+ performDeletion(&object, DROP_RESTRICT, 0);
+}
+
/*
* moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
* of the partitioned table (rel) and move rows into the new partition
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index f2b0d963d18..e6c12f5287e 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -270,6 +270,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
PartitionElem *partelem;
PartitionSpec *partspec;
PartitionBoundSpec *partboundspec;
+ SinglePartitionSpec *singlepartspec;
RoleSpec *rolespec;
PublicationObjSpec *publicationobjectspec;
struct SelectLimit *selectlimit;
@@ -647,6 +648,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
%type <partelem> part_elem
%type <list> part_params
%type <partboundspec> PartitionBoundSpec
+%type <singlepartspec> SinglePartitionSpec
+%type <list> partitions_list
%type <list> hash_partbound
%type <defelt> hash_partbound_elem
@@ -772,7 +775,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
SAVEPOINT SCALAR SCHEMA SCHEMAS SCROLL SEARCH SECOND_P SECURITY SELECT
SEQUENCE SEQUENCES
SERIALIZABLE SERVER SESSION SESSION_USER SET SETS SETOF SHARE SHOW
- SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SOURCE SQL_P STABLE STANDALONE_P
+ SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SPLIT SOURCE SQL_P STABLE STANDALONE_P
START STATEMENT STATISTICS STDIN STDOUT STORAGE STORED STRICT_P STRING_P STRIP_P
SUBSCRIPTION SUBSTRING SUPPORT SYMMETRIC SYSID SYSTEM_P SYSTEM_USER
@@ -2302,6 +2305,23 @@ alter_table_cmds:
| alter_table_cmds ',' alter_table_cmd { $$ = lappend($1, $3); }
;
+partitions_list:
+ SinglePartitionSpec { $$ = list_make1($1); }
+ | partitions_list ',' SinglePartitionSpec { $$ = lappend($1, $3); }
+ ;
+
+SinglePartitionSpec:
+ PARTITION qualified_name PartitionBoundSpec
+ {
+ SinglePartitionSpec *n = makeNode(SinglePartitionSpec);
+
+ n->name = $2;
+ n->bound = $3;
+
+ $$ = n;
+ }
+ ;
+
partition_cmd:
/* ALTER TABLE <name> ATTACH PARTITION <table_name> FOR VALUES */
ATTACH PARTITION qualified_name PartitionBoundSpec
@@ -2346,6 +2366,20 @@ partition_cmd:
n->def = (Node *) cmd;
$$ = (Node *) n;
}
+ /* ALTER TABLE <name> SPLIT PARTITION <partition_name> INTO () */
+ | SPLIT PARTITION qualified_name INTO '(' partitions_list ')'
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_SplitPartition;
+ cmd->name = $3;
+ cmd->bound = NULL;
+ cmd->partlist = $6;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
/* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
| MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
{
@@ -17615,6 +17649,7 @@ unreserved_keyword:
| SKIP
| SNAPSHOT
| SOURCE
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
@@ -18248,6 +18283,7 @@ bare_label_keyword:
| SNAPSHOT
| SOME
| SOURCE
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index 48a23c7ca42..88a4a41186a 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -136,7 +136,7 @@ static void transformConstraintAttrs(CreateStmtContext *cxt,
List *constraintList);
static void transformColumnType(CreateStmtContext *cxt, ColumnDef *column);
static void setSchemaName(const char *context_schema, char **stmt_schema_name);
-static void transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd);
+static void transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound);
static List *transformPartitionRangeBounds(ParseState *pstate, List *blist,
Relation parent);
static void validateInfiniteBounds(ParseState *pstate, List *blist);
@@ -3415,6 +3415,43 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForSplit
+ * Analyze the ALTER TABLLE ... SPLIT PARTITION command
+ *
+ * For each new partition sps->bound is set to the transformed value of bound.
+ * Does checks for bounds of new partitions.
+ */
+static void
+transformPartitionCmdForSplit(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Relation parent = cxt->rel;
+ Oid splitPartOid;
+ ListCell *listptr;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ /* Transform partition bounds for all partitions in the list: */
+ foreach(listptr, partcmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ cxt->partbound = NULL;
+ transformPartitionCmd(cxt, sps->bound);
+ /* Assign transformed value of the partition bound. */
+ sps->bound = cxt->partbound;
+ }
+
+ splitPartOid = RangeVarGetRelid(partcmd->name, NoLock, false);
+
+ /* Then we should check partitions with transformed bounds. */
+ check_partitions_for_split(parent, splitPartOid, partcmd->name, partcmd->partlist, cxt->pstate);
+}
+
+
/*
* transformPartitionCmdForMerge
* Analyze the ALTER TABLLE ... MERGE PARTITIONS command
@@ -3751,7 +3788,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
- transformPartitionCmd(&cxt, partcmd);
+ transformPartitionCmd(&cxt, partcmd->bound);
/* assign transformed value of the partition bound */
partcmd->bound = cxt.partbound;
}
@@ -3759,6 +3796,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_SplitPartition:
case AT_MergePartitions:
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
@@ -3767,7 +3805,11 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("list of new partitions should contains at least two items")));
- transformPartitionCmdForMerge(&cxt, partcmd);
+
+ if (cmd->subtype == AT_SplitPartition)
+ transformPartitionCmdForSplit(&cxt, partcmd);
+ else
+ transformPartitionCmdForMerge(&cxt, partcmd);
newcmds = lappend(newcmds, cmd);
break;
}
@@ -4172,13 +4214,13 @@ setSchemaName(const char *context_schema, char **stmt_schema_name)
/*
* transformPartitionCmd
- * Analyze the ATTACH/DETACH PARTITION command
+ * Analyze the ATTACH/DETACH/SPLIT PARTITION command
*
- * In case of the ATTACH PARTITION command, cxt->partbound is set to the
- * transformed value of cmd->bound.
+ * In case of the ATTACH/SPLIT PARTITION command, cxt->partbound is set to the
+ * transformed value of bound.
*/
static void
-transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
+transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound)
{
Relation parentRel = cxt->rel;
@@ -4187,9 +4229,9 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
case RELKIND_PARTITIONED_TABLE:
/* transform the partition bound, if any */
Assert(RelationGetPartitionKey(parentRel) != NULL);
- if (cmd->bound != NULL)
+ if (bound != NULL)
cxt->partbound = transformPartitionBound(cxt->pstate, parentRel,
- cmd->bound);
+ bound);
break;
case RELKIND_PARTITIONED_INDEX:
@@ -4197,7 +4239,7 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
* A partitioned index cannot have a partition bound set. ALTER
* INDEX prevents that with its grammar, but not ALTER TABLE.
*/
- if (cmd->bound != NULL)
+ if (bound != NULL)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("\"%s\" is not a partitioned table",
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index 9ed80d721ed..c36e26ba4bd 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -5040,10 +5040,69 @@ check_two_partitions_bounds_range(Relation parent,
}
}
+/*
+ * check_partitions_not_overlap_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * This is a helper function for check_partitions_for_split().
+ * Checks that the values of the new partitions do not overlap.
+ *
+ * parent: partitioned table
+ * parts: array of SinglePartitionSpec structs with info about split partitions
+ * nparts: size of array "parts"
+ */
+static void
+check_partitions_not_overlap_list(Relation parent,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key PG_USED_FOR_ASSERTS_ONLY = RelationGetPartitionKey(parent);
+ int overlap_location = -1;
+ int i,
+ j;
+ SinglePartitionSpec *sps1,
+ *sps2;
+ List *overlap;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ for (i = 0; i < nparts; i++)
+ {
+ sps1 = parts[i];
+
+ for (j = i + 1; j < nparts; j++)
+ {
+ sps2 = parts[j];
+
+ /*
+ * Calculate intersection between values of two partitions.
+ */
+ overlap = list_intersection(sps1->bound->listdatums,
+ sps2->bound->listdatums);
+ if (list_length(overlap) > 0)
+ {
+ Const *val = (Const *) lfirst(list_head(overlap));
+
+ overlap_location = val->location;
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another new partition \"%s\"",
+ sps1->name->relname, sps2->name->relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ }
+ }
+}
+
/*
* get_partition_bound_spec
*
* Returns description of partition with Oid "partOid" and name "name".
+ *
+ * partOid: partition Oid
+ * name: partition name
*/
static PartitionBoundSpec *
get_partition_bound_spec(Oid partOid, RangeVar *name)
@@ -5076,6 +5135,604 @@ get_partition_bound_spec(Oid partOid, RangeVar *name)
return boundspec;
}
+/*
+ * check_partition_bounds_for_split_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * Checks that bounds of new partition "spec" is inside bounds of split
+ * partition (with Oid splitPartOid). If first=true (this means that "spec" is
+ * the first of new partitions) then lower bound of "spec" should be equal (or
+ * greater than or equal in case defaultPart=true) to lower bound of split
+ * partition. If last=true (this means that "spec" is the last of new
+ * partitions) then upper bound of of "spec" should be equal (or less than or
+ * equal in case defaultPart=true) to upper bound of split partition.
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * first: true in case new partition "spec" is first of new partitions
+ * last: true in case new partition "spec" is last of new partitions
+ * defaultPart: true in case partitioned table has DEFAULT partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_range(Relation parent,
+ char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ bool first,
+ bool last,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *lower,
+ *upper;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+ Assert(spec->strategy == PARTITION_STRATEGY_RANGE);
+
+ lower = make_one_partition_rbound(key, -1, spec->lowerdatums, true);
+ upper = make_one_partition_rbound(key, -1, spec->upperdatums, false);
+
+ /*
+ * First check if the resulting range would be empty with specified lower
+ * and upper bounds. partition_rbound_cmp cannot return zero here, since
+ * the lower-bound flags are different.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, upper);
+ Assert(cmpval != 0);
+ if (cmpval > 0)
+ {
+ /* Point to problematic key in the lower datums list. */
+ PartitionRangeDatum *datum = list_nth(spec->lowerdatums, cmpval - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("empty range bound specified for partition \"%s\"",
+ relname),
+ errdetail("Specified lower bound %s is greater than or equal to upper bound %s.",
+ get_range_partbound_string(spec->lowerdatums),
+ get_range_partbound_string(spec->upperdatums)),
+ parser_errposition(pstate, datum->location)));
+ }
+
+ /* Need to check first and last partitions (from set of new partitions) */
+ if (first || last)
+ {
+ PartitionBoundSpec *split_spec = get_partition_bound_spec(splitPartOid, splitPartName);
+ bool overlap = false;
+
+ if (first)
+ {
+ PartitionRangeBound *split_lower;
+
+ split_lower = make_one_partition_rbound(key, -1, split_spec->lowerdatums, true);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, split_lower);
+
+ /*
+ * Lower bound of "spec" should be equal (or greater than or equal
+ * in case defaultPart=true) to lower bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ overlap = true;
+ }
+ else
+ {
+ PartitionRangeBound *split_upper;
+
+ split_upper = make_one_partition_rbound(key, -1, split_spec->upperdatums, false);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ upper->datums, upper->kind,
+ false, split_upper);
+
+ /*
+ * Upper bound of of "spec" should be equal (or less than or equal
+ * in case defaultPart=true) to upper bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval > 0))
+ overlap = true;
+ }
+
+ if (overlap)
+ {
+ PartitionRangeDatum *datum;
+
+ datum = list_nth(first ? spec->lowerdatums : spec->upperdatums, abs(cmpval) - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("%s bound of partition \"%s\" is %s %s bound of split partition",
+ first ? "lower" : "upper",
+ relname,
+ defaultPart ? (first ? "less than" : "greater than") : "not equals to",
+ first ? "lower" : "upper"),
+ parser_errposition(pstate, datum->location)));
+ }
+ }
+}
+
+/*
+ * check_partition_bounds_for_split_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that bounds of new partition is inside bounds of split partition
+ * (with Oid splitPartOid).
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_list(Relation parent, char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int with = -1;
+ bool overlap = false;
+ int overlap_location = -1;
+ ListCell *cell;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+ Assert(spec->strategy == PARTITION_STRATEGY_LIST);
+ Assert(boundinfo && boundinfo->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Search each value of new partition "spec" in existing partitions. All
+ * of them should be in split partition (with Oid splitPartOid).
+ */
+ foreach(cell, spec->listdatums)
+ {
+ Const *val = lfirst_node(Const, cell);
+
+ overlap_location = val->location;
+ if (!val->constisnull)
+ {
+ int offset;
+ bool equal;
+
+ offset = partition_list_bsearch(&key->partsupfunc[0],
+ key->partcollation,
+ boundinfo,
+ val->constvalue,
+ &equal);
+ if (offset >= 0 && equal)
+ {
+ with = boundinfo->indexes[offset];
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have this value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ else if (partition_bound_accepts_nulls(boundinfo))
+ {
+ with = boundinfo->null_index;
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have NULL value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+
+ if (overlap)
+ {
+ Assert(with >= 0);
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another (not split) partition \"%s\"",
+ relname, get_rel_name(partdesc->oids[with])),
+ parser_errposition(pstate, overlap_location)));
+ }
+}
+
+/*
+ * find_value_in_new_partitions_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Function returns true in case any of new partitions contains value "value".
+ *
+ * partsupfunc: information about comparison function associated with the partition key
+ * partcollation: partitioning collation
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * value: the value that we are looking for
+ * isnull: true if the value that we are looking for is NULL
+ */
+static bool
+find_value_in_new_partitions_list(FmgrInfo *partsupfunc,
+ Oid *partcollation,
+ SinglePartitionSpec **parts,
+ int nparts,
+ Datum value,
+ bool isnull)
+{
+ ListCell *valptr;
+ int i;
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = parts[i];
+
+ foreach(valptr, sps->bound->listdatums)
+ {
+ Const *val = lfirst_node(Const, valptr);
+
+ if (isnull && val->constisnull)
+ return true;
+
+ if (!isnull && !val->constisnull)
+ {
+ if (DatumGetInt32(FunctionCall2Coll(&partsupfunc[0],
+ partcollation[0],
+ val->constvalue,
+ value)) == 0)
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/*
+ * check_parent_values_in_new_partitions
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that all values of split partition (with Oid partOid) contains in new
+ * partitions.
+ *
+ * parent: partitioned table
+ * partOid: split partition Oid
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_parent_values_in_new_partitions(Relation parent,
+ Oid partOid,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int i;
+ bool found = true;
+ bool searchNull = false;
+ Datum datum = PointerGetDatum(NULL);
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Special processing for NULL value. Search NULL-value if it contains
+ * split partition (partOid).
+ */
+ if (partition_bound_accepts_nulls(boundinfo) &&
+ partdesc->oids[boundinfo->null_index] == partOid)
+ {
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, true))
+ {
+ found = false;
+ searchNull = true;
+ }
+ }
+
+ /*
+ * Search all values of split partition with partOid in PartitionDesc of
+ * partitionde table.
+ */
+ for (i = 0; i < boundinfo->ndatums; i++)
+ {
+ if (partdesc->oids[boundinfo->indexes[i]] == partOid)
+ {
+ /* We found value that split partition contains. */
+ datum = boundinfo->datums[i][0];
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, false))
+ {
+ found = false;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ {
+ Const *notFoundVal;
+
+ if (!searchNull)
+ /* Make Const for get string representation of not found value. */
+ notFoundVal = makeConst(key->parttypid[0],
+ key->parttypmod[0],
+ key->parttypcoll[0],
+ key->parttyplen[0],
+ datum,
+ false, /* isnull */
+ key->parttypbyval[0]);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partitions not have value %s but split partition has",
+ searchNull ? "NULL" : get_list_partvalue_string(notFoundVal))));
+ }
+}
+
+/*
+ * check_partitions_for_split
+ *
+ * Checks new partitions for SPLIT PARTITIONS command:
+ * 1. DEFAULT partition should be one.
+ * 2. New partitions should have different names
+ * (with existing partitions too).
+ * 3. Bounds of new partitions should not overlap with new and existing
+ * partitions.
+ * 4. In case split partition is DEFAULT partition, one of new partitions
+ * should be DEFAULT.
+ * 5. In case new partitions or existing partitions contains DEFAULT
+ * partition, new partitions can have any bounds inside split
+ * partition bound (can be spaces between partitions bounds).
+ * 6. In case partitioned table does not have DEFAULT partition, DEFAULT
+ * partition can be defined as one of new partition.
+ * 7. In case new partitions not contains DEFAULT partition and
+ * partitioned table does not have DEFAULT partition the following
+ * should be true: sum bounds of new partitions should be equal
+ * to bound of split partition.
+ *
+ * parent: partitioned table
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * list: list of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate)
+{
+ PartitionKey key;
+ char strategy;
+ Oid defaultPartOid;
+ bool isSplitPartDefault;
+ bool existsDefaultPart;
+ ListCell *listptr;
+ int default_index = -1;
+ int i,
+ j;
+ SinglePartitionSpec **new_parts;
+ SinglePartitionSpec *spsPrev = NULL;
+ int nparts = 0;
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ switch (strategy)
+ {
+ case PARTITION_STRATEGY_LIST:
+ case PARTITION_STRATEGY_RANGE:
+ {
+ /*
+ * Make array new_parts with new partitions except DEFAULT
+ * partition.
+ */
+ new_parts = (SinglePartitionSpec **)
+ palloc0(list_length(partlist) * sizeof(SinglePartitionSpec *));
+ i = 0;
+ foreach(listptr, partlist)
+ {
+ SinglePartitionSpec *sps =
+ (SinglePartitionSpec *) lfirst(listptr);
+
+ if (sps->bound->is_default)
+ {
+ if (default_index >= 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("DEFAULT partition should be one")),
+ parser_errposition(pstate, sps->name->location));
+ default_index = i;
+ }
+ else
+ {
+ new_parts[nparts++] = sps;
+ }
+ i++;
+ }
+ }
+ break;
+
+ case PARTITION_STRATEGY_HASH:
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be split")));
+ break;
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ break;
+ }
+
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ PartitionRangeBound **lower_bounds;
+ SinglePartitionSpec **tmp_new_parts;
+
+ /*
+ * For simplify check for ranges of new partitions need to sort all
+ * partitions in ascending order of them bounds (we compare upper
+ * bound only).
+ */
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /* Create array of lower bounds. */
+ for (i = 0; i < nparts; i++)
+ {
+ lower_bounds[i] = make_one_partition_rbound(key, i,
+ new_parts[i]->bound->lowerdatums, true);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Reorder array of partitions. */
+ tmp_new_parts = new_parts;
+ new_parts = (SinglePartitionSpec **)
+ palloc0(nparts * sizeof(SinglePartitionSpec *));
+ for (i = 0; i < nparts; i++)
+ new_parts[i] = tmp_new_parts[lower_bounds[i]->index];
+
+ pfree(tmp_new_parts);
+ pfree(lower_bounds);
+ }
+
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(parent, true));
+
+ /* isSplitPartDefault flag: is split partition a DEFAULT partition? */
+ isSplitPartDefault = (defaultPartOid == splitPartOid);
+
+ if (isSplitPartDefault && default_index < 0)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("any partition in the list should be DEFAULT because split partition is DEFAULT")),
+ parser_errposition(pstate, ((SinglePartitionSpec *) linitial(partlist))->name->location));
+ }
+ else if (!isSplitPartDefault && (default_index >= 0) && OidIsValid(defaultPartOid))
+ {
+ SinglePartitionSpec *spsDef =
+ (SinglePartitionSpec *) list_nth(partlist, default_index);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition cannot be DEFAULT because DEFAULT partition already exists")),
+ parser_errposition(pstate, spsDef->name->location));
+ }
+
+ /* Indicator that partitioned table has (or will have) DEFAULT partition */
+ existsDefaultPart = OidIsValid(defaultPartOid) || (default_index >= 0);
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = new_parts[i];
+
+ if (isSplitPartDefault)
+ {
+ /*
+ * In case split partition is DEFAULT partition we can use any
+ * free ranges - as when creating a new partition.
+ */
+ check_new_partition_bound(sps->name->relname, parent, sps->bound,
+ pstate);
+ }
+ else
+ {
+ /*
+ * Checks that bound of current partition is inside bound of split
+ * partition. For range partitioning: checks that upper bound of
+ * previous partition is equal to lower bound of current
+ * partition. For list partitioning: checks that split partition
+ * contains all values of current partition.
+ */
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ bool first = (i == 0);
+ bool last = (i == (nparts - 1));
+
+ check_partition_bounds_for_split_range(parent, sps->name->relname, sps->bound,
+ splitPartOid, splitPartName,
+ first, last,
+ existsDefaultPart, pstate);
+ }
+ else
+ check_partition_bounds_for_split_list(parent, sps->name->relname,
+ sps->bound, splitPartOid, pstate);
+ }
+
+ /* Ranges of new partitions should not overlap. */
+ if (strategy == PARTITION_STRATEGY_RANGE && spsPrev)
+ check_two_partitions_bounds_range(parent, spsPrev->name, spsPrev->bound,
+ sps->name, sps->bound, existsDefaultPart, pstate);
+
+ spsPrev = sps;
+
+ /* Check: new partitions should have different names. */
+ for (j = i + 1; j < nparts; j++)
+ {
+ SinglePartitionSpec *sps2 = new_parts[j];
+
+ if (equal(sps->name, sps2->name))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("name \"%s\" already used", sps2->name->relname)),
+ parser_errposition(pstate, sps2->name->location));
+ }
+ }
+
+ if (strategy == PARTITION_STRATEGY_LIST)
+ {
+ /* Values of new partitions should not overlap. */
+ check_partitions_not_overlap_list(parent, new_parts, nparts,
+ pstate);
+
+ /*
+ * Need to check that all values of split partition contains in new
+ * partitions. Skip this check if DEFAULT partition exists.
+ */
+ if (!existsDefaultPart)
+ check_parent_values_in_new_partitions(parent, splitPartOid,
+ new_parts, nparts, pstate);
+ }
+
+ pfree(new_parts);
+}
+
/*
* calculate_partition_bound_for_merge
*
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index 0f7f40c50f6..150ff7abd5f 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -13066,3 +13066,21 @@ get_range_partbound_string(List *bound_datums)
return buf->data;
}
+
+/*
+ * get_list_partvalue_string
+ * A C string representation of one list partition value
+ */
+char *
+get_list_partvalue_string(Const *val)
+{
+ deparse_context context;
+ StringInfo buf = makeStringInfo();
+
+ memset(&context, 0, sizeof(deparse_context));
+ context.buf = buf;
+
+ get_const_expr(val, &context, -1);
+
+ return buf->data;
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index abb705d11d7..8602f791ca9 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -2345,6 +2345,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_SplitPartition, /* SPLIT PARTITION */
AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 23041654082..6f19f166a66 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -416,6 +416,7 @@ PG_KEYWORD("smallint", SMALLINT, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("snapshot", SNAPSHOT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("some", SOME, RESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("source", SOURCE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("split", SPLIT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("sql", SQL_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("stable", STABLE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("standalone", STANDALONE_P, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 0329d7bd848..9d2a26705f0 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,6 +143,11 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate);
extern void calculate_partition_bound_for_merge(Relation parent,
List *partNames,
List *partOids,
diff --git a/src/include/utils/ruleutils.h b/src/include/utils/ruleutils.h
index 161fb5ef02c..6d860806221 100644
--- a/src/include/utils/ruleutils.h
+++ b/src/include/utils/ruleutils.h
@@ -49,4 +49,6 @@ extern char *get_range_partbound_string(List *bound_datums);
extern char *pg_get_statisticsobjdef_string(Oid statextid);
+extern char *get_list_partvalue_string(Const *val);
+
#endif /* RULEUTILS_H */
diff --git a/src/test/isolation/expected/partition-split.out b/src/test/isolation/expected/partition-split.out
new file mode 100644
index 00000000000..5d9e8b0925f
--- /dev/null
+++ b/src/test/isolation/expected/partition-split.out
@@ -0,0 +1,190 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s1b s1splt s2b s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2brr s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2bs s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2b s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2brr s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2bs s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2b s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2brr s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2bs s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 8bcaa8a6254..0342eb39e40 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -104,6 +104,7 @@ test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
test: partition-merge
+test: partition-split
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-split.spec b/src/test/isolation/specs/partition-split.spec
new file mode 100644
index 00000000000..087239a4a19
--- /dev/null
+++ b/src/test/isolation/specs/partition-split.spec
@@ -0,0 +1,54 @@
+# Verify that SPLIT operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1splt { ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20)); }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s1 starts SPLIT PARTITION then s2 trying to insert row and
+# waits until s1 finished SPLIT operation.
+
+permutation s1b s1splt s2b s2i s1c s2c s2s
+permutation s1b s1splt s2brr s2i s1c s2c s2s
+permutation s1b s1splt s2bs s2i s1c s2c s2s
+
+permutation s1brr s1splt s2b s2i s1c s2c s2s
+permutation s1brr s1splt s2brr s2i s1c s2c s2s
+permutation s1brr s1splt s2bs s2i s1c s2c s2s
+
+permutation s1bs s1splt s2b s2i s1c s2c s2s
+permutation s1bs s1splt s2brr s2i s1c s2c s2s
+permutation s1bs s1splt s2bs s2i s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 69920757b21..265ef2a5470 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_SplitPartition:
+ strtype = "SPLIT PARTITION";
+ break;
case AT_MergePartitions:
strtype = "MERGE PARTITIONS";
break;
diff --git a/src/test/regress/expected/partition_split.out b/src/test/regress/expected/partition_split.out
new file mode 100644
index 00000000000..0a40f20554d
--- /dev/null
+++ b/src/test/regress/expected/partition_split.out
@@ -0,0 +1,1417 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_xxx" does not exist
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_jan2022" already exists
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: invalid bound specification for a range partition
+LINE 2: (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '202...
+ ^
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: empty range bound specified for partition "sales_mar2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+DETAIL: Specified lower bound ('03-01-2022') is greater than or equal to upper bound ('02-01-2022').
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+ERROR: list of new partitions should contains at least two items
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO...
+ ^
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb_mar_apr2022" already used
+LINE 3: PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03...
+ ^
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb2022" already used
+LINE 3: PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+LINE 4: ... sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-0...
+ ^
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_feb2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO...
+ ^
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO...
+ ^
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(4 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+ERROR: relation "sales_jan_feb2022" does not exist
+LINE 1: SELECT * FROM sales_jan_feb2022;
+ ^
+DROP TABLE sales_date CASCADE;
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 7 | Li | 175 | 03-08-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 11 | Trump | 380 | 04-06-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(11 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+-----------------------------+------------+----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx | | CREATE INDEX sales_others_sales_date_idx ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_feb2022 | sales_feb2022_sales_date_idx | | CREATE INDEX sales_feb2022_sales_date_idx ON partition_split_schema.sales_feb2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_mar2022 | sales_mar2022_sales_date_idx | | CREATE INDEX sales_mar2022_sales_date_idx ON partition_split_schema.sales_mar2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_apr2022 | sales_apr2022_sales_date_idx | | CREATE INDEX sales_apr2022_sales_date_idx ON partition_split_schema.sales_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+------------------------------+------------+-----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx1 | | CREATE INDEX sales_others_sales_date_idx1 ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211230) TO (2022...
+ ^
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+LINE 4: PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20...
+ ^
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211210) TO (2021...
+ ^
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211201) TO (2022...
+ ^
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+LINE 2: (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20...
+ ^
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_sales_amount_check"
+DETAIL: Failing row contains (1, 0, 03-11-2022).
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(-1) is not present in table "salesmans".
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(40) is not present in table "salesmans".
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+SELECT * FROM salesmans1_2;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans2_3;
+ salesman_id | salesman_name
+-------------+---------------
+ 2 | Ivanov
+(1 row)
+
+SELECT * FROM salesmans3_4;
+ salesman_id | salesman_name
+-------------+---------------
+ 3 | May
+(1 row)
+
+SELECT * FROM salesmans4_5;
+ salesman_id | salesman_name
+-------------+---------------
+ 4 | Ford
+(1 row)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+(2 rows)
+
+select * from salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+select * from salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok', 'Helsinki'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+ERROR: new partition "sales_east" would overlap with another (not split) partition "sales_nord"
+LINE 3: ... FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok', 'Helsinki'...
+ ^
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Lisbon', 'Kyiv'));
+ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+LINE 2: (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York',...
+ ^
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', NULL),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+LINE 2: ...s_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', NULL),
+ ^
+DROP TABLE sales_list;
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok', NULL);
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+ERROR: new partitions not have value NULL but split partition has
+-- ERROR: new partitions not have value 'Kyiv' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', NULL));
+ERROR: new partitions not have value 'Kyiv' but split partition has
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Helsinki', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Oslo | 1200 | 03-06-2022
+ 9 | May | Oslo | 1200 | 03-11-2022
+ 10 | Halder | Helsinki | 800 | 03-02-2022
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+(14 rows)
+
+SELECT * FROM sales_west;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+(4 rows)
+
+SELECT * FROM sales_east;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+(2 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Oslo | 1200 | 03-06-2022
+ 9 | May | Oslo | 1200 | 03-11-2022
+ 10 | Halder | Helsinki | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_central;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(4 rows)
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_central WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 026e7a77675..7cd4deda9bf 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_split partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_split.sql b/src/test/regress/sql/partition_split.sql
new file mode 100644
index 00000000000..8864f6ddaa1
--- /dev/null
+++ b/src/test/regress/sql/partition_split.sql
@@ -0,0 +1,833 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+
+DROP TABLE sales_date CASCADE;
+
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_others;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+
+SELECT * FROM salesmans1_2;
+SELECT * FROM salesmans2_3;
+SELECT * FROM salesmans3_4;
+SELECT * FROM salesmans4_5;
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+select * from salesmans01_10;
+select * from salesmans10_20;
+select * from salesmans20_30;
+select * from salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok', 'Helsinki'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Lisbon', 'Kyiv'));
+
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', NULL),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+DROP TABLE sales_list;
+
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok', NULL);
+
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+-- ERROR: new partitions not have value 'Kyiv' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', NULL));
+
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Helsinki', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_west;
+SELECT * FROM sales_east;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_central;
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_central WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index f383dd417ee..34ef3ee4e5a 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2675,6 +2675,7 @@ SpecialJoinInfo
SpinDelayStatus
SplitInterval
SplitLR
+SplitPartitionContext
SplitPageLayout
SplitPoint
SplitTextOutputData
--
2.39.3 (Apple Git-145)
[application/octet-stream] v30-0001-Implement-ALTER-TABLE-.-MERGE-PARTITIONS-.-comma.patch (112.8K, ../../CAPpHfduNYkMVuUSxZjD6u4tZG6aKdhgQcmhr-K9OQfeg56MNww@mail.gmail.com/3-v30-0001-Implement-ALTER-TABLE-.-MERGE-PARTITIONS-.-comma.patch)
download | inline diff:
From ec83a934dcafbcb9c414eb656b87c2840bd64afc Mon Sep 17 00:00:00 2001
From: Alexander Korotkov <[email protected]>
Date: Tue, 2 Apr 2024 23:24:32 +0300
Subject: [PATCH v30 1/2] Implement ALTER TABLE ... MERGE PARTITIONS ...
command
This new DDL command merges several partitions into the one partition of the
target table. The target partition is created using new
createPartitionTable() function with parent partition as the template.
This commit comprises quite naive implementation which works in single process
and holds the ACCESS EXCLUSIVE LOCK on the parent table during all the
operations including the tuple routing. This is why this new DDL command
can't be recommended for large partitioned tables under a high load. However,
this implementation come in handy in certain cases even as is.
Also, it could be used as a foundation for future implementations with lesser
locking and possibly parallel.
Discussion: https://postgr.es/m/c73a1746-0cd0-6bdd-6b23-3ae0b7c0c582%40postgrespro.ru
Author: Dmitry Koval
Reviewed-by: Matthias van de Meent, Laurenz Albe, Zhihong Yu, Justin Pryzby
Reviewed-by: Alvaro Herrera, Robert Haas, Stephane Tachoires
---
doc/src/sgml/ddl.sgml | 19 +
doc/src/sgml/ref/alter_table.sgml | 77 +-
src/backend/commands/tablecmds.c | 354 ++++++++-
src/backend/parser/gram.y | 22 +-
src/backend/parser/parse_utilcmd.c | 89 +++
src/backend/partitioning/partbounds.c | 207 +++++
src/include/nodes/parsenodes.h | 14 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 6 +
.../isolation/expected/partition-merge.out | 199 +++++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-merge.spec | 54 ++
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_merge.out | 732 ++++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_merge.sql | 430 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
17 files changed, 2189 insertions(+), 22 deletions(-)
create mode 100644 src/test/isolation/expected/partition-merge.out
create mode 100644 src/test/isolation/specs/partition-merge.spec
create mode 100644 src/test/regress/expected/partition_merge.out
create mode 100644 src/test/regress/sql/partition_merge.sql
diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index 6bc43ad10ca..f9f2778b3d7 100644
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -4379,6 +4379,25 @@ ALTER TABLE measurement_y2006m02 ADD UNIQUE (city_id, logdate);
ALTER INDEX measurement_city_id_logdate_key
ATTACH PARTITION measurement_y2006m02_city_id_logdate_key;
...
+</programlisting>
+ </para>
+
+ <para>
+ There is also an option for merging multiple table partitions into
+ a single partition using the
+ <link linkend="sql-altertable-merge-partitions"><command>ALTER TABLE ... MERGE PARTITIONS</command></link>.
+ This feature simplifies the management of partitioned tables by allowing
+ administrators to combine partitions that are no longer needed as
+ separate entities. It's important to note that this operation is not
+ supported for hash-partitioned tables and acquires an
+ <literal>ACCESS EXCLUSIVE</literal> lock, which could impact high-load
+ systems due to the lock's restrictive nature. For example, we can
+ merge three monthly partitions into one quarter partition:
+<programlisting>
+ALTER TABLE measurement
+ MERGE PARTITIONS (measurement_y2006m01,
+ measurement_y2006m02,
+ measurement_y2006m03) INTO measurement_y2006q1;
</programlisting>
</para>
</sect3>
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 6cdcd779ef8..e0a98bc5385 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,9 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
+ INTO <replaceable class="parameter">partition_name</replaceable>
<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>
@@ -1118,14 +1121,74 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-merge-partitions">
+ <term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
+
+ <listitem>
+ <para>
+ This form merges several partitions into the one partition of the target table.
+ Hash-partitioning is not supported. If DEFAULT partition is not in the
+ list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ For range-partitioned tables is necessary that the ranges
+ of the partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] can
+ be merged into one range without spaces and overlaps (otherwise an error
+ will be generated). The combined range will be the range for the partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For list-partitioned tables the values lists of all partitions
+ <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] are
+ combined and form a list of values of partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ If DEFAULT partition is in the list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ The partition <replaceable class="parameter">partition_name</replaceable>
+ will be the DEFAULT partition.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For range- and list-partitioned tables the ranges and lists of values
+ of the merged partitions can be any.
+ </para>
+ </listitem>
+ </itemizedlist>
+ The new partition <replaceable class="parameter">partition_name</replaceable>
+ can have the same name as one of the merged partitions. Only simple,
+ non-partitioned partitions can be merged.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
</variablelist>
</para>
<para>
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
- <literal>ATTACH PARTITION</literal>, and
- <literal>DETACH PARTITION</literal> can be combined into
+ <literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
+ and <literal>MERGE PARTITIONS</literal> can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1368,7 +1431,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<term><replaceable class="parameter">partition_name</replaceable></term>
<listitem>
<para>
- The name of the table to attach as a new partition or to detach from this table.
+ The name of the table to attach as a new partition or to detach from this table,
+ or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1784,6 +1848,13 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To merge several partitions into one partition of the target table:
+<programlisting>
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central)
+ INTO sales_all;
+</programlisting></para>
+
</refsect1>
<refsect1>
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 317b89f67c3..05e86de8ebc 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,8 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context);
/* ----------------------------------------------------------------
* DefineRelation
@@ -4738,6 +4740,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_MergePartitions:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5157,6 +5163,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_MergePartitions:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5554,6 +5565,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_MergePartitions:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecMergePartitions(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -6548,6 +6567,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_MergePartitions:
+ return "MERGE PARTITIONS";
case AT_AddIdentity:
return "ALTER COLUMN ... ADD IDENTITY";
case AT_SetIdentity:
@@ -19042,6 +19063,37 @@ QueuePartitionConstraintValidation(List **wqueue, Relation scanrel,
}
}
+/*
+ * attachPartitionTable: attach new partition to partitioned table
+ *
+ * wqueue: the ALTER TABLE work queue; can be NULL when not running as part
+ * of an ALTER TABLE sequence.
+ * rel: partitioned relation;
+ * attachrel: relation of attached partition;
+ * bound: bounds of attached relation.
+ */
+static void
+attachPartitionTable(List **wqueue, Relation rel, Relation attachrel, PartitionBoundSpec *bound)
+{
+ /* OK to create inheritance. Rest of the checks performed there */
+ CreateInheritance(attachrel, rel, true);
+
+ /* Update the pg_class entry. */
+ StorePartitionBound(attachrel, rel, bound);
+
+ /* Ensure there exists a correct set of indexes in the partition. */
+ AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
+
+ /* and triggers */
+ CloneRowTriggersToPartition(rel, attachrel);
+
+ /*
+ * Clone foreign key constraints. Callee is responsible for setting up
+ * for phase 3 constraint verification.
+ */
+ CloneForeignKeyConstraints(wqueue, rel, attachrel);
+}
+
/*
* ALTER TABLE <name> ATTACH PARTITION <partition-name> FOR VALUES
*
@@ -19244,23 +19296,8 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd,
check_new_partition_bound(RelationGetRelationName(attachrel), rel,
cmd->bound, pstate);
- /* OK to create inheritance. Rest of the checks performed there */
- CreateInheritance(attachrel, rel, true);
-
- /* Update the pg_class entry. */
- StorePartitionBound(attachrel, rel, cmd->bound);
-
- /* Ensure there exists a correct set of indexes in the partition. */
- AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
-
- /* and triggers */
- CloneRowTriggersToPartition(rel, attachrel);
-
- /*
- * Clone foreign key constraints. Callee is responsible for setting up
- * for phase 3 constraint verification.
- */
- CloneForeignKeyConstraints(wqueue, rel, attachrel);
+ /* Attach a new partition to the partitioned table. */
+ attachPartitionTable(wqueue, rel, attachrel, cmd->bound);
/*
* Generate partition constraint from the partition bound specification.
@@ -20814,3 +20851,286 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+
+/*
+ * createPartitionTable: create table for new partition with given name
+ * (newPartName) like table (modelRelName)
+ *
+ * Emulates command: CREATE TABLE <newPartName> (LIKE <modelRelName>
+ * INCLUDING ALL EXCLUDING INDEXES EXCLUDING IDENTITY)
+ */
+static void
+createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
+ AlterTableUtilityContext *context)
+{
+ CreateStmt *createStmt;
+ TableLikeClause *tlc;
+ PlannedStmt *wrapper;
+
+ createStmt = makeNode(CreateStmt);
+ createStmt->relation = newPartName;
+ createStmt->tableElts = NIL;
+ createStmt->inhRelations = NIL;
+ createStmt->constraints = NIL;
+ createStmt->options = NIL;
+ createStmt->oncommit = ONCOMMIT_NOOP;
+ createStmt->tablespacename = NULL;
+ createStmt->if_not_exists = false;
+
+ tlc = makeNode(TableLikeClause);
+ tlc->relation = modelRelName;
+
+ /*
+ * Indexes will be inherited on "attach new partitions" stage, after data
+ * moving.
+ */
+ tlc->options = CREATE_TABLE_LIKE_ALL & ~(CREATE_TABLE_LIKE_INDEXES | CREATE_TABLE_LIKE_IDENTITY);
+ tlc->relationOid = InvalidOid;
+ createStmt->tableElts = lappend(createStmt->tableElts, tlc);
+
+ /* Need to make a wrapper PlannedStmt. */
+ wrapper = makeNode(PlannedStmt);
+ wrapper->commandType = CMD_UTILITY;
+ wrapper->canSetTag = false;
+ wrapper->utilityStmt = (Node *) createStmt;
+ wrapper->stmt_location = context->pstmt->stmt_location;
+ wrapper->stmt_len = context->pstmt->stmt_len;
+
+ ProcessUtility(wrapper,
+ context->queryString,
+ false,
+ PROCESS_UTILITY_SUBCOMMAND,
+ NULL,
+ NULL,
+ None_Receiver,
+ NULL);
+}
+
+/*
+ * moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
+ * of the partitioned table (rel) and move rows into the new partition
+ * (newPartRel).
+ */
+static void
+moveMergedTablesRows(Relation rel, List *mergingPartitionsList,
+ Relation newPartRel)
+{
+ CommandId mycid;
+
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ ListCell *listptr;
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot;
+
+ mycid = GetCurrentCommandId(true);
+
+ /* Prepare a BulkInsertState for table_tuple_insert. */
+ bistate = GetBulkInsertState();
+
+ /* Create necessary tuple slot. */
+ dstslot = MakeSingleTupleTableSlot(RelationGetDescr(newPartRel),
+ table_slot_callbacks(newPartRel));
+ ExecStoreAllNullTuple(dstslot);
+
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+ TupleTableSlot *srcslot;
+ TupleConversionMap *tuple_map;
+ TableScanDesc scan;
+ Snapshot snapshot;
+
+ /* Create tuple slot for new partition. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(mergingPartition),
+ table_slot_callbacks(mergingPartition));
+
+ /*
+ * Map computing for moving attributes of merged partition to new
+ * partition.
+ */
+ tuple_map = convert_tuples_by_name(RelationGetDescr(mergingPartition),
+ RelationGetDescr(newPartRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(mergingPartition, snapshot, 0, NULL);
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ TupleTableSlot *insertslot;
+ bool insert_indexes;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /*
+ * Write the tuple out to the new relation. We ignore the
+ * 'insert_indexes' flag since newPartRel has no indexes anyway.
+ */
+ (void) table_tuple_insert(newPartRel, insertslot, mycid,
+ ti_options, bistate, &insert_indexes);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+ }
+
+ ExecDropSingleTupleTableSlot(dstslot);
+ FreeBulkInsertState(bistate);
+
+ table_finish_bulk_insert(newPartRel, ti_options);
+}
+
+/*
+ * ALTER TABLE <name> MERGE PARTITIONS <partition-list> INTO <partition-name>
+ */
+static void
+ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation newPartRel;
+ ListCell *listptr;
+ List *mergingPartitionsList = NIL;
+ Oid defaultPartOid;
+ char tmpRelName[NAMEDATALEN];
+ RangeVar *mergePartName = cmd->name;
+ bool isSameName = false;
+
+ /*
+ * Lock all merged partitions, check them and create list with partitions
+ * contexts.
+ */
+ foreach(listptr, cmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+ Relation mergingPartition;
+
+ /*
+ * We are going to detach and remove this partition: need to use
+ * exclusive lock for prevent DML-queries to the partition.
+ */
+ mergingPartition = table_openrv(name, AccessExclusiveLock);
+
+ if (mergingPartition->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot merge non-table partition \"%s\"",
+ RelationGetRelationName(mergingPartition))));
+
+ /*
+ * Checking that two partitions have the same name was before, in
+ * function transformPartitionCmdForMerge().
+ */
+ if (equal(name, cmd->name))
+ /* One new partition can have the same name as merged partition. */
+ isSameName = true;
+
+ /* Store a next merging partition into the list. */
+ mergingPartitionsList = lappend(mergingPartitionsList,
+ mergingPartition);
+ }
+
+ /* Detach all merged partitions. */
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(mergingPartition, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, mergingPartition, false, defaultPartOid);
+ }
+
+ /* Create table for new partition, use partitioned table as model. */
+ if (isSameName)
+ {
+ /* Create partition table with generated temparary name. */
+ sprintf(tmpRelName, "merge-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ mergePartName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ tmpRelName, -1);
+ }
+ createPartitionTable(mergePartName,
+ makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1),
+ context);
+
+ /*
+ * Open the new partition and acquire exclusive lock on it. This will
+ * stop all the operations with partitioned table. This might seem
+ * excessive, but this is the way we make sure nobody is planning queries
+ * involving merging partitions.
+ */
+ newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+
+ /* Copy data from merged partitions to new partition. */
+ moveMergedTablesRows(rel, mergingPartitionsList, newPartRel);
+
+ /*
+ * Attach a new partition to the partitioned table. wqueue = NULL:
+ * verification for each cloned constraint is not need.
+ */
+ attachPartitionTable(NULL, rel, newPartRel, cmd->bound);
+
+ /* Unlock and drop merged partitions. */
+ foreach(listptr, mergingPartitionsList)
+ {
+ ObjectAddress object;
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Get relation id before table_close() call. */
+ object.objectId = RelationGetRelid(mergingPartition);
+ object.classId = RelationRelationId;
+ object.objectSubId = 0;
+
+ /* Keep the lock until commit. */
+ table_close(mergingPartition, NoLock);
+
+ performDeletion(&object, DROP_RESTRICT, 0);
+ }
+ list_free(mergingPartitionsList);
+
+ /* Rename new partition if it is needed. */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the new partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ RenameRelationInternal(RelationGetRelid(newPartRel),
+ cmd->name->relname, false, false);
+ }
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+}
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index f1af6147c37..f2b0d963d18 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -757,7 +757,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
ORDER ORDINALITY OTHERS OUT_P OUTER_P
OVER OVERLAPS OVERLAY OVERRIDING OWNED OWNER
- PARALLEL PARAMETER PARSER PARTIAL PARTITION PASSING PASSWORD
+ PARALLEL PARAMETER PARSER PARTIAL PARTITION PARTITIONS PASSING PASSWORD
PERIOD PLACING PLANS POLICY
POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
PRIOR PRIVILEGES PROCEDURAL PROCEDURE PROCEDURES PROGRAM PUBLICATION
@@ -2312,6 +2312,7 @@ partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = $4;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -2326,6 +2327,7 @@ partition_cmd:
n->subtype = AT_DetachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = $4;
n->def = (Node *) cmd;
@@ -2339,6 +2341,21 @@ partition_cmd:
n->subtype = AT_DetachPartitionFinalize;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
+ /* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
+ | MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_MergePartitions;
+ cmd->name = $7;
+ cmd->bound = NULL;
+ cmd->partlist = $4;
cmd->concurrent = false;
n->def = (Node *) cmd;
$$ = (Node *) n;
@@ -2355,6 +2372,7 @@ index_partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -17529,6 +17547,7 @@ unreserved_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
@@ -18149,6 +18168,7 @@ bare_label_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PERIOD
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index c7efd8d8cee..48a23c7ca42 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -58,6 +58,8 @@
#include "parser/parse_type.h"
#include "parser/parse_utilcmd.h"
#include "parser/parser.h"
+#include "partitioning/partdesc.h"
+#include "partitioning/partbounds.h"
#include "rewrite/rewriteManip.h"
#include "utils/acl.h"
#include "utils/builtins.h"
@@ -3413,6 +3415,80 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForMerge
+ * Analyze the ALTER TABLLE ... MERGE PARTITIONS command
+ *
+ * Does simple checks for merged partitions. Calculates bound of result
+ * partition.
+ */
+static void
+transformPartitionCmdForMerge(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Oid defaultPartOid;
+ Oid partOid;
+ Relation parent = cxt->rel;
+ PartitionKey key;
+ char strategy;
+ ListCell *listptr,
+ *listptr2;
+ bool isDefaultPart = false;
+ List *partOids = NIL;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ if (strategy == PARTITION_STRATEGY_HASH)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be merged")));
+
+ /* Is current partition a DEFAULT partition? */
+ defaultPartOid = get_default_oid_from_partdesc(
+ RelationGetPartitionDesc(parent, true));
+
+ foreach(listptr, partcmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+
+ /* Partitions in the list should have different names. */
+ for_each_cell(listptr2, partcmd->partlist, lnext(partcmd->partlist, listptr))
+ {
+ RangeVar *name2 = (RangeVar *) lfirst(listptr2);
+
+ if (equal(name, name2))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("partition with name \"%s\" already used", name->relname)),
+ parser_errposition(cxt->pstate, name2->location));
+ }
+
+ /* Search DEFAULT partition in the list. */
+ partOid = RangeVarGetRelid(name, NoLock, false);
+ if (partOid == defaultPartOid)
+ isDefaultPart = true;
+ partOids = lappend_oid(partOids, partOid);
+ }
+
+ /* Allocate bound of result partition. */
+ Assert(partcmd->bound == NULL);
+ partcmd->bound = makeNode(PartitionBoundSpec);
+
+ /* Fill partition bound. */
+ partcmd->bound->strategy = strategy;
+ partcmd->bound->location = -1;
+ partcmd->bound->is_default = isDefaultPart;
+ if (!isDefaultPart)
+ calculate_partition_bound_for_merge(parent, partcmd->partlist,
+ partOids, partcmd->bound,
+ cxt->pstate);
+}
+
/*
* transformAlterTableStmt -
* parse analysis for ALTER TABLE
@@ -3683,6 +3759,19 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_MergePartitions:
+ {
+ PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
+
+ if (list_length(partcmd->partlist) < 2)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("list of new partitions should contains at least two items")));
+ transformPartitionCmdForMerge(&cxt, partcmd);
+ newcmds = lappend(newcmds, cmd);
+ break;
+ }
+
default:
/*
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index c28639d2e3f..9ed80d721ed 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -4977,3 +4977,210 @@ satisfies_hash_partition(PG_FUNCTION_ARGS)
PG_RETURN_BOOL(rowHash % modulus == remainder);
}
+
+/*
+ * check_two_partitions_bounds_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * This is a helper function for check_partitions_for_split() and
+ * calculate_partition_bound_for_merge().
+ * This function compares upper bound of first_bound and lower bound of
+ * second_bound. These bounds should be equals except case
+ * "defaultPart == true" (this means that one of split partitions is DEFAULT).
+ * In this case upper bound of first_bound can be less than lower bound of
+ * second_bound because space between of these bounds will be included in
+ * DEFAULT partition.
+ *
+ * parent: partitioned table
+ * first_name: name of first partition
+ * first_bound: bound of first partition
+ * second_name: name of second partition
+ * second_bound: bound of second partition
+ * defaultPart: true if one of split partitions is DEFAULT
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_two_partitions_bounds_range(Relation parent,
+ RangeVar *first_name,
+ PartitionBoundSpec *first_bound,
+ RangeVar *second_name,
+ PartitionBoundSpec *second_bound,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *first_upper;
+ PartitionRangeBound *second_lower;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+
+ first_upper = make_one_partition_rbound(key, -1, first_bound->upperdatums, false);
+ second_lower = make_one_partition_rbound(key, -1, second_bound->lowerdatums, true);
+
+ /*
+ * lower1=false (the second to last argument) for correct comparison lower
+ * and upper bounds.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ second_lower->datums, second_lower->kind,
+ false, first_upper);
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ {
+ PartitionRangeDatum *datum = linitial(second_bound->lowerdatums);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("lower bound of partition \"%s\" conflicts with upper bound of previous partition \"%s\"",
+ second_name->relname, first_name->relname),
+ parser_errposition(pstate, datum->location)));
+ }
+}
+
+/*
+ * get_partition_bound_spec
+ *
+ * Returns description of partition with Oid "partOid" and name "name".
+ */
+static PartitionBoundSpec *
+get_partition_bound_spec(Oid partOid, RangeVar *name)
+{
+ HeapTuple tuple;
+ Datum datum;
+ bool isnull;
+ PartitionBoundSpec *boundspec = NULL;
+
+ /* Try fetching the tuple from the catcache, for speed. */
+ tuple = SearchSysCache1(RELOID, partOid);
+ if (!HeapTupleIsValid(tuple))
+ elog(ERROR, "cache lookup failed for relation \"%s\"",
+ name->relname);
+
+ datum = SysCacheGetAttr(RELOID, tuple,
+ Anum_pg_class_relpartbound,
+ &isnull);
+ if (isnull)
+ elog(ERROR, "partition bound for relation \"%s\" is null",
+ name->relname);
+
+ boundspec = stringToNode(TextDatumGetCString(datum));
+
+ if (!IsA(boundspec, PartitionBoundSpec))
+ elog(ERROR, "expected PartitionBoundSpec for relation \"%s\"",
+ name->relname);
+
+ ReleaseSysCache(tuple);
+ return boundspec;
+}
+
+/*
+ * calculate_partition_bound_for_merge
+ *
+ * Calculates the bound of merged partition "spec" by using the bounds of
+ * partitions to be merged.
+ *
+ * parent: partitioned table
+ * partNames: names of partitions to be merged
+ * partOids: Oids of partitions to be merged
+ * spec (out): bounds specification of the merged partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionBoundSpec *bound;
+
+ Assert(!spec->is_default);
+
+ switch (key->strategy)
+ {
+ case PARTITION_STRATEGY_RANGE:
+ {
+ int i;
+ PartitionRangeBound **lower_bounds;
+ int nparts = list_length(partOids);
+ List *bounds = NIL;
+
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /*
+ * Create array of lower bounds and list of
+ * PartitionBoundSpec.
+ */
+ for (i = 0; i < nparts; i++)
+ {
+ bound = get_partition_bound_spec(list_nth_oid(partOids, i),
+ (RangeVar *) list_nth(partNames, i));
+
+ lower_bounds[i] = make_one_partition_rbound(key, i, bound->lowerdatums, true);
+ bounds = lappend(bounds, bound);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Ranges of partitions should not overlap. */
+ for (i = 1; i < nparts; i++)
+ {
+ int index = lower_bounds[i]->index;
+ int prev_index = lower_bounds[i - 1]->index;
+
+ check_two_partitions_bounds_range(parent,
+ (RangeVar *) list_nth(partNames, prev_index),
+ (PartitionBoundSpec *) list_nth(bounds, prev_index),
+ (RangeVar *) list_nth(partNames, index),
+ (PartitionBoundSpec *) list_nth(bounds, index),
+ false, pstate);
+ }
+
+ /*
+ * Lower bound of first partition is a lower bound of merged
+ * partition.
+ */
+ spec->lowerdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[0]->index))->lowerdatums;
+
+ /*
+ * Upper bound of last partition is a upper bound of merged
+ * partition.
+ */
+ spec->upperdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[nparts - 1]->index))->upperdatums;
+
+ pfree(lower_bounds);
+ list_free(bounds);
+ break;
+ }
+
+ case PARTITION_STRATEGY_LIST:
+ {
+ ListCell *listptr,
+ *listptr2;
+
+ /* Consolidate bounds for all partitions in the list. */
+ forboth(listptr, partOids, listptr2, partNames)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr2);
+ Oid curOid = lfirst_oid(listptr);
+
+ bound = get_partition_bound_spec(curOid, name);
+ spec->listdatums = list_concat(spec->listdatums, bound->listdatums);
+ }
+ break;
+ }
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ }
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index a690ebc6e51..abb705d11d7 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -934,6 +934,17 @@ typedef struct PartitionRangeDatum
ParseLoc location; /* token location, or -1 if unknown */
} PartitionRangeDatum;
+/*
+ * PartitionDesc - info about single partition for ALTER TABLE SPLIT PARTITION command
+ */
+typedef struct SinglePartitionSpec
+{
+ NodeTag type;
+
+ RangeVar *name; /* name of partition */
+ PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+} SinglePartitionSpec;
+
/*
* PartitionCmd - info for ALTER TABLE/INDEX ATTACH/DETACH PARTITION commands
*/
@@ -942,6 +953,8 @@ typedef struct PartitionCmd
NodeTag type;
RangeVar *name; /* name of partition to attach/detach */
PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+ List *partlist; /* list of partitions, for SPLIT PARTITION
+ * command */
bool concurrent;
} PartitionCmd;
@@ -2332,6 +2345,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
AT_DropIdentity, /* DROP IDENTITY */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 6c959e85d54..23041654082 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -333,6 +333,7 @@ PG_KEYWORD("parameter", PARAMETER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("parser", PARSER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partial", PARTIAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partition", PARTITION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("partitions", PARTITIONS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("passing", PASSING, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("password", PASSWORD, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("period", PERIOD, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 3d9cc1031f7..0329d7bd848 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,4 +143,10 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate);
+
#endif /* PARTBOUNDS_H */
diff --git a/src/test/isolation/expected/partition-merge.out b/src/test/isolation/expected/partition-merge.out
new file mode 100644
index 00000000000..98446aaab5a
--- /dev/null
+++ b/src/test/isolation/expected/partition-merge.out
@@ -0,0 +1,199 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 188fc04f85e..8bcaa8a6254 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -103,6 +103,7 @@ test: partition-key-update-1
test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
+test: partition-merge
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-merge.spec b/src/test/isolation/specs/partition-merge.spec
new file mode 100644
index 00000000000..ec48732c583
--- /dev/null
+++ b/src/test/isolation/specs/partition-merge.spec
@@ -0,0 +1,54 @@
+# Verify that MERGE operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1merg { ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20; }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2u { UPDATE tpart SET t = 'text01modif' where i = 1; }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s2 inserts row into table. s1 starts MERGE PARTITIONS then
+# s2 trying to update inserted row and waits until s1 finished
+# MERGE operation.
+
+permutation s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 48563b2cf01..69920757b21 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_MergePartitions:
+ strtype = "MERGE PARTITIONS";
+ break;
case AT_AddIdentity:
strtype = "ADD IDENTITY";
break;
diff --git a/src/test/regress/expected/partition_merge.out b/src/test/regress/expected/partition_merge.out
new file mode 100644
index 00000000000..2ba0ec47d97
--- /dev/null
+++ b/src/test/regress/expected/partition_merge.out
@@ -0,0 +1,732 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+ERROR: partition with name "sales_feb2022" already used
+LINE 1: ...e MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2...
+ ^
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+ERROR: cannot merge non-table partition "sales_apr2022"
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_jan2022"
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+ERROR: lower bound of partition "sales_jan2022" conflicts with upper bound of previous partition "sales_dec2021"
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | p | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_dec2021 | r | f | FOR VALUES FROM ('12-01-2021') TO ('12-31-2021')
+ sales_jan_feb_mar2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+ pg_get_partkeydef
+--------------------
+ RANGE (sales_date)
+(1 row)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_mar2022 | r | f | FOR VALUES FROM ('03-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_feb_mar_apr2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('05-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+-------------------------+-----------------------+--------------------------------------+------------+-----------------------------------------------------------------------------------------------------------------------------
+ partitions_merge_schema | sales_feb_mar_apr2022 | sales_feb_mar_apr2022_sales_date_idx | | CREATE INDEX sales_feb_mar_apr2022_sales_date_idx ON partitions_merge_schema.sales_feb_mar_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb_mar_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(10 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+-- Use indexscan for test indexes
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(10 rows)
+
+RESET enable_seqscan;
+DROP TABLE sales_range;
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+select * from sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(7 rows)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+(2 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(2 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(6 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+DROP TABLE sales_date;
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+select * from salesmans;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(6 rows)
+
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(5 rows)
+
+DROP TABLE salesmans;
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr_all;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+ERROR: partition bound for relation "sales_external" is null
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+ERROR: partition bound for relation "sales_external2" is null
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Oslo', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+------------------------------------------------------
+ sales_central | r | f | FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv')
+ sales_east | r | f | FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok')
+ sales_nord | r | f | FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki')
+ sales_west | r | f | FOR VALUES IN ('Lisbon', 'New York', 'Madrid')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+--------------+---------+------------------+--------------------------------------------------------------------------------------------------------------
+ sales_all | r | f | FOR VALUES IN ('Lisbon', 'New York', 'Madrid', 'Bejing', 'Delhi', 'Vladivostok', 'Warsaw', 'Berlin', 'Kyiv')
+ sales_nord | r | f | FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Helsinki | 1200 | 03-06-2022
+ 9 | May | Helsinki | 1200 | 03-11-2022
+ 10 | Halder | Oslo | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Helsinki | 1200 | 03-06-2022
+ 9 | May | Helsinki | 1200 | 03-11-2022
+ 10 | Halder | Oslo | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_all;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(10 rows)
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_seqscan = OFF;
+SELECT * FROM sales_all WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+(1 row)
+
+RESET enable_seqscan;
+DROP TABLE sales_list;
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 5ac6e871f54..026e7a77675 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_merge.sql b/src/test/regress/sql/partition_merge.sql
new file mode 100644
index 00000000000..bb461e6623a
--- /dev/null
+++ b/src/test/regress/sql/partition_merge.sql
@@ -0,0 +1,430 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb_mar_apr2022;
+SELECT * FROM sales_others;
+
+-- Use indexscan for test indexes
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+
+RESET enable_seqscan;
+
+DROP TABLE sales_range;
+
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+
+select * from sales_others;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+DROP TABLE sales_date;
+
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+select * from salesmans;
+select * from salesmans01_10;
+select * from salesmans10_40;
+
+DROP TABLE salesmans;
+
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr_all;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+
+
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Oslo', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_all;
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_all WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+RESET enable_seqscan;
+
+DROP TABLE sales_list;
+
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index 8d08386d65c..f383dd417ee 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2611,6 +2611,7 @@ SimpleStats
SimpleStringList
SimpleStringListCell
SingleBoundSortItem
+SinglePartitionSpec
Size
SkipPages
SlabBlock
--
2.39.3 (Apple Git-145)
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Add SPLIT PARTITION/MERGE PARTITIONS commands
@ 2024-04-05 13:00 Dmitry Koval <[email protected]>
parent: Alexander Korotkov <[email protected]>
0 siblings, 0 replies; 9+ messages in thread
From: Dmitry Koval @ 2024-04-05 13:00 UTC (permalink / raw)
To: Alexander Korotkov <[email protected]>; +Cc: [email protected]
Hi!
> I've revised the patchset.
Thanks for the corrections (especially ddl.sgml).
Could you also look at a small optimization for the MERGE PARTITIONS
command (in a separate file
v31-0003-Additional-patch-for-ALTER-TABLE-.-MERGE-PARTITI.patch, I wrote
about it in an email 2024-03-31 00:56:50)?
Files v31-0001-*.patch, v31-0002-*.patch are the same as
v30-0001-*.patch, v30-0002-*.patch (after rebasing because patch stopped
applying due to changes in upstream).
--
With best regards,
Dmitry Koval
Postgres Professional: http://postgrespro.com
From 88ba95c1cbdc4983f27985bd440d71970e69688c Mon Sep 17 00:00:00 2001
From: Alexander Korotkov <[email protected]>
Date: Tue, 2 Apr 2024 23:24:32 +0300
Subject: [PATCH v31 1/3] Implement ALTER TABLE ... MERGE PARTITIONS ...
command
This new DDL command merges several partitions into the one partition of the
target table. The target partition is created using new
createPartitionTable() function with parent partition as the template.
This commit comprises quite naive implementation which works in single process
and holds the ACCESS EXCLUSIVE LOCK on the parent table during all the
operations including the tuple routing. This is why this new DDL command
can't be recommended for large partitioned tables under a high load. However,
this implementation come in handy in certain cases even as is.
Also, it could be used as a foundation for future implementations with lesser
locking and possibly parallel.
Discussion: https://postgr.es/m/c73a1746-0cd0-6bdd-6b23-3ae0b7c0c582%40postgrespro.ru
Author: Dmitry Koval
Reviewed-by: Matthias van de Meent, Laurenz Albe, Zhihong Yu, Justin Pryzby
Reviewed-by: Alvaro Herrera, Robert Haas, Stephane Tachoires
---
doc/src/sgml/ddl.sgml | 19 +
doc/src/sgml/ref/alter_table.sgml | 77 +-
src/backend/commands/tablecmds.c | 354 ++++++++-
src/backend/parser/gram.y | 22 +-
src/backend/parser/parse_utilcmd.c | 89 +++
src/backend/partitioning/partbounds.c | 207 +++++
src/include/nodes/parsenodes.h | 14 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 6 +
.../isolation/expected/partition-merge.out | 199 +++++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-merge.spec | 54 ++
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_merge.out | 732 ++++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_merge.sql | 430 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
17 files changed, 2189 insertions(+), 22 deletions(-)
create mode 100644 src/test/isolation/expected/partition-merge.out
create mode 100644 src/test/isolation/specs/partition-merge.spec
create mode 100644 src/test/regress/expected/partition_merge.out
create mode 100644 src/test/regress/sql/partition_merge.sql
diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index 6bc43ad10c..f9f2778b3d 100644
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -4379,6 +4379,25 @@ ALTER TABLE measurement_y2006m02 ADD UNIQUE (city_id, logdate);
ALTER INDEX measurement_city_id_logdate_key
ATTACH PARTITION measurement_y2006m02_city_id_logdate_key;
...
+</programlisting>
+ </para>
+
+ <para>
+ There is also an option for merging multiple table partitions into
+ a single partition using the
+ <link linkend="sql-altertable-merge-partitions"><command>ALTER TABLE ... MERGE PARTITIONS</command></link>.
+ This feature simplifies the management of partitioned tables by allowing
+ administrators to combine partitions that are no longer needed as
+ separate entities. It's important to note that this operation is not
+ supported for hash-partitioned tables and acquires an
+ <literal>ACCESS EXCLUSIVE</literal> lock, which could impact high-load
+ systems due to the lock's restrictive nature. For example, we can
+ merge three monthly partitions into one quarter partition:
+<programlisting>
+ALTER TABLE measurement
+ MERGE PARTITIONS (measurement_y2006m01,
+ measurement_y2006m02,
+ measurement_y2006m03) INTO measurement_y2006q1;
</programlisting>
</para>
</sect3>
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 6cdcd779ef..e0a98bc538 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,9 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
+ INTO <replaceable class="parameter">partition_name</replaceable>
<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>
@@ -1118,14 +1121,74 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-merge-partitions">
+ <term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
+
+ <listitem>
+ <para>
+ This form merges several partitions into the one partition of the target table.
+ Hash-partitioning is not supported. If DEFAULT partition is not in the
+ list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ For range-partitioned tables is necessary that the ranges
+ of the partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] can
+ be merged into one range without spaces and overlaps (otherwise an error
+ will be generated). The combined range will be the range for the partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For list-partitioned tables the values lists of all partitions
+ <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] are
+ combined and form a list of values of partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ If DEFAULT partition is in the list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ The partition <replaceable class="parameter">partition_name</replaceable>
+ will be the DEFAULT partition.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For range- and list-partitioned tables the ranges and lists of values
+ of the merged partitions can be any.
+ </para>
+ </listitem>
+ </itemizedlist>
+ The new partition <replaceable class="parameter">partition_name</replaceable>
+ can have the same name as one of the merged partitions. Only simple,
+ non-partitioned partitions can be merged.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
</variablelist>
</para>
<para>
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
- <literal>ATTACH PARTITION</literal>, and
- <literal>DETACH PARTITION</literal> can be combined into
+ <literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
+ and <literal>MERGE PARTITIONS</literal> can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1368,7 +1431,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<term><replaceable class="parameter">partition_name</replaceable></term>
<listitem>
<para>
- The name of the table to attach as a new partition or to detach from this table.
+ The name of the table to attach as a new partition or to detach from this table,
+ or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1784,6 +1848,13 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To merge several partitions into one partition of the target table:
+<programlisting>
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central)
+ INTO sales_all;
+</programlisting></para>
+
</refsect1>
<refsect1>
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 317b89f67c..05e86de8eb 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,8 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context);
/* ----------------------------------------------------------------
* DefineRelation
@@ -4738,6 +4740,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_MergePartitions:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5157,6 +5163,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_MergePartitions:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5554,6 +5565,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_MergePartitions:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecMergePartitions(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -6548,6 +6567,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_MergePartitions:
+ return "MERGE PARTITIONS";
case AT_AddIdentity:
return "ALTER COLUMN ... ADD IDENTITY";
case AT_SetIdentity:
@@ -19042,6 +19063,37 @@ QueuePartitionConstraintValidation(List **wqueue, Relation scanrel,
}
}
+/*
+ * attachPartitionTable: attach new partition to partitioned table
+ *
+ * wqueue: the ALTER TABLE work queue; can be NULL when not running as part
+ * of an ALTER TABLE sequence.
+ * rel: partitioned relation;
+ * attachrel: relation of attached partition;
+ * bound: bounds of attached relation.
+ */
+static void
+attachPartitionTable(List **wqueue, Relation rel, Relation attachrel, PartitionBoundSpec *bound)
+{
+ /* OK to create inheritance. Rest of the checks performed there */
+ CreateInheritance(attachrel, rel, true);
+
+ /* Update the pg_class entry. */
+ StorePartitionBound(attachrel, rel, bound);
+
+ /* Ensure there exists a correct set of indexes in the partition. */
+ AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
+
+ /* and triggers */
+ CloneRowTriggersToPartition(rel, attachrel);
+
+ /*
+ * Clone foreign key constraints. Callee is responsible for setting up
+ * for phase 3 constraint verification.
+ */
+ CloneForeignKeyConstraints(wqueue, rel, attachrel);
+}
+
/*
* ALTER TABLE <name> ATTACH PARTITION <partition-name> FOR VALUES
*
@@ -19244,23 +19296,8 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd,
check_new_partition_bound(RelationGetRelationName(attachrel), rel,
cmd->bound, pstate);
- /* OK to create inheritance. Rest of the checks performed there */
- CreateInheritance(attachrel, rel, true);
-
- /* Update the pg_class entry. */
- StorePartitionBound(attachrel, rel, cmd->bound);
-
- /* Ensure there exists a correct set of indexes in the partition. */
- AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
-
- /* and triggers */
- CloneRowTriggersToPartition(rel, attachrel);
-
- /*
- * Clone foreign key constraints. Callee is responsible for setting up
- * for phase 3 constraint verification.
- */
- CloneForeignKeyConstraints(wqueue, rel, attachrel);
+ /* Attach a new partition to the partitioned table. */
+ attachPartitionTable(wqueue, rel, attachrel, cmd->bound);
/*
* Generate partition constraint from the partition bound specification.
@@ -20814,3 +20851,286 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+
+/*
+ * createPartitionTable: create table for new partition with given name
+ * (newPartName) like table (modelRelName)
+ *
+ * Emulates command: CREATE TABLE <newPartName> (LIKE <modelRelName>
+ * INCLUDING ALL EXCLUDING INDEXES EXCLUDING IDENTITY)
+ */
+static void
+createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
+ AlterTableUtilityContext *context)
+{
+ CreateStmt *createStmt;
+ TableLikeClause *tlc;
+ PlannedStmt *wrapper;
+
+ createStmt = makeNode(CreateStmt);
+ createStmt->relation = newPartName;
+ createStmt->tableElts = NIL;
+ createStmt->inhRelations = NIL;
+ createStmt->constraints = NIL;
+ createStmt->options = NIL;
+ createStmt->oncommit = ONCOMMIT_NOOP;
+ createStmt->tablespacename = NULL;
+ createStmt->if_not_exists = false;
+
+ tlc = makeNode(TableLikeClause);
+ tlc->relation = modelRelName;
+
+ /*
+ * Indexes will be inherited on "attach new partitions" stage, after data
+ * moving.
+ */
+ tlc->options = CREATE_TABLE_LIKE_ALL & ~(CREATE_TABLE_LIKE_INDEXES | CREATE_TABLE_LIKE_IDENTITY);
+ tlc->relationOid = InvalidOid;
+ createStmt->tableElts = lappend(createStmt->tableElts, tlc);
+
+ /* Need to make a wrapper PlannedStmt. */
+ wrapper = makeNode(PlannedStmt);
+ wrapper->commandType = CMD_UTILITY;
+ wrapper->canSetTag = false;
+ wrapper->utilityStmt = (Node *) createStmt;
+ wrapper->stmt_location = context->pstmt->stmt_location;
+ wrapper->stmt_len = context->pstmt->stmt_len;
+
+ ProcessUtility(wrapper,
+ context->queryString,
+ false,
+ PROCESS_UTILITY_SUBCOMMAND,
+ NULL,
+ NULL,
+ None_Receiver,
+ NULL);
+}
+
+/*
+ * moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
+ * of the partitioned table (rel) and move rows into the new partition
+ * (newPartRel).
+ */
+static void
+moveMergedTablesRows(Relation rel, List *mergingPartitionsList,
+ Relation newPartRel)
+{
+ CommandId mycid;
+
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ ListCell *listptr;
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot;
+
+ mycid = GetCurrentCommandId(true);
+
+ /* Prepare a BulkInsertState for table_tuple_insert. */
+ bistate = GetBulkInsertState();
+
+ /* Create necessary tuple slot. */
+ dstslot = MakeSingleTupleTableSlot(RelationGetDescr(newPartRel),
+ table_slot_callbacks(newPartRel));
+ ExecStoreAllNullTuple(dstslot);
+
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+ TupleTableSlot *srcslot;
+ TupleConversionMap *tuple_map;
+ TableScanDesc scan;
+ Snapshot snapshot;
+
+ /* Create tuple slot for new partition. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(mergingPartition),
+ table_slot_callbacks(mergingPartition));
+
+ /*
+ * Map computing for moving attributes of merged partition to new
+ * partition.
+ */
+ tuple_map = convert_tuples_by_name(RelationGetDescr(mergingPartition),
+ RelationGetDescr(newPartRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(mergingPartition, snapshot, 0, NULL);
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ TupleTableSlot *insertslot;
+ bool insert_indexes;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /*
+ * Write the tuple out to the new relation. We ignore the
+ * 'insert_indexes' flag since newPartRel has no indexes anyway.
+ */
+ (void) table_tuple_insert(newPartRel, insertslot, mycid,
+ ti_options, bistate, &insert_indexes);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+ }
+
+ ExecDropSingleTupleTableSlot(dstslot);
+ FreeBulkInsertState(bistate);
+
+ table_finish_bulk_insert(newPartRel, ti_options);
+}
+
+/*
+ * ALTER TABLE <name> MERGE PARTITIONS <partition-list> INTO <partition-name>
+ */
+static void
+ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation newPartRel;
+ ListCell *listptr;
+ List *mergingPartitionsList = NIL;
+ Oid defaultPartOid;
+ char tmpRelName[NAMEDATALEN];
+ RangeVar *mergePartName = cmd->name;
+ bool isSameName = false;
+
+ /*
+ * Lock all merged partitions, check them and create list with partitions
+ * contexts.
+ */
+ foreach(listptr, cmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+ Relation mergingPartition;
+
+ /*
+ * We are going to detach and remove this partition: need to use
+ * exclusive lock for prevent DML-queries to the partition.
+ */
+ mergingPartition = table_openrv(name, AccessExclusiveLock);
+
+ if (mergingPartition->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot merge non-table partition \"%s\"",
+ RelationGetRelationName(mergingPartition))));
+
+ /*
+ * Checking that two partitions have the same name was before, in
+ * function transformPartitionCmdForMerge().
+ */
+ if (equal(name, cmd->name))
+ /* One new partition can have the same name as merged partition. */
+ isSameName = true;
+
+ /* Store a next merging partition into the list. */
+ mergingPartitionsList = lappend(mergingPartitionsList,
+ mergingPartition);
+ }
+
+ /* Detach all merged partitions. */
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(mergingPartition, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, mergingPartition, false, defaultPartOid);
+ }
+
+ /* Create table for new partition, use partitioned table as model. */
+ if (isSameName)
+ {
+ /* Create partition table with generated temparary name. */
+ sprintf(tmpRelName, "merge-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ mergePartName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ tmpRelName, -1);
+ }
+ createPartitionTable(mergePartName,
+ makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1),
+ context);
+
+ /*
+ * Open the new partition and acquire exclusive lock on it. This will
+ * stop all the operations with partitioned table. This might seem
+ * excessive, but this is the way we make sure nobody is planning queries
+ * involving merging partitions.
+ */
+ newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+
+ /* Copy data from merged partitions to new partition. */
+ moveMergedTablesRows(rel, mergingPartitionsList, newPartRel);
+
+ /*
+ * Attach a new partition to the partitioned table. wqueue = NULL:
+ * verification for each cloned constraint is not need.
+ */
+ attachPartitionTable(NULL, rel, newPartRel, cmd->bound);
+
+ /* Unlock and drop merged partitions. */
+ foreach(listptr, mergingPartitionsList)
+ {
+ ObjectAddress object;
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Get relation id before table_close() call. */
+ object.objectId = RelationGetRelid(mergingPartition);
+ object.classId = RelationRelationId;
+ object.objectSubId = 0;
+
+ /* Keep the lock until commit. */
+ table_close(mergingPartition, NoLock);
+
+ performDeletion(&object, DROP_RESTRICT, 0);
+ }
+ list_free(mergingPartitionsList);
+
+ /* Rename new partition if it is needed. */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the new partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ RenameRelationInternal(RelationGetRelid(newPartRel),
+ cmd->name->relname, false, false);
+ }
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+}
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 6ea68722e3..1fcdb25142 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -761,7 +761,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
ORDER ORDINALITY OTHERS OUT_P OUTER_P
OVER OVERLAPS OVERLAY OVERRIDING OWNED OWNER
- PARALLEL PARAMETER PARSER PARTIAL PARTITION PASSING PASSWORD PATH
+ PARALLEL PARAMETER PARSER PARTIAL PARTITION PARTITIONS PASSING PASSWORD PATH
PERIOD PLACING PLAN PLANS POLICY
POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
@@ -2317,6 +2317,7 @@ partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = $4;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -2331,6 +2332,7 @@ partition_cmd:
n->subtype = AT_DetachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = $4;
n->def = (Node *) cmd;
@@ -2344,6 +2346,21 @@ partition_cmd:
n->subtype = AT_DetachPartitionFinalize;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
+ /* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
+ | MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_MergePartitions;
+ cmd->name = $7;
+ cmd->bound = NULL;
+ cmd->partlist = $4;
cmd->concurrent = false;
n->def = (Node *) cmd;
$$ = (Node *) n;
@@ -2360,6 +2377,7 @@ index_partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -17668,6 +17686,7 @@ unreserved_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PATH
@@ -18292,6 +18311,7 @@ bare_label_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PATH
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index c7efd8d8ce..48a23c7ca4 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -58,6 +58,8 @@
#include "parser/parse_type.h"
#include "parser/parse_utilcmd.h"
#include "parser/parser.h"
+#include "partitioning/partdesc.h"
+#include "partitioning/partbounds.h"
#include "rewrite/rewriteManip.h"
#include "utils/acl.h"
#include "utils/builtins.h"
@@ -3413,6 +3415,80 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForMerge
+ * Analyze the ALTER TABLLE ... MERGE PARTITIONS command
+ *
+ * Does simple checks for merged partitions. Calculates bound of result
+ * partition.
+ */
+static void
+transformPartitionCmdForMerge(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Oid defaultPartOid;
+ Oid partOid;
+ Relation parent = cxt->rel;
+ PartitionKey key;
+ char strategy;
+ ListCell *listptr,
+ *listptr2;
+ bool isDefaultPart = false;
+ List *partOids = NIL;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ if (strategy == PARTITION_STRATEGY_HASH)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be merged")));
+
+ /* Is current partition a DEFAULT partition? */
+ defaultPartOid = get_default_oid_from_partdesc(
+ RelationGetPartitionDesc(parent, true));
+
+ foreach(listptr, partcmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+
+ /* Partitions in the list should have different names. */
+ for_each_cell(listptr2, partcmd->partlist, lnext(partcmd->partlist, listptr))
+ {
+ RangeVar *name2 = (RangeVar *) lfirst(listptr2);
+
+ if (equal(name, name2))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("partition with name \"%s\" already used", name->relname)),
+ parser_errposition(cxt->pstate, name2->location));
+ }
+
+ /* Search DEFAULT partition in the list. */
+ partOid = RangeVarGetRelid(name, NoLock, false);
+ if (partOid == defaultPartOid)
+ isDefaultPart = true;
+ partOids = lappend_oid(partOids, partOid);
+ }
+
+ /* Allocate bound of result partition. */
+ Assert(partcmd->bound == NULL);
+ partcmd->bound = makeNode(PartitionBoundSpec);
+
+ /* Fill partition bound. */
+ partcmd->bound->strategy = strategy;
+ partcmd->bound->location = -1;
+ partcmd->bound->is_default = isDefaultPart;
+ if (!isDefaultPart)
+ calculate_partition_bound_for_merge(parent, partcmd->partlist,
+ partOids, partcmd->bound,
+ cxt->pstate);
+}
+
/*
* transformAlterTableStmt -
* parse analysis for ALTER TABLE
@@ -3683,6 +3759,19 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_MergePartitions:
+ {
+ PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
+
+ if (list_length(partcmd->partlist) < 2)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("list of new partitions should contains at least two items")));
+ transformPartitionCmdForMerge(&cxt, partcmd);
+ newcmds = lappend(newcmds, cmd);
+ break;
+ }
+
default:
/*
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index c28639d2e3..9ed80d721e 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -4977,3 +4977,210 @@ satisfies_hash_partition(PG_FUNCTION_ARGS)
PG_RETURN_BOOL(rowHash % modulus == remainder);
}
+
+/*
+ * check_two_partitions_bounds_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * This is a helper function for check_partitions_for_split() and
+ * calculate_partition_bound_for_merge().
+ * This function compares upper bound of first_bound and lower bound of
+ * second_bound. These bounds should be equals except case
+ * "defaultPart == true" (this means that one of split partitions is DEFAULT).
+ * In this case upper bound of first_bound can be less than lower bound of
+ * second_bound because space between of these bounds will be included in
+ * DEFAULT partition.
+ *
+ * parent: partitioned table
+ * first_name: name of first partition
+ * first_bound: bound of first partition
+ * second_name: name of second partition
+ * second_bound: bound of second partition
+ * defaultPart: true if one of split partitions is DEFAULT
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_two_partitions_bounds_range(Relation parent,
+ RangeVar *first_name,
+ PartitionBoundSpec *first_bound,
+ RangeVar *second_name,
+ PartitionBoundSpec *second_bound,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *first_upper;
+ PartitionRangeBound *second_lower;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+
+ first_upper = make_one_partition_rbound(key, -1, first_bound->upperdatums, false);
+ second_lower = make_one_partition_rbound(key, -1, second_bound->lowerdatums, true);
+
+ /*
+ * lower1=false (the second to last argument) for correct comparison lower
+ * and upper bounds.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ second_lower->datums, second_lower->kind,
+ false, first_upper);
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ {
+ PartitionRangeDatum *datum = linitial(second_bound->lowerdatums);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("lower bound of partition \"%s\" conflicts with upper bound of previous partition \"%s\"",
+ second_name->relname, first_name->relname),
+ parser_errposition(pstate, datum->location)));
+ }
+}
+
+/*
+ * get_partition_bound_spec
+ *
+ * Returns description of partition with Oid "partOid" and name "name".
+ */
+static PartitionBoundSpec *
+get_partition_bound_spec(Oid partOid, RangeVar *name)
+{
+ HeapTuple tuple;
+ Datum datum;
+ bool isnull;
+ PartitionBoundSpec *boundspec = NULL;
+
+ /* Try fetching the tuple from the catcache, for speed. */
+ tuple = SearchSysCache1(RELOID, partOid);
+ if (!HeapTupleIsValid(tuple))
+ elog(ERROR, "cache lookup failed for relation \"%s\"",
+ name->relname);
+
+ datum = SysCacheGetAttr(RELOID, tuple,
+ Anum_pg_class_relpartbound,
+ &isnull);
+ if (isnull)
+ elog(ERROR, "partition bound for relation \"%s\" is null",
+ name->relname);
+
+ boundspec = stringToNode(TextDatumGetCString(datum));
+
+ if (!IsA(boundspec, PartitionBoundSpec))
+ elog(ERROR, "expected PartitionBoundSpec for relation \"%s\"",
+ name->relname);
+
+ ReleaseSysCache(tuple);
+ return boundspec;
+}
+
+/*
+ * calculate_partition_bound_for_merge
+ *
+ * Calculates the bound of merged partition "spec" by using the bounds of
+ * partitions to be merged.
+ *
+ * parent: partitioned table
+ * partNames: names of partitions to be merged
+ * partOids: Oids of partitions to be merged
+ * spec (out): bounds specification of the merged partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionBoundSpec *bound;
+
+ Assert(!spec->is_default);
+
+ switch (key->strategy)
+ {
+ case PARTITION_STRATEGY_RANGE:
+ {
+ int i;
+ PartitionRangeBound **lower_bounds;
+ int nparts = list_length(partOids);
+ List *bounds = NIL;
+
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /*
+ * Create array of lower bounds and list of
+ * PartitionBoundSpec.
+ */
+ for (i = 0; i < nparts; i++)
+ {
+ bound = get_partition_bound_spec(list_nth_oid(partOids, i),
+ (RangeVar *) list_nth(partNames, i));
+
+ lower_bounds[i] = make_one_partition_rbound(key, i, bound->lowerdatums, true);
+ bounds = lappend(bounds, bound);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Ranges of partitions should not overlap. */
+ for (i = 1; i < nparts; i++)
+ {
+ int index = lower_bounds[i]->index;
+ int prev_index = lower_bounds[i - 1]->index;
+
+ check_two_partitions_bounds_range(parent,
+ (RangeVar *) list_nth(partNames, prev_index),
+ (PartitionBoundSpec *) list_nth(bounds, prev_index),
+ (RangeVar *) list_nth(partNames, index),
+ (PartitionBoundSpec *) list_nth(bounds, index),
+ false, pstate);
+ }
+
+ /*
+ * Lower bound of first partition is a lower bound of merged
+ * partition.
+ */
+ spec->lowerdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[0]->index))->lowerdatums;
+
+ /*
+ * Upper bound of last partition is a upper bound of merged
+ * partition.
+ */
+ spec->upperdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[nparts - 1]->index))->upperdatums;
+
+ pfree(lower_bounds);
+ list_free(bounds);
+ break;
+ }
+
+ case PARTITION_STRATEGY_LIST:
+ {
+ ListCell *listptr,
+ *listptr2;
+
+ /* Consolidate bounds for all partitions in the list. */
+ forboth(listptr, partOids, listptr2, partNames)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr2);
+ Oid curOid = lfirst_oid(listptr);
+
+ bound = get_partition_bound_spec(curOid, name);
+ spec->listdatums = list_concat(spec->listdatums, bound->listdatums);
+ }
+ break;
+ }
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ }
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 76d91e547b..6e8a2b59e8 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -937,6 +937,17 @@ typedef struct PartitionRangeDatum
ParseLoc location; /* token location, or -1 if unknown */
} PartitionRangeDatum;
+/*
+ * PartitionDesc - info about single partition for ALTER TABLE SPLIT PARTITION command
+ */
+typedef struct SinglePartitionSpec
+{
+ NodeTag type;
+
+ RangeVar *name; /* name of partition */
+ PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+} SinglePartitionSpec;
+
/*
* PartitionCmd - info for ALTER TABLE/INDEX ATTACH/DETACH PARTITION commands
*/
@@ -945,6 +956,8 @@ typedef struct PartitionCmd
NodeTag type;
RangeVar *name; /* name of partition to attach/detach */
PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+ List *partlist; /* list of partitions, for SPLIT PARTITION
+ * command */
bool concurrent;
} PartitionCmd;
@@ -2398,6 +2411,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
AT_DropIdentity, /* DROP IDENTITY */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 2d4a0c6a07..a4834eb9b7 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -334,6 +334,7 @@ PG_KEYWORD("parameter", PARAMETER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("parser", PARSER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partial", PARTIAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partition", PARTITION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("partitions", PARTITIONS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("passing", PASSING, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("password", PASSWORD, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("path", PATH, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 3d9cc1031f..0329d7bd84 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,4 +143,10 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate);
+
#endif /* PARTBOUNDS_H */
diff --git a/src/test/isolation/expected/partition-merge.out b/src/test/isolation/expected/partition-merge.out
new file mode 100644
index 0000000000..98446aaab5
--- /dev/null
+++ b/src/test/isolation/expected/partition-merge.out
@@ -0,0 +1,199 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 188fc04f85..8bcaa8a625 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -103,6 +103,7 @@ test: partition-key-update-1
test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
+test: partition-merge
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-merge.spec b/src/test/isolation/specs/partition-merge.spec
new file mode 100644
index 0000000000..ec48732c58
--- /dev/null
+++ b/src/test/isolation/specs/partition-merge.spec
@@ -0,0 +1,54 @@
+# Verify that MERGE operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1merg { ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20; }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2u { UPDATE tpart SET t = 'text01modif' where i = 1; }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s2 inserts row into table. s1 starts MERGE PARTITIONS then
+# s2 trying to update inserted row and waits until s1 finished
+# MERGE operation.
+
+permutation s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 48563b2cf0..69920757b2 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_MergePartitions:
+ strtype = "MERGE PARTITIONS";
+ break;
case AT_AddIdentity:
strtype = "ADD IDENTITY";
break;
diff --git a/src/test/regress/expected/partition_merge.out b/src/test/regress/expected/partition_merge.out
new file mode 100644
index 0000000000..2ba0ec47d9
--- /dev/null
+++ b/src/test/regress/expected/partition_merge.out
@@ -0,0 +1,732 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+ERROR: partition with name "sales_feb2022" already used
+LINE 1: ...e MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2...
+ ^
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+ERROR: cannot merge non-table partition "sales_apr2022"
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_jan2022"
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+ERROR: lower bound of partition "sales_jan2022" conflicts with upper bound of previous partition "sales_dec2021"
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | p | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_dec2021 | r | f | FOR VALUES FROM ('12-01-2021') TO ('12-31-2021')
+ sales_jan_feb_mar2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+ pg_get_partkeydef
+--------------------
+ RANGE (sales_date)
+(1 row)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_mar2022 | r | f | FOR VALUES FROM ('03-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_feb_mar_apr2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('05-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+-------------------------+-----------------------+--------------------------------------+------------+-----------------------------------------------------------------------------------------------------------------------------
+ partitions_merge_schema | sales_feb_mar_apr2022 | sales_feb_mar_apr2022_sales_date_idx | | CREATE INDEX sales_feb_mar_apr2022_sales_date_idx ON partitions_merge_schema.sales_feb_mar_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb_mar_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(10 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+-- Use indexscan for test indexes
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(10 rows)
+
+RESET enable_seqscan;
+DROP TABLE sales_range;
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+select * from sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(7 rows)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+(2 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(2 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(6 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+DROP TABLE sales_date;
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+select * from salesmans;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(6 rows)
+
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(5 rows)
+
+DROP TABLE salesmans;
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr_all;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+ERROR: partition bound for relation "sales_external" is null
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+ERROR: partition bound for relation "sales_external2" is null
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Oslo', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+------------------------------------------------------
+ sales_central | r | f | FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv')
+ sales_east | r | f | FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok')
+ sales_nord | r | f | FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki')
+ sales_west | r | f | FOR VALUES IN ('Lisbon', 'New York', 'Madrid')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+--------------+---------+------------------+--------------------------------------------------------------------------------------------------------------
+ sales_all | r | f | FOR VALUES IN ('Lisbon', 'New York', 'Madrid', 'Bejing', 'Delhi', 'Vladivostok', 'Warsaw', 'Berlin', 'Kyiv')
+ sales_nord | r | f | FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Helsinki | 1200 | 03-06-2022
+ 9 | May | Helsinki | 1200 | 03-11-2022
+ 10 | Halder | Oslo | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Helsinki | 1200 | 03-06-2022
+ 9 | May | Helsinki | 1200 | 03-11-2022
+ 10 | Halder | Oslo | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_all;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(10 rows)
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_seqscan = OFF;
+SELECT * FROM sales_all WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+(1 row)
+
+RESET enable_seqscan;
+DROP TABLE sales_list;
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index e9184b5a40..0bd1444767 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_merge.sql b/src/test/regress/sql/partition_merge.sql
new file mode 100644
index 0000000000..bb461e6623
--- /dev/null
+++ b/src/test/regress/sql/partition_merge.sql
@@ -0,0 +1,430 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb_mar_apr2022;
+SELECT * FROM sales_others;
+
+-- Use indexscan for test indexes
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+
+RESET enable_seqscan;
+
+DROP TABLE sales_range;
+
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+
+select * from sales_others;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+DROP TABLE sales_date;
+
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+select * from salesmans;
+select * from salesmans01_10;
+select * from salesmans10_40;
+
+DROP TABLE salesmans;
+
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr_all;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+
+
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Oslo', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_all;
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_all WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+RESET enable_seqscan;
+
+DROP TABLE sales_list;
+
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index f3b8641d76..eadb33e617 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2628,6 +2628,7 @@ SimpleStats
SimpleStringList
SimpleStringListCell
SingleBoundSortItem
+SinglePartitionSpec
Size
SkipPages
SlabBlock
--
2.40.1.windows.1
From 28e5b5e0257092940c52617d8205ef643692e846 Mon Sep 17 00:00:00 2001
From: Alexander Korotkov <[email protected]>
Date: Tue, 2 Apr 2024 23:27:29 +0300
Subject: [PATCH v31 2/3] Implement ALTER TABLE ... SPLIT PARTITION ... command
This new DDL command splits a single partition into several parititions.
Just like ALTER TABLE ... MERGE PARTITIONS ... command, new patitions are
created using createPartitionTable() function with parent partition as the
template.
This commit comprises quite naive implementation which works in single process
and holds the ACCESS EXCLUSIVE LOCK on the parent table during all the
operations including the tuple routing. This is why this new DDL command
can't be recommended for large partitioned tables under a high load. However,
this implementation come in handy in certain cases even as is.
Also, it could be used as a foundation for future implementations with lesser
locking and possibly parallel.
Discussion: https://postgr.es/m/c73a1746-0cd0-6bdd-6b23-3ae0b7c0c582%40postgrespro.ru
Author: Dmitry Koval
Reviewed-by: Matthias van de Meent, Laurenz Albe, Zhihong Yu, Justin Pryzby
Reviewed-by: Alvaro Herrera, Robert Haas, Stephane Tachoires
---
doc/src/sgml/ddl.sgml | 19 +
doc/src/sgml/ref/alter_table.sgml | 65 +-
src/backend/commands/tablecmds.c | 411 +++++
src/backend/parser/gram.y | 38 +-
src/backend/parser/parse_utilcmd.c | 62 +-
src/backend/partitioning/partbounds.c | 657 ++++++++
src/backend/utils/adt/ruleutils.c | 18 +
src/include/nodes/parsenodes.h | 1 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 5 +
src/include/utils/ruleutils.h | 2 +
.../isolation/expected/partition-split.out | 190 +++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-split.spec | 54 +
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_split.out | 1417 +++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_split.sql | 833 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
19 files changed, 3766 insertions(+), 14 deletions(-)
create mode 100644 src/test/isolation/expected/partition-split.out
create mode 100644 src/test/isolation/specs/partition-split.spec
create mode 100644 src/test/regress/expected/partition_split.out
create mode 100644 src/test/regress/sql/partition_split.sql
diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index f9f2778b3d..cd8304ef75 100644
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -4400,6 +4400,25 @@ ALTER TABLE measurement
measurement_y2006m03) INTO measurement_y2006q1;
</programlisting>
</para>
+
+ <para>
+ Similarly to merging multiple table partitions, there is an option for
+ splitting a single partition into multiple using the
+ <link linkend="sql-altertable-split-partition"><command>ALTER TABLE ... SPLIT PARTITION</command></link>.
+ This feature could come in handy when one partition grows too big
+ and needs to be split into multiple. It's important to note that
+ this operation is not supported for hash-partitioned tables and acquires
+ an <literal>ACCESS EXCLUSIVE</literal> lock, which could impact high-load
+ systems due to the lock's restrictive nature. For example, we can split
+ the quarter partition back to monthly partitions:
+<programlisting>
+ALTER TABLE measurement SPLIT PARTITION measurement_y2006q1 INTO
+ (PARTITION measurement_y2006m01 FOR VALUES FROM ('2006-01-01') TO ('2006-02-01'),
+ PARTITION measurement_y2006m02 FOR VALUES FROM ('2006-02-01') TO ('2006-03-01'),
+ PARTITION measurement_y2006m03 FOR VALUES FROM ('2006-03-01') TO ('2006-04-01'));
+</programlisting>
+ </para>
+
</sect3>
<sect3 id="ddl-partitioning-declarative-limitations">
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index e0a98bc538..a170315585 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,10 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO
+ (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT },
+ PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
INTO <replaceable class="parameter">partition_name</replaceable>
@@ -1121,6 +1125,44 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-split-partition">
+ <term><literal>SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }, PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])</literal></term>
+
+ <listitem>
+ <para>
+ This form splits a single partition of the target table. Hash-partitioning
+ is not supported. Bounds of new partitions should not overlap with new and
+ existing partitions (except <replaceable class="parameter">partition_name</replaceable>).
+ If the split partition is a DEFAULT partition, one of the new partitions must be DEFAULT.
+ In case one of the new partitions or one of existing partitions is DEFAULT,
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have spaces
+ between partitions bounds. If the partitioned table does not have a DEFAULT
+ partition, the DEFAULT partition can be defined as one of the new partitions.
+ </para>
+ <para>
+ In case new partitions do not contain a DEFAULT partition and the partitioned table
+ does not have a DEFAULT partition, the following must be true: sum bounds of
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... should be
+ equal to bound of split partition <replaceable class="parameter">partition_name</replaceable>.
+ One of the new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have
+ the same name as split partition <replaceable class="parameter">partition_name</replaceable>
+ (this is suitable in case of splitting a DEFAULT partition: we split it, but after
+ splitting we have a partition with the same name).
+ Only simple, non-partitioned partition can be split.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
<varlistentry id="sql-altertable-merge-partitions">
<term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
@@ -1188,7 +1230,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
<literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
- and <literal>MERGE PARTITIONS</literal> can be combined into
+ <literal>SPLIT PARTITION</literal>, and <literal>MERGE PARTITIONS</literal>
+ can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1432,7 +1475,7 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<listitem>
<para>
The name of the table to attach as a new partition or to detach from this table,
- or the name of the new merged partition.
+ or the name of split partition, or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1848,6 +1891,24 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To split a single partition of the range-partitioned table:
+<programlisting>
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2023 INTO
+ (PARTITION sales_feb2023 FOR VALUES FROM ('2023-02-01') TO ('2023-03-01'),
+ PARTITION sales_mar2023 FOR VALUES FROM ('2023-03-01') TO ('2023-04-01'),
+ PARTITION sales_apr2023 FOR VALUES FROM ('2023-04-01') TO ('2023-05-01'));
+</programlisting></para>
+
+ <para>
+ To split a single partition of the list-partitioned table:
+<programlisting>
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+</programlisting></para>
+
<para>
To merge several partitions into one partition of the target table:
<programlisting>
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 05e86de8eb..582890a302 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,9 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab,
+ Relation rel, PartitionCmd *cmd,
+ AlterTableUtilityContext *context);
static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
PartitionCmd *cmd, AlterTableUtilityContext *context);
@@ -4740,6 +4743,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_SplitPartition:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
case AT_MergePartitions:
cmd_lockmode = AccessExclusiveLock;
break;
@@ -5163,6 +5170,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_SplitPartition:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
case AT_MergePartitions:
ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
/* No command-specific prep needed */
@@ -5565,6 +5577,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_SplitPartition:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecSplitPartition(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
case AT_MergePartitions:
cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
cur_pass, context);
@@ -6567,6 +6587,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_SplitPartition:
+ return "SPLIT PARTITION";
case AT_MergePartitions:
return "MERGE PARTITIONS";
case AT_AddIdentity:
@@ -20852,6 +20874,260 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+/*
+ * Struct with context of new partition for insert rows from splited partition
+ */
+typedef struct SplitPartitionContext
+{
+ ExprState *partqualstate; /* expression for check slot for partition
+ * (NULL for DEFAULT partition) */
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot; /* slot for insert row into partition */
+ Relation partRel; /* relation for partition */
+} SplitPartitionContext;
+
+
+/*
+ * createSplitPartitionContext: create context for partition and fill it
+ */
+static SplitPartitionContext *
+createSplitPartitionContext(Relation partRel)
+{
+ SplitPartitionContext *pc;
+
+ pc = (SplitPartitionContext *) palloc0(sizeof(SplitPartitionContext));
+ pc->partRel = partRel;
+
+ /*
+ * Prepare a BulkInsertState for table_tuple_insert. The FSM is empty, so
+ * don't bother using it.
+ */
+ pc->bistate = GetBulkInsertState();
+
+ /* Create tuple slot for new partition. */
+ pc->dstslot = MakeSingleTupleTableSlot(RelationGetDescr(pc->partRel),
+ table_slot_callbacks(pc->partRel));
+ ExecStoreAllNullTuple(pc->dstslot);
+
+ return pc;
+}
+
+/*
+ * deleteSplitPartitionContext: delete context for partition
+ */
+static void
+deleteSplitPartitionContext(SplitPartitionContext *pc, int ti_options)
+{
+ ExecDropSingleTupleTableSlot(pc->dstslot);
+ FreeBulkInsertState(pc->bistate);
+
+ table_finish_bulk_insert(pc->partRel, ti_options);
+
+ pfree(pc);
+}
+
+/*
+ * moveSplitTableRows: scan split partition (splitRel) of partitioned table
+ * (rel) and move rows into new partitions.
+ *
+ * New partitions description:
+ * partlist: list of pointers to SinglePartitionSpec structures.
+ * newPartRels: list of Relation's.
+ * defaultPartOid: oid of DEFAULT partition, for table rel.
+ */
+static void
+moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPartRels, Oid defaultPartOid)
+{
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ CommandId mycid;
+ EState *estate;
+ ListCell *listptr,
+ *listptr2;
+ TupleTableSlot *srcslot;
+ ExprContext *econtext;
+ TableScanDesc scan;
+ Snapshot snapshot;
+ MemoryContext oldCxt;
+ List *partContexts = NIL;
+ TupleConversionMap *tuple_map;
+ SplitPartitionContext *defaultPartCtx = NULL,
+ *pc;
+ bool isOldDefaultPart = false;
+
+ mycid = GetCurrentCommandId(true);
+
+ estate = CreateExecutorState();
+
+ forboth(listptr, partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ pc = createSplitPartitionContext((Relation) lfirst(listptr2));
+
+ if (sps->bound->is_default)
+ {
+ /* We should not create constraint for detached DEFAULT partition. */
+ defaultPartCtx = pc;
+ }
+ else
+ {
+ List *partConstraint;
+
+ /* Build expression execution states for partition check quals. */
+ partConstraint = get_qual_from_partbound(rel, sps->bound);
+ partConstraint =
+ (List *) eval_const_expressions(NULL,
+ (Node *) partConstraint);
+ /* Make boolean expression for ExecCheck(). */
+ partConstraint = list_make1(make_ands_explicit(partConstraint));
+
+ /*
+ * Map the vars in the constraint expression from rel's attnos to
+ * splitRel's.
+ */
+ partConstraint = map_partition_varattnos(partConstraint,
+ 1, splitRel, rel);
+
+ pc->partqualstate =
+ ExecPrepareExpr((Expr *) linitial(partConstraint), estate);
+ Assert(pc->partqualstate != NULL);
+ }
+
+ /* Store partition context into list. */
+ partContexts = lappend(partContexts, pc);
+ }
+
+ /*
+ * Create partition context for DEFAULT partition. We can insert values
+ * into this partition in case spaces with values between new partitions.
+ */
+ if (!defaultPartCtx && OidIsValid(defaultPartOid))
+ {
+ /* Indicate that we allocate context for old DEFAULT partition */
+ isOldDefaultPart = true;
+ defaultPartCtx = createSplitPartitionContext(table_open(defaultPartOid, AccessExclusiveLock));
+ }
+
+ econtext = GetPerTupleExprContext(estate);
+
+ /* Create necessary tuple slot. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(splitRel),
+ table_slot_callbacks(splitRel));
+
+ /*
+ * Map computing for moving attributes of split partition to new partition
+ * (for first new partition but other new partitions can use the same
+ * map).
+ */
+ pc = (SplitPartitionContext *) lfirst(list_head(partContexts));
+ tuple_map = convert_tuples_by_name(RelationGetDescr(splitRel),
+ RelationGetDescr(pc->partRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(splitRel, snapshot, 0, NULL);
+
+ /*
+ * Switch to per-tuple memory context and reset it for each tuple
+ * produced, so we don't leak memory.
+ */
+ oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(estate));
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ bool found = false;
+ bool insert_indexes;
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ econtext->ecxt_scantuple = srcslot;
+
+ /* Search partition for current slot srcslot. */
+ foreach(listptr, partContexts)
+ {
+ pc = (SplitPartitionContext *) lfirst(listptr);
+
+ if (pc->partqualstate /* skip DEFAULT partition */ &&
+ ExecCheck(pc->partqualstate, econtext))
+ {
+ found = true;
+ break;
+ }
+ ResetExprContext(econtext);
+ }
+ if (!found)
+ {
+ /* Use DEFAULT partition if it exists. */
+ if (defaultPartCtx)
+ pc = defaultPartCtx;
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_CHECK_VIOLATION),
+ errmsg("can not find partition for split partition row"),
+ errtable(splitRel)));
+ }
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, pc->dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = pc->dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /*
+ * Write the tuple out to the new relation. We ignore the
+ * 'insert_indexes' flag since newPartRel has no indexes anyway.
+ */
+ (void) table_tuple_insert(pc->partRel, insertslot, mycid,
+ ti_options, pc->bistate, &insert_indexes);
+
+ ResetExprContext(econtext);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ MemoryContextSwitchTo(oldCxt);
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+
+ FreeExecutorState(estate);
+
+ foreach(listptr, partContexts)
+ deleteSplitPartitionContext((SplitPartitionContext *) lfirst(listptr), ti_options);
+
+ /* Need to close table and free buffers for DEFAULT partition. */
+ if (isOldDefaultPart)
+ {
+ Relation defaultPartRel = defaultPartCtx->partRel;
+
+ deleteSplitPartitionContext(defaultPartCtx, ti_options);
+ /* Keep the lock until commit. */
+ table_close(defaultPartRel, NoLock);
+ }
+}
+
/*
* createPartitionTable: create table for new partition with given name
* (newPartName) like table (modelRelName)
@@ -20906,6 +21182,141 @@ createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
NULL);
}
+/*
+ * ALTER TABLE <name> SPLIT PARTITION <partition-name> INTO <partition-list>
+ */
+static void
+ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation splitRel;
+ Oid splitRelOid;
+ char relname[NAMEDATALEN];
+ Oid namespaceId;
+ ListCell *listptr,
+ *listptr2;
+ bool isSameName = false;
+ char tmpRelName[NAMEDATALEN];
+ List *newPartRels = NIL;
+ ObjectAddress object;
+ RangeVar *parentName;
+ Oid defaultPartOid;
+
+ defaultPartOid = get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+
+ /*
+ * We are going to detach and remove this partition: need to use exclusive
+ * lock for prevent DML-queries to the partition.
+ */
+ splitRel = table_openrv(cmd->name, AccessExclusiveLock);
+
+ if (splitRel->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot split non-table partition \"%s\"",
+ RelationGetRelationName(splitRel))));
+
+ splitRelOid = RelationGetRelid(splitRel);
+
+ /* Check descriptions of new partitions. */
+ foreach(listptr, cmd->partlist)
+ {
+ Oid existing_relid;
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ strlcpy(relname, sps->name->relname, NAMEDATALEN);
+
+ /*
+ * Look up the namespace in which we are supposed to create the
+ * partition, check we have permission to create there, lock it
+ * against concurrent drop, and mark stmt->relation as
+ * RELPERSISTENCE_TEMP if a temporary namespace is selected.
+ */
+ namespaceId =
+ RangeVarGetAndCheckCreationNamespace(sps->name, NoLock, NULL);
+
+ /*
+ * This would fail later on anyway, if the relation already exists.
+ * But by catching it here we can emit a nicer error message.
+ */
+ existing_relid = get_relname_relid(relname, namespaceId);
+ if (existing_relid == splitRelOid && !isSameName)
+ /* One new partition can have the same name as split partition. */
+ isSameName = true;
+ else if (existing_relid != InvalidOid)
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("relation \"%s\" already exists", relname)));
+ }
+
+ /* Detach split partition. */
+ RemoveInheritance(splitRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, splitRel, false, defaultPartOid);
+
+ /*
+ * If new partition has the same name as split partition then we should
+ * rename split partition for reuse name.
+ */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ sprintf(tmpRelName, "split-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ RenameRelationInternal(splitRelOid, tmpRelName, false, false);
+
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible after rename.
+ */
+ CommandCounterIncrement();
+ }
+
+ /* Create new partitions (like split partition), without indexes. */
+ parentName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1);
+ foreach(listptr, cmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel;
+
+ createPartitionTable(sps->name, parentName, context);
+
+ /* Open the new partition and acquire exclusive lock on it. */
+ newPartRel = table_openrv(sps->name, AccessExclusiveLock);
+
+ newPartRels = lappend(newPartRels, newPartRel);
+ }
+
+ /* Copy data from split partition to new partitions. */
+ moveSplitTableRows(rel, splitRel, cmd->partlist, newPartRels, defaultPartOid);
+ /* Keep the lock until commit. */
+ table_close(splitRel, NoLock);
+
+ /* Attach new partitions to partitioned table. */
+ forboth(listptr, cmd->partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel = (Relation) lfirst(listptr2);
+
+ /* wqueue = NULL: verification for each cloned constraint is not need. */
+ attachPartitionTable(NULL, rel, newPartRel, sps->bound);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+ }
+
+ /* Drop split partition. */
+ object.classId = RelationRelationId;
+ object.objectId = splitRelOid;
+ object.objectSubId = 0;
+ /* Probably DROP_CASCADE is not needed. */
+ performDeletion(&object, DROP_RESTRICT, 0);
+}
+
/*
* moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
* of the partitioned table (rel) and move rows into the new partition
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 1fcdb25142..ee7a89045c 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -269,6 +269,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
PartitionElem *partelem;
PartitionSpec *partspec;
PartitionBoundSpec *partboundspec;
+ SinglePartitionSpec *singlepartspec;
RoleSpec *rolespec;
PublicationObjSpec *publicationobjectspec;
struct SelectLimit *selectlimit;
@@ -646,6 +647,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
%type <partelem> part_elem
%type <list> part_params
%type <partboundspec> PartitionBoundSpec
+%type <singlepartspec> SinglePartitionSpec
+%type <list> partitions_list
%type <list> hash_partbound
%type <defelt> hash_partbound_elem
@@ -777,7 +780,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
SAVEPOINT SCALAR SCHEMA SCHEMAS SCROLL SEARCH SECOND_P SECURITY SELECT
SEQUENCE SEQUENCES
SERIALIZABLE SERVER SESSION SESSION_USER SET SETS SETOF SHARE SHOW
- SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SOURCE SQL_P STABLE STANDALONE_P
+ SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SPLIT SOURCE SQL_P STABLE STANDALONE_P
START STATEMENT STATISTICS STDIN STDOUT STORAGE STORED STRICT_P STRING_P STRIP_P
SUBSCRIPTION SUBSTRING SUPPORT SYMMETRIC SYSID SYSTEM_P SYSTEM_USER
@@ -2307,6 +2310,23 @@ alter_table_cmds:
| alter_table_cmds ',' alter_table_cmd { $$ = lappend($1, $3); }
;
+partitions_list:
+ SinglePartitionSpec { $$ = list_make1($1); }
+ | partitions_list ',' SinglePartitionSpec { $$ = lappend($1, $3); }
+ ;
+
+SinglePartitionSpec:
+ PARTITION qualified_name PartitionBoundSpec
+ {
+ SinglePartitionSpec *n = makeNode(SinglePartitionSpec);
+
+ n->name = $2;
+ n->bound = $3;
+
+ $$ = n;
+ }
+ ;
+
partition_cmd:
/* ALTER TABLE <name> ATTACH PARTITION <table_name> FOR VALUES */
ATTACH PARTITION qualified_name PartitionBoundSpec
@@ -2351,6 +2371,20 @@ partition_cmd:
n->def = (Node *) cmd;
$$ = (Node *) n;
}
+ /* ALTER TABLE <name> SPLIT PARTITION <partition_name> INTO () */
+ | SPLIT PARTITION qualified_name INTO '(' partitions_list ')'
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_SplitPartition;
+ cmd->name = $3;
+ cmd->bound = NULL;
+ cmd->partlist = $6;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
/* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
| MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
{
@@ -17756,6 +17790,7 @@ unreserved_keyword:
| SKIP
| SNAPSHOT
| SOURCE
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
@@ -18393,6 +18428,7 @@ bare_label_keyword:
| SNAPSHOT
| SOME
| SOURCE
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index 48a23c7ca4..88a4a41186 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -136,7 +136,7 @@ static void transformConstraintAttrs(CreateStmtContext *cxt,
List *constraintList);
static void transformColumnType(CreateStmtContext *cxt, ColumnDef *column);
static void setSchemaName(const char *context_schema, char **stmt_schema_name);
-static void transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd);
+static void transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound);
static List *transformPartitionRangeBounds(ParseState *pstate, List *blist,
Relation parent);
static void validateInfiniteBounds(ParseState *pstate, List *blist);
@@ -3415,6 +3415,43 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForSplit
+ * Analyze the ALTER TABLLE ... SPLIT PARTITION command
+ *
+ * For each new partition sps->bound is set to the transformed value of bound.
+ * Does checks for bounds of new partitions.
+ */
+static void
+transformPartitionCmdForSplit(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Relation parent = cxt->rel;
+ Oid splitPartOid;
+ ListCell *listptr;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ /* Transform partition bounds for all partitions in the list: */
+ foreach(listptr, partcmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ cxt->partbound = NULL;
+ transformPartitionCmd(cxt, sps->bound);
+ /* Assign transformed value of the partition bound. */
+ sps->bound = cxt->partbound;
+ }
+
+ splitPartOid = RangeVarGetRelid(partcmd->name, NoLock, false);
+
+ /* Then we should check partitions with transformed bounds. */
+ check_partitions_for_split(parent, splitPartOid, partcmd->name, partcmd->partlist, cxt->pstate);
+}
+
+
/*
* transformPartitionCmdForMerge
* Analyze the ALTER TABLLE ... MERGE PARTITIONS command
@@ -3751,7 +3788,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
- transformPartitionCmd(&cxt, partcmd);
+ transformPartitionCmd(&cxt, partcmd->bound);
/* assign transformed value of the partition bound */
partcmd->bound = cxt.partbound;
}
@@ -3759,6 +3796,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_SplitPartition:
case AT_MergePartitions:
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
@@ -3767,7 +3805,11 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("list of new partitions should contains at least two items")));
- transformPartitionCmdForMerge(&cxt, partcmd);
+
+ if (cmd->subtype == AT_SplitPartition)
+ transformPartitionCmdForSplit(&cxt, partcmd);
+ else
+ transformPartitionCmdForMerge(&cxt, partcmd);
newcmds = lappend(newcmds, cmd);
break;
}
@@ -4172,13 +4214,13 @@ setSchemaName(const char *context_schema, char **stmt_schema_name)
/*
* transformPartitionCmd
- * Analyze the ATTACH/DETACH PARTITION command
+ * Analyze the ATTACH/DETACH/SPLIT PARTITION command
*
- * In case of the ATTACH PARTITION command, cxt->partbound is set to the
- * transformed value of cmd->bound.
+ * In case of the ATTACH/SPLIT PARTITION command, cxt->partbound is set to the
+ * transformed value of bound.
*/
static void
-transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
+transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound)
{
Relation parentRel = cxt->rel;
@@ -4187,9 +4229,9 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
case RELKIND_PARTITIONED_TABLE:
/* transform the partition bound, if any */
Assert(RelationGetPartitionKey(parentRel) != NULL);
- if (cmd->bound != NULL)
+ if (bound != NULL)
cxt->partbound = transformPartitionBound(cxt->pstate, parentRel,
- cmd->bound);
+ bound);
break;
case RELKIND_PARTITIONED_INDEX:
@@ -4197,7 +4239,7 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
* A partitioned index cannot have a partition bound set. ALTER
* INDEX prevents that with its grammar, but not ALTER TABLE.
*/
- if (cmd->bound != NULL)
+ if (bound != NULL)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("\"%s\" is not a partitioned table",
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index 9ed80d721e..c36e26ba4b 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -5040,10 +5040,69 @@ check_two_partitions_bounds_range(Relation parent,
}
}
+/*
+ * check_partitions_not_overlap_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * This is a helper function for check_partitions_for_split().
+ * Checks that the values of the new partitions do not overlap.
+ *
+ * parent: partitioned table
+ * parts: array of SinglePartitionSpec structs with info about split partitions
+ * nparts: size of array "parts"
+ */
+static void
+check_partitions_not_overlap_list(Relation parent,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key PG_USED_FOR_ASSERTS_ONLY = RelationGetPartitionKey(parent);
+ int overlap_location = -1;
+ int i,
+ j;
+ SinglePartitionSpec *sps1,
+ *sps2;
+ List *overlap;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ for (i = 0; i < nparts; i++)
+ {
+ sps1 = parts[i];
+
+ for (j = i + 1; j < nparts; j++)
+ {
+ sps2 = parts[j];
+
+ /*
+ * Calculate intersection between values of two partitions.
+ */
+ overlap = list_intersection(sps1->bound->listdatums,
+ sps2->bound->listdatums);
+ if (list_length(overlap) > 0)
+ {
+ Const *val = (Const *) lfirst(list_head(overlap));
+
+ overlap_location = val->location;
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another new partition \"%s\"",
+ sps1->name->relname, sps2->name->relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ }
+ }
+}
+
/*
* get_partition_bound_spec
*
* Returns description of partition with Oid "partOid" and name "name".
+ *
+ * partOid: partition Oid
+ * name: partition name
*/
static PartitionBoundSpec *
get_partition_bound_spec(Oid partOid, RangeVar *name)
@@ -5076,6 +5135,604 @@ get_partition_bound_spec(Oid partOid, RangeVar *name)
return boundspec;
}
+/*
+ * check_partition_bounds_for_split_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * Checks that bounds of new partition "spec" is inside bounds of split
+ * partition (with Oid splitPartOid). If first=true (this means that "spec" is
+ * the first of new partitions) then lower bound of "spec" should be equal (or
+ * greater than or equal in case defaultPart=true) to lower bound of split
+ * partition. If last=true (this means that "spec" is the last of new
+ * partitions) then upper bound of of "spec" should be equal (or less than or
+ * equal in case defaultPart=true) to upper bound of split partition.
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * first: true in case new partition "spec" is first of new partitions
+ * last: true in case new partition "spec" is last of new partitions
+ * defaultPart: true in case partitioned table has DEFAULT partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_range(Relation parent,
+ char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ bool first,
+ bool last,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *lower,
+ *upper;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+ Assert(spec->strategy == PARTITION_STRATEGY_RANGE);
+
+ lower = make_one_partition_rbound(key, -1, spec->lowerdatums, true);
+ upper = make_one_partition_rbound(key, -1, spec->upperdatums, false);
+
+ /*
+ * First check if the resulting range would be empty with specified lower
+ * and upper bounds. partition_rbound_cmp cannot return zero here, since
+ * the lower-bound flags are different.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, upper);
+ Assert(cmpval != 0);
+ if (cmpval > 0)
+ {
+ /* Point to problematic key in the lower datums list. */
+ PartitionRangeDatum *datum = list_nth(spec->lowerdatums, cmpval - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("empty range bound specified for partition \"%s\"",
+ relname),
+ errdetail("Specified lower bound %s is greater than or equal to upper bound %s.",
+ get_range_partbound_string(spec->lowerdatums),
+ get_range_partbound_string(spec->upperdatums)),
+ parser_errposition(pstate, datum->location)));
+ }
+
+ /* Need to check first and last partitions (from set of new partitions) */
+ if (first || last)
+ {
+ PartitionBoundSpec *split_spec = get_partition_bound_spec(splitPartOid, splitPartName);
+ bool overlap = false;
+
+ if (first)
+ {
+ PartitionRangeBound *split_lower;
+
+ split_lower = make_one_partition_rbound(key, -1, split_spec->lowerdatums, true);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, split_lower);
+
+ /*
+ * Lower bound of "spec" should be equal (or greater than or equal
+ * in case defaultPart=true) to lower bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ overlap = true;
+ }
+ else
+ {
+ PartitionRangeBound *split_upper;
+
+ split_upper = make_one_partition_rbound(key, -1, split_spec->upperdatums, false);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ upper->datums, upper->kind,
+ false, split_upper);
+
+ /*
+ * Upper bound of of "spec" should be equal (or less than or equal
+ * in case defaultPart=true) to upper bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval > 0))
+ overlap = true;
+ }
+
+ if (overlap)
+ {
+ PartitionRangeDatum *datum;
+
+ datum = list_nth(first ? spec->lowerdatums : spec->upperdatums, abs(cmpval) - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("%s bound of partition \"%s\" is %s %s bound of split partition",
+ first ? "lower" : "upper",
+ relname,
+ defaultPart ? (first ? "less than" : "greater than") : "not equals to",
+ first ? "lower" : "upper"),
+ parser_errposition(pstate, datum->location)));
+ }
+ }
+}
+
+/*
+ * check_partition_bounds_for_split_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that bounds of new partition is inside bounds of split partition
+ * (with Oid splitPartOid).
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_list(Relation parent, char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int with = -1;
+ bool overlap = false;
+ int overlap_location = -1;
+ ListCell *cell;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+ Assert(spec->strategy == PARTITION_STRATEGY_LIST);
+ Assert(boundinfo && boundinfo->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Search each value of new partition "spec" in existing partitions. All
+ * of them should be in split partition (with Oid splitPartOid).
+ */
+ foreach(cell, spec->listdatums)
+ {
+ Const *val = lfirst_node(Const, cell);
+
+ overlap_location = val->location;
+ if (!val->constisnull)
+ {
+ int offset;
+ bool equal;
+
+ offset = partition_list_bsearch(&key->partsupfunc[0],
+ key->partcollation,
+ boundinfo,
+ val->constvalue,
+ &equal);
+ if (offset >= 0 && equal)
+ {
+ with = boundinfo->indexes[offset];
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have this value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ else if (partition_bound_accepts_nulls(boundinfo))
+ {
+ with = boundinfo->null_index;
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have NULL value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+
+ if (overlap)
+ {
+ Assert(with >= 0);
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another (not split) partition \"%s\"",
+ relname, get_rel_name(partdesc->oids[with])),
+ parser_errposition(pstate, overlap_location)));
+ }
+}
+
+/*
+ * find_value_in_new_partitions_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Function returns true in case any of new partitions contains value "value".
+ *
+ * partsupfunc: information about comparison function associated with the partition key
+ * partcollation: partitioning collation
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * value: the value that we are looking for
+ * isnull: true if the value that we are looking for is NULL
+ */
+static bool
+find_value_in_new_partitions_list(FmgrInfo *partsupfunc,
+ Oid *partcollation,
+ SinglePartitionSpec **parts,
+ int nparts,
+ Datum value,
+ bool isnull)
+{
+ ListCell *valptr;
+ int i;
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = parts[i];
+
+ foreach(valptr, sps->bound->listdatums)
+ {
+ Const *val = lfirst_node(Const, valptr);
+
+ if (isnull && val->constisnull)
+ return true;
+
+ if (!isnull && !val->constisnull)
+ {
+ if (DatumGetInt32(FunctionCall2Coll(&partsupfunc[0],
+ partcollation[0],
+ val->constvalue,
+ value)) == 0)
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/*
+ * check_parent_values_in_new_partitions
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that all values of split partition (with Oid partOid) contains in new
+ * partitions.
+ *
+ * parent: partitioned table
+ * partOid: split partition Oid
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_parent_values_in_new_partitions(Relation parent,
+ Oid partOid,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int i;
+ bool found = true;
+ bool searchNull = false;
+ Datum datum = PointerGetDatum(NULL);
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Special processing for NULL value. Search NULL-value if it contains
+ * split partition (partOid).
+ */
+ if (partition_bound_accepts_nulls(boundinfo) &&
+ partdesc->oids[boundinfo->null_index] == partOid)
+ {
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, true))
+ {
+ found = false;
+ searchNull = true;
+ }
+ }
+
+ /*
+ * Search all values of split partition with partOid in PartitionDesc of
+ * partitionde table.
+ */
+ for (i = 0; i < boundinfo->ndatums; i++)
+ {
+ if (partdesc->oids[boundinfo->indexes[i]] == partOid)
+ {
+ /* We found value that split partition contains. */
+ datum = boundinfo->datums[i][0];
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, false))
+ {
+ found = false;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ {
+ Const *notFoundVal;
+
+ if (!searchNull)
+ /* Make Const for get string representation of not found value. */
+ notFoundVal = makeConst(key->parttypid[0],
+ key->parttypmod[0],
+ key->parttypcoll[0],
+ key->parttyplen[0],
+ datum,
+ false, /* isnull */
+ key->parttypbyval[0]);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partitions not have value %s but split partition has",
+ searchNull ? "NULL" : get_list_partvalue_string(notFoundVal))));
+ }
+}
+
+/*
+ * check_partitions_for_split
+ *
+ * Checks new partitions for SPLIT PARTITIONS command:
+ * 1. DEFAULT partition should be one.
+ * 2. New partitions should have different names
+ * (with existing partitions too).
+ * 3. Bounds of new partitions should not overlap with new and existing
+ * partitions.
+ * 4. In case split partition is DEFAULT partition, one of new partitions
+ * should be DEFAULT.
+ * 5. In case new partitions or existing partitions contains DEFAULT
+ * partition, new partitions can have any bounds inside split
+ * partition bound (can be spaces between partitions bounds).
+ * 6. In case partitioned table does not have DEFAULT partition, DEFAULT
+ * partition can be defined as one of new partition.
+ * 7. In case new partitions not contains DEFAULT partition and
+ * partitioned table does not have DEFAULT partition the following
+ * should be true: sum bounds of new partitions should be equal
+ * to bound of split partition.
+ *
+ * parent: partitioned table
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * list: list of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate)
+{
+ PartitionKey key;
+ char strategy;
+ Oid defaultPartOid;
+ bool isSplitPartDefault;
+ bool existsDefaultPart;
+ ListCell *listptr;
+ int default_index = -1;
+ int i,
+ j;
+ SinglePartitionSpec **new_parts;
+ SinglePartitionSpec *spsPrev = NULL;
+ int nparts = 0;
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ switch (strategy)
+ {
+ case PARTITION_STRATEGY_LIST:
+ case PARTITION_STRATEGY_RANGE:
+ {
+ /*
+ * Make array new_parts with new partitions except DEFAULT
+ * partition.
+ */
+ new_parts = (SinglePartitionSpec **)
+ palloc0(list_length(partlist) * sizeof(SinglePartitionSpec *));
+ i = 0;
+ foreach(listptr, partlist)
+ {
+ SinglePartitionSpec *sps =
+ (SinglePartitionSpec *) lfirst(listptr);
+
+ if (sps->bound->is_default)
+ {
+ if (default_index >= 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("DEFAULT partition should be one")),
+ parser_errposition(pstate, sps->name->location));
+ default_index = i;
+ }
+ else
+ {
+ new_parts[nparts++] = sps;
+ }
+ i++;
+ }
+ }
+ break;
+
+ case PARTITION_STRATEGY_HASH:
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be split")));
+ break;
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ break;
+ }
+
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ PartitionRangeBound **lower_bounds;
+ SinglePartitionSpec **tmp_new_parts;
+
+ /*
+ * For simplify check for ranges of new partitions need to sort all
+ * partitions in ascending order of them bounds (we compare upper
+ * bound only).
+ */
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /* Create array of lower bounds. */
+ for (i = 0; i < nparts; i++)
+ {
+ lower_bounds[i] = make_one_partition_rbound(key, i,
+ new_parts[i]->bound->lowerdatums, true);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Reorder array of partitions. */
+ tmp_new_parts = new_parts;
+ new_parts = (SinglePartitionSpec **)
+ palloc0(nparts * sizeof(SinglePartitionSpec *));
+ for (i = 0; i < nparts; i++)
+ new_parts[i] = tmp_new_parts[lower_bounds[i]->index];
+
+ pfree(tmp_new_parts);
+ pfree(lower_bounds);
+ }
+
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(parent, true));
+
+ /* isSplitPartDefault flag: is split partition a DEFAULT partition? */
+ isSplitPartDefault = (defaultPartOid == splitPartOid);
+
+ if (isSplitPartDefault && default_index < 0)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("any partition in the list should be DEFAULT because split partition is DEFAULT")),
+ parser_errposition(pstate, ((SinglePartitionSpec *) linitial(partlist))->name->location));
+ }
+ else if (!isSplitPartDefault && (default_index >= 0) && OidIsValid(defaultPartOid))
+ {
+ SinglePartitionSpec *spsDef =
+ (SinglePartitionSpec *) list_nth(partlist, default_index);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition cannot be DEFAULT because DEFAULT partition already exists")),
+ parser_errposition(pstate, spsDef->name->location));
+ }
+
+ /* Indicator that partitioned table has (or will have) DEFAULT partition */
+ existsDefaultPart = OidIsValid(defaultPartOid) || (default_index >= 0);
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = new_parts[i];
+
+ if (isSplitPartDefault)
+ {
+ /*
+ * In case split partition is DEFAULT partition we can use any
+ * free ranges - as when creating a new partition.
+ */
+ check_new_partition_bound(sps->name->relname, parent, sps->bound,
+ pstate);
+ }
+ else
+ {
+ /*
+ * Checks that bound of current partition is inside bound of split
+ * partition. For range partitioning: checks that upper bound of
+ * previous partition is equal to lower bound of current
+ * partition. For list partitioning: checks that split partition
+ * contains all values of current partition.
+ */
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ bool first = (i == 0);
+ bool last = (i == (nparts - 1));
+
+ check_partition_bounds_for_split_range(parent, sps->name->relname, sps->bound,
+ splitPartOid, splitPartName,
+ first, last,
+ existsDefaultPart, pstate);
+ }
+ else
+ check_partition_bounds_for_split_list(parent, sps->name->relname,
+ sps->bound, splitPartOid, pstate);
+ }
+
+ /* Ranges of new partitions should not overlap. */
+ if (strategy == PARTITION_STRATEGY_RANGE && spsPrev)
+ check_two_partitions_bounds_range(parent, spsPrev->name, spsPrev->bound,
+ sps->name, sps->bound, existsDefaultPart, pstate);
+
+ spsPrev = sps;
+
+ /* Check: new partitions should have different names. */
+ for (j = i + 1; j < nparts; j++)
+ {
+ SinglePartitionSpec *sps2 = new_parts[j];
+
+ if (equal(sps->name, sps2->name))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("name \"%s\" already used", sps2->name->relname)),
+ parser_errposition(pstate, sps2->name->location));
+ }
+ }
+
+ if (strategy == PARTITION_STRATEGY_LIST)
+ {
+ /* Values of new partitions should not overlap. */
+ check_partitions_not_overlap_list(parent, new_parts, nparts,
+ pstate);
+
+ /*
+ * Need to check that all values of split partition contains in new
+ * partitions. Skip this check if DEFAULT partition exists.
+ */
+ if (!existsDefaultPart)
+ check_parent_values_in_new_partitions(parent, splitPartOid,
+ new_parts, nparts, pstate);
+ }
+
+ pfree(new_parts);
+}
+
/*
* calculate_partition_bound_for_merge
*
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index c9e3ac88cb..411841047d 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -13241,3 +13241,21 @@ get_range_partbound_string(List *bound_datums)
return buf->data;
}
+
+/*
+ * get_list_partvalue_string
+ * A C string representation of one list partition value
+ */
+char *
+get_list_partvalue_string(Const *val)
+{
+ deparse_context context;
+ StringInfo buf = makeStringInfo();
+
+ memset(&context, 0, sizeof(deparse_context));
+ context.buf = buf;
+
+ get_const_expr(val, &context, -1);
+
+ return buf->data;
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 6e8a2b59e8..01fa1a6c2e 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -2411,6 +2411,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_SplitPartition, /* SPLIT PARTITION */
AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index a4834eb9b7..9e4be53d93 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -419,6 +419,7 @@ PG_KEYWORD("smallint", SMALLINT, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("snapshot", SNAPSHOT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("some", SOME, RESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("source", SOURCE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("split", SPLIT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("sql", SQL_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("stable", STABLE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("standalone", STANDALONE_P, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 0329d7bd84..9d2a26705f 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,6 +143,11 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate);
extern void calculate_partition_bound_for_merge(Relation parent,
List *partNames,
List *partOids,
diff --git a/src/include/utils/ruleutils.h b/src/include/utils/ruleutils.h
index 161fb5ef02..6d86080622 100644
--- a/src/include/utils/ruleutils.h
+++ b/src/include/utils/ruleutils.h
@@ -49,4 +49,6 @@ extern char *get_range_partbound_string(List *bound_datums);
extern char *pg_get_statisticsobjdef_string(Oid statextid);
+extern char *get_list_partvalue_string(Const *val);
+
#endif /* RULEUTILS_H */
diff --git a/src/test/isolation/expected/partition-split.out b/src/test/isolation/expected/partition-split.out
new file mode 100644
index 0000000000..5d9e8b0925
--- /dev/null
+++ b/src/test/isolation/expected/partition-split.out
@@ -0,0 +1,190 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s1b s1splt s2b s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2brr s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2bs s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2b s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2brr s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2bs s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2b s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2brr s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2bs s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 8bcaa8a625..0342eb39e4 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -104,6 +104,7 @@ test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
test: partition-merge
+test: partition-split
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-split.spec b/src/test/isolation/specs/partition-split.spec
new file mode 100644
index 0000000000..087239a4a1
--- /dev/null
+++ b/src/test/isolation/specs/partition-split.spec
@@ -0,0 +1,54 @@
+# Verify that SPLIT operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1splt { ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20)); }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s1 starts SPLIT PARTITION then s2 trying to insert row and
+# waits until s1 finished SPLIT operation.
+
+permutation s1b s1splt s2b s2i s1c s2c s2s
+permutation s1b s1splt s2brr s2i s1c s2c s2s
+permutation s1b s1splt s2bs s2i s1c s2c s2s
+
+permutation s1brr s1splt s2b s2i s1c s2c s2s
+permutation s1brr s1splt s2brr s2i s1c s2c s2s
+permutation s1brr s1splt s2bs s2i s1c s2c s2s
+
+permutation s1bs s1splt s2b s2i s1c s2c s2s
+permutation s1bs s1splt s2brr s2i s1c s2c s2s
+permutation s1bs s1splt s2bs s2i s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 69920757b2..265ef2a547 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_SplitPartition:
+ strtype = "SPLIT PARTITION";
+ break;
case AT_MergePartitions:
strtype = "MERGE PARTITIONS";
break;
diff --git a/src/test/regress/expected/partition_split.out b/src/test/regress/expected/partition_split.out
new file mode 100644
index 0000000000..0a40f20554
--- /dev/null
+++ b/src/test/regress/expected/partition_split.out
@@ -0,0 +1,1417 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_xxx" does not exist
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_jan2022" already exists
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: invalid bound specification for a range partition
+LINE 2: (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '202...
+ ^
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: empty range bound specified for partition "sales_mar2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+DETAIL: Specified lower bound ('03-01-2022') is greater than or equal to upper bound ('02-01-2022').
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+ERROR: list of new partitions should contains at least two items
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO...
+ ^
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb_mar_apr2022" already used
+LINE 3: PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03...
+ ^
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb2022" already used
+LINE 3: PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+LINE 4: ... sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-0...
+ ^
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_feb2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO...
+ ^
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO...
+ ^
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(4 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+ERROR: relation "sales_jan_feb2022" does not exist
+LINE 1: SELECT * FROM sales_jan_feb2022;
+ ^
+DROP TABLE sales_date CASCADE;
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 7 | Li | 175 | 03-08-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 11 | Trump | 380 | 04-06-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(11 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+-----------------------------+------------+----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx | | CREATE INDEX sales_others_sales_date_idx ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_feb2022 | sales_feb2022_sales_date_idx | | CREATE INDEX sales_feb2022_sales_date_idx ON partition_split_schema.sales_feb2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_mar2022 | sales_mar2022_sales_date_idx | | CREATE INDEX sales_mar2022_sales_date_idx ON partition_split_schema.sales_mar2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_apr2022 | sales_apr2022_sales_date_idx | | CREATE INDEX sales_apr2022_sales_date_idx ON partition_split_schema.sales_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+------------------------------+------------+-----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx1 | | CREATE INDEX sales_others_sales_date_idx1 ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211230) TO (2022...
+ ^
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+LINE 4: PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20...
+ ^
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211210) TO (2021...
+ ^
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211201) TO (2022...
+ ^
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+LINE 2: (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20...
+ ^
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_sales_amount_check"
+DETAIL: Failing row contains (1, 0, 03-11-2022).
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(-1) is not present in table "salesmans".
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(40) is not present in table "salesmans".
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+SELECT * FROM salesmans1_2;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans2_3;
+ salesman_id | salesman_name
+-------------+---------------
+ 2 | Ivanov
+(1 row)
+
+SELECT * FROM salesmans3_4;
+ salesman_id | salesman_name
+-------------+---------------
+ 3 | May
+(1 row)
+
+SELECT * FROM salesmans4_5;
+ salesman_id | salesman_name
+-------------+---------------
+ 4 | Ford
+(1 row)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+(2 rows)
+
+select * from salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+select * from salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok', 'Helsinki'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+ERROR: new partition "sales_east" would overlap with another (not split) partition "sales_nord"
+LINE 3: ... FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok', 'Helsinki'...
+ ^
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Lisbon', 'Kyiv'));
+ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+LINE 2: (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York',...
+ ^
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', NULL),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+LINE 2: ...s_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', NULL),
+ ^
+DROP TABLE sales_list;
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok', NULL);
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+ERROR: new partitions not have value NULL but split partition has
+-- ERROR: new partitions not have value 'Kyiv' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', NULL));
+ERROR: new partitions not have value 'Kyiv' but split partition has
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Helsinki', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Oslo | 1200 | 03-06-2022
+ 9 | May | Oslo | 1200 | 03-11-2022
+ 10 | Halder | Helsinki | 800 | 03-02-2022
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+(14 rows)
+
+SELECT * FROM sales_west;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+(4 rows)
+
+SELECT * FROM sales_east;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+(2 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Oslo | 1200 | 03-06-2022
+ 9 | May | Oslo | 1200 | 03-11-2022
+ 10 | Halder | Helsinki | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_central;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(4 rows)
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_central WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 0bd1444767..675c567617 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_split partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_split.sql b/src/test/regress/sql/partition_split.sql
new file mode 100644
index 0000000000..8864f6ddaa
--- /dev/null
+++ b/src/test/regress/sql/partition_split.sql
@@ -0,0 +1,833 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+
+DROP TABLE sales_date CASCADE;
+
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_others;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+
+SELECT * FROM salesmans1_2;
+SELECT * FROM salesmans2_3;
+SELECT * FROM salesmans3_4;
+SELECT * FROM salesmans4_5;
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+select * from salesmans01_10;
+select * from salesmans10_20;
+select * from salesmans20_30;
+select * from salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok', 'Helsinki'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Lisbon', 'Kyiv'));
+
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', NULL),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+DROP TABLE sales_list;
+
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok', NULL);
+
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+-- ERROR: new partitions not have value 'Kyiv' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', NULL));
+
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Helsinki', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_west;
+SELECT * FROM sales_east;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_central;
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_central WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index eadb33e617..c5951fc322 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2692,6 +2692,7 @@ SpecialJoinInfo
SpinDelayStatus
SplitInterval
SplitLR
+SplitPartitionContext
SplitPageLayout
SplitPoint
SplitTextOutputData
--
2.40.1.windows.1
From 233c0c414bc1d952d98b2eef4810f881e6afb24d Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Fri, 5 Apr 2024 14:15:29 +0300
Subject: [PATCH v31 3/3] Additional patch for ALTER TABLE ... MERGE PARTITIONS
... command
---
src/backend/commands/tablecmds.c | 67 +++++++++----------
src/test/regress/expected/partition_merge.out | 2 +-
2 files changed, 34 insertions(+), 35 deletions(-)
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 582890a302..e79aeef920 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -21431,7 +21431,6 @@ ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
ListCell *listptr;
List *mergingPartitionsList = NIL;
Oid defaultPartOid;
- char tmpRelName[NAMEDATALEN];
RangeVar *mergePartName = cmd->name;
bool isSameName = false;
@@ -21461,12 +21460,17 @@ ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
* function transformPartitionCmdForMerge().
*/
if (equal(name, cmd->name))
+ {
/* One new partition can have the same name as merged partition. */
isSameName = true;
-
- /* Store a next merging partition into the list. */
- mergingPartitionsList = lappend(mergingPartitionsList,
- mergingPartition);
+ newPartRel = mergingPartition;
+ }
+ else
+ {
+ /* Store a next merging partition into the list. */
+ mergingPartitionsList = lappend(mergingPartitionsList,
+ mergingPartition);
+ }
}
/* Detach all merged partitions. */
@@ -21482,26 +21486,34 @@ ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
DetachPartitionFinalize(rel, mergingPartition, false, defaultPartOid);
}
- /* Create table for new partition, use partitioned table as model. */
if (isSameName)
{
- /* Create partition table with generated temparary name. */
- sprintf(tmpRelName, "merge-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
- mergePartName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
- tmpRelName, -1);
+ /* Detach partition that we re-use for merged partition. */
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(newPartRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, newPartRel, false, defaultPartOid);
+
+ /* Make these updates visible */
+ CommandCounterIncrement();
}
- createPartitionTable(mergePartName,
- makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
- RelationGetRelationName(rel), -1),
- context);
+ else
+ {
+ /* Create table for new partition, use partitioned table as model. */
+ createPartitionTable(mergePartName,
+ makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1),
+ context);
- /*
- * Open the new partition and acquire exclusive lock on it. This will
- * stop all the operations with partitioned table. This might seem
- * excessive, but this is the way we make sure nobody is planning queries
- * involving merging partitions.
- */
- newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+ /*
+ * Open the new partition and acquire exclusive lock on it. This will
+ * stop all the operations with partitioned table. This might seem
+ * excessive, but this is the way we make sure nobody is planning
+ * queries involving merging partitions.
+ */
+ newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+ }
/* Copy data from merged partitions to new partition. */
moveMergedTablesRows(rel, mergingPartitionsList, newPartRel);
@@ -21529,19 +21541,6 @@ ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
performDeletion(&object, DROP_RESTRICT, 0);
}
list_free(mergingPartitionsList);
-
- /* Rename new partition if it is needed. */
- if (isSameName)
- {
- /*
- * We must bump the command counter to make the new partition tuple
- * visible for rename.
- */
- CommandCounterIncrement();
- /* Rename partition. */
- RenameRelationInternal(RelationGetRelid(newPartRel),
- cmd->name->relname, false, false);
- }
/* Keep the lock until commit. */
table_close(newPartRel, NoLock);
}
diff --git a/src/test/regress/expected/partition_merge.out b/src/test/regress/expected/partition_merge.out
index 2ba0ec47d9..f8dfbfcf41 100644
--- a/src/test/regress/expected/partition_merge.out
+++ b/src/test/regress/expected/partition_merge.out
@@ -211,13 +211,13 @@ ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_ot
select * from sales_others;
salesman_id | salesman_name | sales_amount | sales_date
-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
1 | May | 1000 | 01-31-2022
10 | Halder | 350 | 01-28-2022
13 | Gandi | 377 | 01-09-2022
7 | Li | 175 | 03-08-2022
9 | Muller | 250 | 03-11-2022
12 | Plato | 350 | 03-19-2022
- 14 | Smith | 510 | 05-04-2022
(7 rows)
-- show partitions with conditions:
--
2.40.1.windows.1
Attachments:
[text/plain] v31-0001-Implement-ALTER-TABLE-.-MERGE-PARTITIONS-.-comma.patch (112.8K, ../../[email protected]/2-v31-0001-Implement-ALTER-TABLE-.-MERGE-PARTITIONS-.-comma.patch)
download | inline diff:
From 88ba95c1cbdc4983f27985bd440d71970e69688c Mon Sep 17 00:00:00 2001
From: Alexander Korotkov <[email protected]>
Date: Tue, 2 Apr 2024 23:24:32 +0300
Subject: [PATCH v31 1/3] Implement ALTER TABLE ... MERGE PARTITIONS ...
command
This new DDL command merges several partitions into the one partition of the
target table. The target partition is created using new
createPartitionTable() function with parent partition as the template.
This commit comprises quite naive implementation which works in single process
and holds the ACCESS EXCLUSIVE LOCK on the parent table during all the
operations including the tuple routing. This is why this new DDL command
can't be recommended for large partitioned tables under a high load. However,
this implementation come in handy in certain cases even as is.
Also, it could be used as a foundation for future implementations with lesser
locking and possibly parallel.
Discussion: https://postgr.es/m/c73a1746-0cd0-6bdd-6b23-3ae0b7c0c582%40postgrespro.ru
Author: Dmitry Koval
Reviewed-by: Matthias van de Meent, Laurenz Albe, Zhihong Yu, Justin Pryzby
Reviewed-by: Alvaro Herrera, Robert Haas, Stephane Tachoires
---
doc/src/sgml/ddl.sgml | 19 +
doc/src/sgml/ref/alter_table.sgml | 77 +-
src/backend/commands/tablecmds.c | 354 ++++++++-
src/backend/parser/gram.y | 22 +-
src/backend/parser/parse_utilcmd.c | 89 +++
src/backend/partitioning/partbounds.c | 207 +++++
src/include/nodes/parsenodes.h | 14 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 6 +
.../isolation/expected/partition-merge.out | 199 +++++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-merge.spec | 54 ++
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_merge.out | 732 ++++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_merge.sql | 430 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
17 files changed, 2189 insertions(+), 22 deletions(-)
create mode 100644 src/test/isolation/expected/partition-merge.out
create mode 100644 src/test/isolation/specs/partition-merge.spec
create mode 100644 src/test/regress/expected/partition_merge.out
create mode 100644 src/test/regress/sql/partition_merge.sql
diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index 6bc43ad10c..f9f2778b3d 100644
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -4379,6 +4379,25 @@ ALTER TABLE measurement_y2006m02 ADD UNIQUE (city_id, logdate);
ALTER INDEX measurement_city_id_logdate_key
ATTACH PARTITION measurement_y2006m02_city_id_logdate_key;
...
+</programlisting>
+ </para>
+
+ <para>
+ There is also an option for merging multiple table partitions into
+ a single partition using the
+ <link linkend="sql-altertable-merge-partitions"><command>ALTER TABLE ... MERGE PARTITIONS</command></link>.
+ This feature simplifies the management of partitioned tables by allowing
+ administrators to combine partitions that are no longer needed as
+ separate entities. It's important to note that this operation is not
+ supported for hash-partitioned tables and acquires an
+ <literal>ACCESS EXCLUSIVE</literal> lock, which could impact high-load
+ systems due to the lock's restrictive nature. For example, we can
+ merge three monthly partitions into one quarter partition:
+<programlisting>
+ALTER TABLE measurement
+ MERGE PARTITIONS (measurement_y2006m01,
+ measurement_y2006m02,
+ measurement_y2006m03) INTO measurement_y2006q1;
</programlisting>
</para>
</sect3>
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 6cdcd779ef..e0a98bc538 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,9 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
+ INTO <replaceable class="parameter">partition_name</replaceable>
<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>
@@ -1118,14 +1121,74 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-merge-partitions">
+ <term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
+
+ <listitem>
+ <para>
+ This form merges several partitions into the one partition of the target table.
+ Hash-partitioning is not supported. If DEFAULT partition is not in the
+ list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ For range-partitioned tables is necessary that the ranges
+ of the partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] can
+ be merged into one range without spaces and overlaps (otherwise an error
+ will be generated). The combined range will be the range for the partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For list-partitioned tables the values lists of all partitions
+ <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...] are
+ combined and form a list of values of partition
+ <replaceable class="parameter">partition_name</replaceable>.
+ </para>
+ </listitem>
+ </itemizedlist>
+ If DEFAULT partition is in the list of partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable> [, ...]:
+ <itemizedlist>
+ <listitem>
+ <para>
+ The partition <replaceable class="parameter">partition_name</replaceable>
+ will be the DEFAULT partition.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ For range- and list-partitioned tables the ranges and lists of values
+ of the merged partitions can be any.
+ </para>
+ </listitem>
+ </itemizedlist>
+ The new partition <replaceable class="parameter">partition_name</replaceable>
+ can have the same name as one of the merged partitions. Only simple,
+ non-partitioned partitions can be merged.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
</variablelist>
</para>
<para>
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
- <literal>ATTACH PARTITION</literal>, and
- <literal>DETACH PARTITION</literal> can be combined into
+ <literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
+ and <literal>MERGE PARTITIONS</literal> can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1368,7 +1431,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<term><replaceable class="parameter">partition_name</replaceable></term>
<listitem>
<para>
- The name of the table to attach as a new partition or to detach from this table.
+ The name of the table to attach as a new partition or to detach from this table,
+ or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1784,6 +1848,13 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To merge several partitions into one partition of the target table:
+<programlisting>
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central)
+ INTO sales_all;
+</programlisting></para>
+
</refsect1>
<refsect1>
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 317b89f67c..05e86de8eb 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,8 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context);
/* ----------------------------------------------------------------
* DefineRelation
@@ -4738,6 +4740,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_MergePartitions:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5157,6 +5163,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_MergePartitions:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -5554,6 +5565,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_MergePartitions:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecMergePartitions(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
default: /* oops */
elog(ERROR, "unrecognized alter table type: %d",
(int) cmd->subtype);
@@ -6548,6 +6567,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_MergePartitions:
+ return "MERGE PARTITIONS";
case AT_AddIdentity:
return "ALTER COLUMN ... ADD IDENTITY";
case AT_SetIdentity:
@@ -19042,6 +19063,37 @@ QueuePartitionConstraintValidation(List **wqueue, Relation scanrel,
}
}
+/*
+ * attachPartitionTable: attach new partition to partitioned table
+ *
+ * wqueue: the ALTER TABLE work queue; can be NULL when not running as part
+ * of an ALTER TABLE sequence.
+ * rel: partitioned relation;
+ * attachrel: relation of attached partition;
+ * bound: bounds of attached relation.
+ */
+static void
+attachPartitionTable(List **wqueue, Relation rel, Relation attachrel, PartitionBoundSpec *bound)
+{
+ /* OK to create inheritance. Rest of the checks performed there */
+ CreateInheritance(attachrel, rel, true);
+
+ /* Update the pg_class entry. */
+ StorePartitionBound(attachrel, rel, bound);
+
+ /* Ensure there exists a correct set of indexes in the partition. */
+ AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
+
+ /* and triggers */
+ CloneRowTriggersToPartition(rel, attachrel);
+
+ /*
+ * Clone foreign key constraints. Callee is responsible for setting up
+ * for phase 3 constraint verification.
+ */
+ CloneForeignKeyConstraints(wqueue, rel, attachrel);
+}
+
/*
* ALTER TABLE <name> ATTACH PARTITION <partition-name> FOR VALUES
*
@@ -19244,23 +19296,8 @@ ATExecAttachPartition(List **wqueue, Relation rel, PartitionCmd *cmd,
check_new_partition_bound(RelationGetRelationName(attachrel), rel,
cmd->bound, pstate);
- /* OK to create inheritance. Rest of the checks performed there */
- CreateInheritance(attachrel, rel, true);
-
- /* Update the pg_class entry. */
- StorePartitionBound(attachrel, rel, cmd->bound);
-
- /* Ensure there exists a correct set of indexes in the partition. */
- AttachPartitionEnsureIndexes(wqueue, rel, attachrel);
-
- /* and triggers */
- CloneRowTriggersToPartition(rel, attachrel);
-
- /*
- * Clone foreign key constraints. Callee is responsible for setting up
- * for phase 3 constraint verification.
- */
- CloneForeignKeyConstraints(wqueue, rel, attachrel);
+ /* Attach a new partition to the partitioned table. */
+ attachPartitionTable(wqueue, rel, attachrel, cmd->bound);
/*
* Generate partition constraint from the partition bound specification.
@@ -20814,3 +20851,286 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+
+/*
+ * createPartitionTable: create table for new partition with given name
+ * (newPartName) like table (modelRelName)
+ *
+ * Emulates command: CREATE TABLE <newPartName> (LIKE <modelRelName>
+ * INCLUDING ALL EXCLUDING INDEXES EXCLUDING IDENTITY)
+ */
+static void
+createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
+ AlterTableUtilityContext *context)
+{
+ CreateStmt *createStmt;
+ TableLikeClause *tlc;
+ PlannedStmt *wrapper;
+
+ createStmt = makeNode(CreateStmt);
+ createStmt->relation = newPartName;
+ createStmt->tableElts = NIL;
+ createStmt->inhRelations = NIL;
+ createStmt->constraints = NIL;
+ createStmt->options = NIL;
+ createStmt->oncommit = ONCOMMIT_NOOP;
+ createStmt->tablespacename = NULL;
+ createStmt->if_not_exists = false;
+
+ tlc = makeNode(TableLikeClause);
+ tlc->relation = modelRelName;
+
+ /*
+ * Indexes will be inherited on "attach new partitions" stage, after data
+ * moving.
+ */
+ tlc->options = CREATE_TABLE_LIKE_ALL & ~(CREATE_TABLE_LIKE_INDEXES | CREATE_TABLE_LIKE_IDENTITY);
+ tlc->relationOid = InvalidOid;
+ createStmt->tableElts = lappend(createStmt->tableElts, tlc);
+
+ /* Need to make a wrapper PlannedStmt. */
+ wrapper = makeNode(PlannedStmt);
+ wrapper->commandType = CMD_UTILITY;
+ wrapper->canSetTag = false;
+ wrapper->utilityStmt = (Node *) createStmt;
+ wrapper->stmt_location = context->pstmt->stmt_location;
+ wrapper->stmt_len = context->pstmt->stmt_len;
+
+ ProcessUtility(wrapper,
+ context->queryString,
+ false,
+ PROCESS_UTILITY_SUBCOMMAND,
+ NULL,
+ NULL,
+ None_Receiver,
+ NULL);
+}
+
+/*
+ * moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
+ * of the partitioned table (rel) and move rows into the new partition
+ * (newPartRel).
+ */
+static void
+moveMergedTablesRows(Relation rel, List *mergingPartitionsList,
+ Relation newPartRel)
+{
+ CommandId mycid;
+
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ ListCell *listptr;
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot;
+
+ mycid = GetCurrentCommandId(true);
+
+ /* Prepare a BulkInsertState for table_tuple_insert. */
+ bistate = GetBulkInsertState();
+
+ /* Create necessary tuple slot. */
+ dstslot = MakeSingleTupleTableSlot(RelationGetDescr(newPartRel),
+ table_slot_callbacks(newPartRel));
+ ExecStoreAllNullTuple(dstslot);
+
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+ TupleTableSlot *srcslot;
+ TupleConversionMap *tuple_map;
+ TableScanDesc scan;
+ Snapshot snapshot;
+
+ /* Create tuple slot for new partition. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(mergingPartition),
+ table_slot_callbacks(mergingPartition));
+
+ /*
+ * Map computing for moving attributes of merged partition to new
+ * partition.
+ */
+ tuple_map = convert_tuples_by_name(RelationGetDescr(mergingPartition),
+ RelationGetDescr(newPartRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(mergingPartition, snapshot, 0, NULL);
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ TupleTableSlot *insertslot;
+ bool insert_indexes;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /*
+ * Write the tuple out to the new relation. We ignore the
+ * 'insert_indexes' flag since newPartRel has no indexes anyway.
+ */
+ (void) table_tuple_insert(newPartRel, insertslot, mycid,
+ ti_options, bistate, &insert_indexes);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+ }
+
+ ExecDropSingleTupleTableSlot(dstslot);
+ FreeBulkInsertState(bistate);
+
+ table_finish_bulk_insert(newPartRel, ti_options);
+}
+
+/*
+ * ALTER TABLE <name> MERGE PARTITIONS <partition-list> INTO <partition-name>
+ */
+static void
+ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation newPartRel;
+ ListCell *listptr;
+ List *mergingPartitionsList = NIL;
+ Oid defaultPartOid;
+ char tmpRelName[NAMEDATALEN];
+ RangeVar *mergePartName = cmd->name;
+ bool isSameName = false;
+
+ /*
+ * Lock all merged partitions, check them and create list with partitions
+ * contexts.
+ */
+ foreach(listptr, cmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+ Relation mergingPartition;
+
+ /*
+ * We are going to detach and remove this partition: need to use
+ * exclusive lock for prevent DML-queries to the partition.
+ */
+ mergingPartition = table_openrv(name, AccessExclusiveLock);
+
+ if (mergingPartition->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot merge non-table partition \"%s\"",
+ RelationGetRelationName(mergingPartition))));
+
+ /*
+ * Checking that two partitions have the same name was before, in
+ * function transformPartitionCmdForMerge().
+ */
+ if (equal(name, cmd->name))
+ /* One new partition can have the same name as merged partition. */
+ isSameName = true;
+
+ /* Store a next merging partition into the list. */
+ mergingPartitionsList = lappend(mergingPartitionsList,
+ mergingPartition);
+ }
+
+ /* Detach all merged partitions. */
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+ foreach(listptr, mergingPartitionsList)
+ {
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(mergingPartition, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, mergingPartition, false, defaultPartOid);
+ }
+
+ /* Create table for new partition, use partitioned table as model. */
+ if (isSameName)
+ {
+ /* Create partition table with generated temparary name. */
+ sprintf(tmpRelName, "merge-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ mergePartName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ tmpRelName, -1);
+ }
+ createPartitionTable(mergePartName,
+ makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1),
+ context);
+
+ /*
+ * Open the new partition and acquire exclusive lock on it. This will
+ * stop all the operations with partitioned table. This might seem
+ * excessive, but this is the way we make sure nobody is planning queries
+ * involving merging partitions.
+ */
+ newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+
+ /* Copy data from merged partitions to new partition. */
+ moveMergedTablesRows(rel, mergingPartitionsList, newPartRel);
+
+ /*
+ * Attach a new partition to the partitioned table. wqueue = NULL:
+ * verification for each cloned constraint is not need.
+ */
+ attachPartitionTable(NULL, rel, newPartRel, cmd->bound);
+
+ /* Unlock and drop merged partitions. */
+ foreach(listptr, mergingPartitionsList)
+ {
+ ObjectAddress object;
+ Relation mergingPartition = (Relation) lfirst(listptr);
+
+ /* Get relation id before table_close() call. */
+ object.objectId = RelationGetRelid(mergingPartition);
+ object.classId = RelationRelationId;
+ object.objectSubId = 0;
+
+ /* Keep the lock until commit. */
+ table_close(mergingPartition, NoLock);
+
+ performDeletion(&object, DROP_RESTRICT, 0);
+ }
+ list_free(mergingPartitionsList);
+
+ /* Rename new partition if it is needed. */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the new partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ RenameRelationInternal(RelationGetRelid(newPartRel),
+ cmd->name->relname, false, false);
+ }
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+}
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 6ea68722e3..1fcdb25142 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -761,7 +761,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
ORDER ORDINALITY OTHERS OUT_P OUTER_P
OVER OVERLAPS OVERLAY OVERRIDING OWNED OWNER
- PARALLEL PARAMETER PARSER PARTIAL PARTITION PASSING PASSWORD PATH
+ PARALLEL PARAMETER PARSER PARTIAL PARTITION PARTITIONS PASSING PASSWORD PATH
PERIOD PLACING PLAN PLANS POLICY
POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
@@ -2317,6 +2317,7 @@ partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = $4;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -2331,6 +2332,7 @@ partition_cmd:
n->subtype = AT_DetachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = $4;
n->def = (Node *) cmd;
@@ -2344,6 +2346,21 @@ partition_cmd:
n->subtype = AT_DetachPartitionFinalize;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
+ /* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
+ | MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_MergePartitions;
+ cmd->name = $7;
+ cmd->bound = NULL;
+ cmd->partlist = $4;
cmd->concurrent = false;
n->def = (Node *) cmd;
$$ = (Node *) n;
@@ -2360,6 +2377,7 @@ index_partition_cmd:
n->subtype = AT_AttachPartition;
cmd->name = $3;
cmd->bound = NULL;
+ cmd->partlist = NULL;
cmd->concurrent = false;
n->def = (Node *) cmd;
@@ -17668,6 +17686,7 @@ unreserved_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PATH
@@ -18292,6 +18311,7 @@ bare_label_keyword:
| PARSER
| PARTIAL
| PARTITION
+ | PARTITIONS
| PASSING
| PASSWORD
| PATH
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index c7efd8d8ce..48a23c7ca4 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -58,6 +58,8 @@
#include "parser/parse_type.h"
#include "parser/parse_utilcmd.h"
#include "parser/parser.h"
+#include "partitioning/partdesc.h"
+#include "partitioning/partbounds.h"
#include "rewrite/rewriteManip.h"
#include "utils/acl.h"
#include "utils/builtins.h"
@@ -3413,6 +3415,80 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForMerge
+ * Analyze the ALTER TABLLE ... MERGE PARTITIONS command
+ *
+ * Does simple checks for merged partitions. Calculates bound of result
+ * partition.
+ */
+static void
+transformPartitionCmdForMerge(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Oid defaultPartOid;
+ Oid partOid;
+ Relation parent = cxt->rel;
+ PartitionKey key;
+ char strategy;
+ ListCell *listptr,
+ *listptr2;
+ bool isDefaultPart = false;
+ List *partOids = NIL;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ if (strategy == PARTITION_STRATEGY_HASH)
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be merged")));
+
+ /* Is current partition a DEFAULT partition? */
+ defaultPartOid = get_default_oid_from_partdesc(
+ RelationGetPartitionDesc(parent, true));
+
+ foreach(listptr, partcmd->partlist)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr);
+
+ /* Partitions in the list should have different names. */
+ for_each_cell(listptr2, partcmd->partlist, lnext(partcmd->partlist, listptr))
+ {
+ RangeVar *name2 = (RangeVar *) lfirst(listptr2);
+
+ if (equal(name, name2))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("partition with name \"%s\" already used", name->relname)),
+ parser_errposition(cxt->pstate, name2->location));
+ }
+
+ /* Search DEFAULT partition in the list. */
+ partOid = RangeVarGetRelid(name, NoLock, false);
+ if (partOid == defaultPartOid)
+ isDefaultPart = true;
+ partOids = lappend_oid(partOids, partOid);
+ }
+
+ /* Allocate bound of result partition. */
+ Assert(partcmd->bound == NULL);
+ partcmd->bound = makeNode(PartitionBoundSpec);
+
+ /* Fill partition bound. */
+ partcmd->bound->strategy = strategy;
+ partcmd->bound->location = -1;
+ partcmd->bound->is_default = isDefaultPart;
+ if (!isDefaultPart)
+ calculate_partition_bound_for_merge(parent, partcmd->partlist,
+ partOids, partcmd->bound,
+ cxt->pstate);
+}
+
/*
* transformAlterTableStmt -
* parse analysis for ALTER TABLE
@@ -3683,6 +3759,19 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_MergePartitions:
+ {
+ PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
+
+ if (list_length(partcmd->partlist) < 2)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("list of new partitions should contains at least two items")));
+ transformPartitionCmdForMerge(&cxt, partcmd);
+ newcmds = lappend(newcmds, cmd);
+ break;
+ }
+
default:
/*
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index c28639d2e3..9ed80d721e 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -4977,3 +4977,210 @@ satisfies_hash_partition(PG_FUNCTION_ARGS)
PG_RETURN_BOOL(rowHash % modulus == remainder);
}
+
+/*
+ * check_two_partitions_bounds_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * This is a helper function for check_partitions_for_split() and
+ * calculate_partition_bound_for_merge().
+ * This function compares upper bound of first_bound and lower bound of
+ * second_bound. These bounds should be equals except case
+ * "defaultPart == true" (this means that one of split partitions is DEFAULT).
+ * In this case upper bound of first_bound can be less than lower bound of
+ * second_bound because space between of these bounds will be included in
+ * DEFAULT partition.
+ *
+ * parent: partitioned table
+ * first_name: name of first partition
+ * first_bound: bound of first partition
+ * second_name: name of second partition
+ * second_bound: bound of second partition
+ * defaultPart: true if one of split partitions is DEFAULT
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_two_partitions_bounds_range(Relation parent,
+ RangeVar *first_name,
+ PartitionBoundSpec *first_bound,
+ RangeVar *second_name,
+ PartitionBoundSpec *second_bound,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *first_upper;
+ PartitionRangeBound *second_lower;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+
+ first_upper = make_one_partition_rbound(key, -1, first_bound->upperdatums, false);
+ second_lower = make_one_partition_rbound(key, -1, second_bound->lowerdatums, true);
+
+ /*
+ * lower1=false (the second to last argument) for correct comparison lower
+ * and upper bounds.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ second_lower->datums, second_lower->kind,
+ false, first_upper);
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ {
+ PartitionRangeDatum *datum = linitial(second_bound->lowerdatums);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("lower bound of partition \"%s\" conflicts with upper bound of previous partition \"%s\"",
+ second_name->relname, first_name->relname),
+ parser_errposition(pstate, datum->location)));
+ }
+}
+
+/*
+ * get_partition_bound_spec
+ *
+ * Returns description of partition with Oid "partOid" and name "name".
+ */
+static PartitionBoundSpec *
+get_partition_bound_spec(Oid partOid, RangeVar *name)
+{
+ HeapTuple tuple;
+ Datum datum;
+ bool isnull;
+ PartitionBoundSpec *boundspec = NULL;
+
+ /* Try fetching the tuple from the catcache, for speed. */
+ tuple = SearchSysCache1(RELOID, partOid);
+ if (!HeapTupleIsValid(tuple))
+ elog(ERROR, "cache lookup failed for relation \"%s\"",
+ name->relname);
+
+ datum = SysCacheGetAttr(RELOID, tuple,
+ Anum_pg_class_relpartbound,
+ &isnull);
+ if (isnull)
+ elog(ERROR, "partition bound for relation \"%s\" is null",
+ name->relname);
+
+ boundspec = stringToNode(TextDatumGetCString(datum));
+
+ if (!IsA(boundspec, PartitionBoundSpec))
+ elog(ERROR, "expected PartitionBoundSpec for relation \"%s\"",
+ name->relname);
+
+ ReleaseSysCache(tuple);
+ return boundspec;
+}
+
+/*
+ * calculate_partition_bound_for_merge
+ *
+ * Calculates the bound of merged partition "spec" by using the bounds of
+ * partitions to be merged.
+ *
+ * parent: partitioned table
+ * partNames: names of partitions to be merged
+ * partOids: Oids of partitions to be merged
+ * spec (out): bounds specification of the merged partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionBoundSpec *bound;
+
+ Assert(!spec->is_default);
+
+ switch (key->strategy)
+ {
+ case PARTITION_STRATEGY_RANGE:
+ {
+ int i;
+ PartitionRangeBound **lower_bounds;
+ int nparts = list_length(partOids);
+ List *bounds = NIL;
+
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /*
+ * Create array of lower bounds and list of
+ * PartitionBoundSpec.
+ */
+ for (i = 0; i < nparts; i++)
+ {
+ bound = get_partition_bound_spec(list_nth_oid(partOids, i),
+ (RangeVar *) list_nth(partNames, i));
+
+ lower_bounds[i] = make_one_partition_rbound(key, i, bound->lowerdatums, true);
+ bounds = lappend(bounds, bound);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Ranges of partitions should not overlap. */
+ for (i = 1; i < nparts; i++)
+ {
+ int index = lower_bounds[i]->index;
+ int prev_index = lower_bounds[i - 1]->index;
+
+ check_two_partitions_bounds_range(parent,
+ (RangeVar *) list_nth(partNames, prev_index),
+ (PartitionBoundSpec *) list_nth(bounds, prev_index),
+ (RangeVar *) list_nth(partNames, index),
+ (PartitionBoundSpec *) list_nth(bounds, index),
+ false, pstate);
+ }
+
+ /*
+ * Lower bound of first partition is a lower bound of merged
+ * partition.
+ */
+ spec->lowerdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[0]->index))->lowerdatums;
+
+ /*
+ * Upper bound of last partition is a upper bound of merged
+ * partition.
+ */
+ spec->upperdatums =
+ ((PartitionBoundSpec *) list_nth(bounds, lower_bounds[nparts - 1]->index))->upperdatums;
+
+ pfree(lower_bounds);
+ list_free(bounds);
+ break;
+ }
+
+ case PARTITION_STRATEGY_LIST:
+ {
+ ListCell *listptr,
+ *listptr2;
+
+ /* Consolidate bounds for all partitions in the list. */
+ forboth(listptr, partOids, listptr2, partNames)
+ {
+ RangeVar *name = (RangeVar *) lfirst(listptr2);
+ Oid curOid = lfirst_oid(listptr);
+
+ bound = get_partition_bound_spec(curOid, name);
+ spec->listdatums = list_concat(spec->listdatums, bound->listdatums);
+ }
+ break;
+ }
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ }
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 76d91e547b..6e8a2b59e8 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -937,6 +937,17 @@ typedef struct PartitionRangeDatum
ParseLoc location; /* token location, or -1 if unknown */
} PartitionRangeDatum;
+/*
+ * PartitionDesc - info about single partition for ALTER TABLE SPLIT PARTITION command
+ */
+typedef struct SinglePartitionSpec
+{
+ NodeTag type;
+
+ RangeVar *name; /* name of partition */
+ PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+} SinglePartitionSpec;
+
/*
* PartitionCmd - info for ALTER TABLE/INDEX ATTACH/DETACH PARTITION commands
*/
@@ -945,6 +956,8 @@ typedef struct PartitionCmd
NodeTag type;
RangeVar *name; /* name of partition to attach/detach */
PartitionBoundSpec *bound; /* FOR VALUES, if attaching */
+ List *partlist; /* list of partitions, for SPLIT PARTITION
+ * command */
bool concurrent;
} PartitionCmd;
@@ -2398,6 +2411,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
AT_DropIdentity, /* DROP IDENTITY */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 2d4a0c6a07..a4834eb9b7 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -334,6 +334,7 @@ PG_KEYWORD("parameter", PARAMETER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("parser", PARSER, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partial", PARTIAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partition", PARTITION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("partitions", PARTITIONS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("passing", PASSING, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("password", PASSWORD, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("path", PATH, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 3d9cc1031f..0329d7bd84 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,4 +143,10 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void calculate_partition_bound_for_merge(Relation parent,
+ List *partNames,
+ List *partOids,
+ PartitionBoundSpec *spec,
+ ParseState *pstate);
+
#endif /* PARTBOUNDS_H */
diff --git a/src/test/isolation/expected/partition-merge.out b/src/test/isolation/expected/partition-merge.out
new file mode 100644
index 0000000000..98446aaab5
--- /dev/null
+++ b/src/test/isolation/expected/partition-merge.out
@@ -0,0 +1,199 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1b: BEGIN;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01');
+step s2c: COMMIT;
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1merg: ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20;
+step s2b: BEGIN;
+step s2u: UPDATE tpart SET t = 'text01modif' where i = 1; <waiting ...>
+step s1c: COMMIT;
+step s2u: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+-----------
+ 5|text05
+15|text15
+ 1|text01modif
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 188fc04f85..8bcaa8a625 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -103,6 +103,7 @@ test: partition-key-update-1
test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
+test: partition-merge
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-merge.spec b/src/test/isolation/specs/partition-merge.spec
new file mode 100644
index 0000000000..ec48732c58
--- /dev/null
+++ b/src/test/isolation/specs/partition-merge.spec
@@ -0,0 +1,54 @@
+# Verify that MERGE operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1merg { ALTER TABLE tpart MERGE PARTITIONS (tpart_00_10, tpart_10_20) INTO tpart_00_20; }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2u { UPDATE tpart SET t = 'text01modif' where i = 1; }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s2 inserts row into table. s1 starts MERGE PARTITIONS then
+# s2 trying to update inserted row and waits until s1 finished
+# MERGE operation.
+
+permutation s2b s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2b s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2brr s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2brr s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
+
+permutation s2bs s2i s2c s1b s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1brr s1merg s2b s2u s1c s2c s2s
+permutation s2bs s2i s2c s1bs s1merg s2b s2u s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 48563b2cf0..69920757b2 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_MergePartitions:
+ strtype = "MERGE PARTITIONS";
+ break;
case AT_AddIdentity:
strtype = "ADD IDENTITY";
break;
diff --git a/src/test/regress/expected/partition_merge.out b/src/test/regress/expected/partition_merge.out
new file mode 100644
index 0000000000..2ba0ec47d9
--- /dev/null
+++ b/src/test/regress/expected/partition_merge.out
@@ -0,0 +1,732 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+ERROR: partition with name "sales_feb2022" already used
+LINE 1: ...e MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2...
+ ^
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+ERROR: cannot merge non-table partition "sales_apr2022"
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_jan2022"
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+ERROR: lower bound of partition "sales_jan2022" conflicts with upper bound of previous partition "sales_dec2021"
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | p | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_dec2021 | r | f | FOR VALUES FROM ('12-01-2021') TO ('12-31-2021')
+ sales_jan_feb_mar2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+ pg_get_partkeydef
+--------------------
+ RANGE (sales_date)
+(1 row)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_mar2022 | r | f | FOR VALUES FROM ('03-01-2022') TO ('04-01-2022')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+-----------------------+---------+------------------+--------------------------------------------------
+ sales_feb_mar_apr2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('05-01-2022')
+ sales_jan2022 | r | f | FOR VALUES FROM ('01-01-2022') TO ('02-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+-------------------------+-----------------------+--------------------------------------+------------+-----------------------------------------------------------------------------------------------------------------------------
+ partitions_merge_schema | sales_feb_mar_apr2022 | sales_feb_mar_apr2022_sales_date_idx | | CREATE INDEX sales_feb_mar_apr2022_sales_date_idx ON partitions_merge_schema.sales_feb_mar_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb_mar_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(10 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+-- Use indexscan for test indexes
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(10 rows)
+
+RESET enable_seqscan;
+DROP TABLE sales_range;
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+select * from sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(7 rows)
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+--------------------------------------------------
+ sales_apr2022 | r | f | FOR VALUES FROM ('04-01-2022') TO ('05-01-2022')
+ sales_feb2022 | r | f | FOR VALUES FROM ('02-01-2022') TO ('03-01-2022')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+(2 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(2 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(6 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+DROP TABLE sales_date;
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+select * from salesmans;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(6 rows)
+
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+ 20 | Smirnoff
+ 31 | Popov
+ 30 | Ford
+(5 rows)
+
+DROP TABLE salesmans;
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr_all;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+ERROR: partition bound for relation "sales_external" is null
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+ERROR: partition bound for relation "sales_external2" is null
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Oslo', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+---------------+---------+------------------+------------------------------------------------------
+ sales_central | r | f | FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv')
+ sales_east | r | f | FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok')
+ sales_nord | r | f | FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki')
+ sales_west | r | f | FOR VALUES IN ('Lisbon', 'New York', 'Madrid')
+ sales_others | r | f | DEFAULT
+(5 rows)
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+ oid | relkind | inhdetachpending | pg_get_expr
+--------------+---------+------------------+--------------------------------------------------------------------------------------------------------------
+ sales_all | r | f | FOR VALUES IN ('Lisbon', 'New York', 'Madrid', 'Bejing', 'Delhi', 'Vladivostok', 'Warsaw', 'Berlin', 'Kyiv')
+ sales_nord | r | f | FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki')
+ sales_others | r | f | DEFAULT
+(3 rows)
+
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Helsinki | 1200 | 03-06-2022
+ 9 | May | Helsinki | 1200 | 03-11-2022
+ 10 | Halder | Oslo | 800 | 03-02-2022
+(14 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Helsinki | 1200 | 03-06-2022
+ 9 | May | Helsinki | 1200 | 03-11-2022
+ 10 | Halder | Oslo | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_all;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(10 rows)
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_seqscan = OFF;
+SELECT * FROM sales_all WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+(1 row)
+
+RESET enable_seqscan;
+DROP TABLE sales_list;
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index e9184b5a40..0bd1444767 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_merge.sql b/src/test/regress/sql/partition_merge.sql
new file mode 100644
index 0000000000..bb461e6623
--- /dev/null
+++ b/src/test/regress/sql/partition_merge.sql
@@ -0,0 +1,430 @@
+--
+-- PARTITIONS_MERGE
+-- Tests for "ALTER TABLE ... MERGE PARTITIONS ..." command
+--
+
+CREATE SCHEMA partitions_merge_schema;
+SET search_path = partitions_merge_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_dec2021 PARTITION OF sales_range FOR VALUES FROM ('2021-12-01') TO ('2021-12-31');
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_1 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-15');
+CREATE TABLE sales_apr_2 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-15') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: partition with name "sales_feb2022" already used
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_feb2022) INTO sales_feb_mar_apr2022;
+-- ERROR: cannot merge non-table partition "sales_apr2022"
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+-- ERROR: invalid partitions order, partition "sales_mar2022" can not be merged
+-- (space between sections sales_jan2022 and sales_mar2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022) INTO sales_jan_mar2022;
+-- ERROR: invalid partitions order, partition "sales_jan2022" can not be merged
+-- (space between sections sales_dec2021 and sales_jan2022)
+ALTER TABLE sales_range MERGE PARTITIONS (sales_dec2021, sales_jan2022, sales_feb2022) INTO sales_dec_jan_feb2022;
+
+-- NO ERROR: test for custom partitions order
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_jan2022) INTO sales_jan_feb_mar2022;
+
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Add rows into partitioned table then merge partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT pg_catalog.pg_get_partkeydef('sales_range'::regclass);
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_range MERGE PARTITIONS (sales_feb2022, sales_mar2022, sales_apr2022) INTO sales_feb_mar_apr2022;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb_mar_apr2022' and schemaname = 'partitions_merge_schema';
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb_mar_apr2022;
+SELECT * FROM sales_others;
+
+-- Use indexscan for test indexes
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb_mar_apr2022 where sales_date > '2022-01-01';
+
+RESET enable_seqscan;
+
+DROP TABLE sales_range;
+
+--
+-- Merge some partitions into DEFAULT partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+-- Merge partitions (include DEFAULT partition) into partition with the same
+-- name
+ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_others) INTO sales_others;
+
+select * from sales_others;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_range'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1);
+CREATE TABLE sales_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date MERGE PARTITIONS (sales_jan2022, sales_feb2022) INTO sales_jan_feb2022;
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+DROP TABLE sales_date;
+
+--
+-- Test: merge partitions of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_20 PARTITION OF salesmans FOR VALUES FROM (10) TO (20);
+CREATE TABLE salesmans20_30 PARTITION OF salesmans FOR VALUES FROM (20) TO (30);
+CREATE TABLE salesmans30_40 PARTITION OF salesmans FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_20 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+DROP TABLE salesmans;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: merge partitions with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create partitions with some deleted columns:
+CREATE TABLE salesmans10_20(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+CREATE TABLE salesmans20_30(salesman_id INT PRIMARY KEY, d2 INT, salesman_name VARCHAR(30));
+CREATE TABLE salesmans30_40(salesman_id INT PRIMARY KEY, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_20 VALUES ('dummy value 1', 19, 'Ivanov');
+INSERT INTO salesmans20_30 VALUES (20, 101, 'Smirnoff');
+INSERT INTO salesmans30_40 VALUES (31, now(), 'Popov');
+
+ALTER TABLE salesmans10_20 DROP COLUMN d1;
+ALTER TABLE salesmans20_30 DROP COLUMN d2;
+ALTER TABLE salesmans30_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20);
+ALTER TABLE salesmans ATTACH PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30);
+ALTER TABLE salesmans ATTACH PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans MERGE PARTITIONS (salesmans10_20, salesmans20_30, salesmans30_40) INTO salesmans10_40;
+
+select * from salesmans;
+select * from salesmans01_10;
+select * from salesmans10_40;
+
+DROP TABLE salesmans;
+
+--
+-- Test: merge sub-partitions
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr2022_01_10 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10');
+CREATE TABLE sales_apr2022_10_20 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20');
+CREATE TABLE sales_apr2022_20_30 PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+ALTER TABLE sales_apr2022 MERGE PARTITIONS (sales_apr2022_01_10, sales_apr2022_10_20, sales_apr2022_20_30) INTO sales_apr_all;
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr_all;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+
+CREATE TABLE sales_list2 (LIKE sales_list) PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord2 PARTITION OF sales_list2 FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_others2 PARTITION OF sales_list2 DEFAULT;
+
+
+CREATE TABLE sales_external (LIKE sales_list);
+CREATE TABLE sales_external2 (vch VARCHAR(5));
+
+-- ERROR: partition bound for relation "sales_external" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external) INTO sales_all;
+-- ERROR: partition bound for relation "sales_external2" is null
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_external2) INTO sales_all;
+-- ERROR: relation "sales_nord2" is not a partition of relation "sales_list"
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_nord2, sales_east) INTO sales_all;
+
+DROP TABLE sales_external2;
+DROP TABLE sales_external;
+DROP TABLE sales_list2;
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, MERGE PARTITIONS with data
+--
+CREATE TABLE sales_list
+(salesman_id INT GENERATED ALWAYS AS IDENTITY,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_west PARTITION OF sales_list FOR VALUES IN ('Lisbon', 'New York', 'Madrid');
+CREATE TABLE sales_east PARTITION OF sales_list FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok');
+CREATE TABLE sales_central PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Helsinki', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Oslo', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+ALTER TABLE sales_list MERGE PARTITIONS (sales_west, sales_east, sales_central) INTO sales_all;
+
+-- show partitions with conditions:
+SELECT c.oid::pg_catalog.regclass, c.relkind, inhdetachpending, pg_catalog.pg_get_expr(c.relpartbound, c.oid)
+ FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
+ WHERE c.oid = i.inhrelid AND i.inhparent = 'sales_list'::regclass
+ ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text;
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_all;
+
+-- Use indexscan for test indexes after merge partitions
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_all WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+RESET enable_seqscan;
+
+DROP TABLE sales_list;
+
+--
+DROP SCHEMA partitions_merge_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index f3b8641d76..eadb33e617 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2628,6 +2628,7 @@ SimpleStats
SimpleStringList
SimpleStringListCell
SingleBoundSortItem
+SinglePartitionSpec
Size
SkipPages
SlabBlock
--
2.40.1.windows.1
[text/plain] v31-0002-Implement-ALTER-TABLE-.-SPLIT-PARTITION-.-comman.patch (185.0K, ../../[email protected]/3-v31-0002-Implement-ALTER-TABLE-.-SPLIT-PARTITION-.-comman.patch)
download | inline diff:
From 28e5b5e0257092940c52617d8205ef643692e846 Mon Sep 17 00:00:00 2001
From: Alexander Korotkov <[email protected]>
Date: Tue, 2 Apr 2024 23:27:29 +0300
Subject: [PATCH v31 2/3] Implement ALTER TABLE ... SPLIT PARTITION ... command
This new DDL command splits a single partition into several parititions.
Just like ALTER TABLE ... MERGE PARTITIONS ... command, new patitions are
created using createPartitionTable() function with parent partition as the
template.
This commit comprises quite naive implementation which works in single process
and holds the ACCESS EXCLUSIVE LOCK on the parent table during all the
operations including the tuple routing. This is why this new DDL command
can't be recommended for large partitioned tables under a high load. However,
this implementation come in handy in certain cases even as is.
Also, it could be used as a foundation for future implementations with lesser
locking and possibly parallel.
Discussion: https://postgr.es/m/c73a1746-0cd0-6bdd-6b23-3ae0b7c0c582%40postgrespro.ru
Author: Dmitry Koval
Reviewed-by: Matthias van de Meent, Laurenz Albe, Zhihong Yu, Justin Pryzby
Reviewed-by: Alvaro Herrera, Robert Haas, Stephane Tachoires
---
doc/src/sgml/ddl.sgml | 19 +
doc/src/sgml/ref/alter_table.sgml | 65 +-
src/backend/commands/tablecmds.c | 411 +++++
src/backend/parser/gram.y | 38 +-
src/backend/parser/parse_utilcmd.c | 62 +-
src/backend/partitioning/partbounds.c | 657 ++++++++
src/backend/utils/adt/ruleutils.c | 18 +
src/include/nodes/parsenodes.h | 1 +
src/include/parser/kwlist.h | 1 +
src/include/partitioning/partbounds.h | 5 +
src/include/utils/ruleutils.h | 2 +
.../isolation/expected/partition-split.out | 190 +++
src/test/isolation/isolation_schedule | 1 +
src/test/isolation/specs/partition-split.spec | 54 +
.../test_ddl_deparse/test_ddl_deparse.c | 3 +
src/test/regress/expected/partition_split.out | 1417 +++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/partition_split.sql | 833 ++++++++++
src/tools/pgindent/typedefs.list | 1 +
19 files changed, 3766 insertions(+), 14 deletions(-)
create mode 100644 src/test/isolation/expected/partition-split.out
create mode 100644 src/test/isolation/specs/partition-split.spec
create mode 100644 src/test/regress/expected/partition_split.out
create mode 100644 src/test/regress/sql/partition_split.sql
diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index f9f2778b3d..cd8304ef75 100644
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -4400,6 +4400,25 @@ ALTER TABLE measurement
measurement_y2006m03) INTO measurement_y2006q1;
</programlisting>
</para>
+
+ <para>
+ Similarly to merging multiple table partitions, there is an option for
+ splitting a single partition into multiple using the
+ <link linkend="sql-altertable-split-partition"><command>ALTER TABLE ... SPLIT PARTITION</command></link>.
+ This feature could come in handy when one partition grows too big
+ and needs to be split into multiple. It's important to note that
+ this operation is not supported for hash-partitioned tables and acquires
+ an <literal>ACCESS EXCLUSIVE</literal> lock, which could impact high-load
+ systems due to the lock's restrictive nature. For example, we can split
+ the quarter partition back to monthly partitions:
+<programlisting>
+ALTER TABLE measurement SPLIT PARTITION measurement_y2006q1 INTO
+ (PARTITION measurement_y2006m01 FOR VALUES FROM ('2006-01-01') TO ('2006-02-01'),
+ PARTITION measurement_y2006m02 FOR VALUES FROM ('2006-02-01') TO ('2006-03-01'),
+ PARTITION measurement_y2006m03 FOR VALUES FROM ('2006-03-01') TO ('2006-04-01'));
+</programlisting>
+ </para>
+
</sect3>
<sect3 id="ddl-partitioning-declarative-limitations">
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index e0a98bc538..a170315585 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -37,6 +37,10 @@ ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
ATTACH PARTITION <replaceable class="parameter">partition_name</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
DETACH PARTITION <replaceable class="parameter">partition_name</replaceable> [ CONCURRENTLY | FINALIZE ]
+ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
+ SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO
+ (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT },
+ PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])
ALTER TABLE [ IF EXISTS ] <replaceable class="parameter">name</replaceable>
MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...])
INTO <replaceable class="parameter">partition_name</replaceable>
@@ -1121,6 +1125,44 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
</listitem>
</varlistentry>
+ <varlistentry id="sql-altertable-split-partition">
+ <term><literal>SPLIT PARTITION <replaceable class="parameter">partition_name</replaceable> INTO (PARTITION <replaceable class="parameter">partition_name1</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT }, PARTITION <replaceable class="parameter">partition_name2</replaceable> { FOR VALUES <replaceable class="parameter">partition_bound_spec</replaceable> | DEFAULT } [, ...])</literal></term>
+
+ <listitem>
+ <para>
+ This form splits a single partition of the target table. Hash-partitioning
+ is not supported. Bounds of new partitions should not overlap with new and
+ existing partitions (except <replaceable class="parameter">partition_name</replaceable>).
+ If the split partition is a DEFAULT partition, one of the new partitions must be DEFAULT.
+ In case one of the new partitions or one of existing partitions is DEFAULT,
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have spaces
+ between partitions bounds. If the partitioned table does not have a DEFAULT
+ partition, the DEFAULT partition can be defined as one of the new partitions.
+ </para>
+ <para>
+ In case new partitions do not contain a DEFAULT partition and the partitioned table
+ does not have a DEFAULT partition, the following must be true: sum bounds of
+ new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... should be
+ equal to bound of split partition <replaceable class="parameter">partition_name</replaceable>.
+ One of the new partitions <replaceable class="parameter">partition_name1</replaceable>,
+ <replaceable class="parameter">partition_name2</replaceable>, ... can have
+ the same name as split partition <replaceable class="parameter">partition_name</replaceable>
+ (this is suitable in case of splitting a DEFAULT partition: we split it, but after
+ splitting we have a partition with the same name).
+ Only simple, non-partitioned partition can be split.
+ </para>
+ <note>
+ <para>
+ This command acquires an <literal>ACCESS EXCLUSIVE</literal> lock.
+ This is a significant limitation, which limits the usage of this
+ command with large partitioned tables under a high load.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
<varlistentry id="sql-altertable-merge-partitions">
<term><literal>MERGE PARTITIONS (<replaceable class="parameter">partition_name1</replaceable>, <replaceable class="parameter">partition_name2</replaceable> [, ...]) INTO <replaceable class="parameter">partition_name</replaceable></literal></term>
@@ -1188,7 +1230,8 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
All the forms of ALTER TABLE that act on a single table, except
<literal>RENAME</literal>, <literal>SET SCHEMA</literal>,
<literal>ATTACH PARTITION</literal>, <literal>DETACH PARTITION</literal>,
- and <literal>MERGE PARTITIONS</literal> can be combined into
+ <literal>SPLIT PARTITION</literal>, and <literal>MERGE PARTITIONS</literal>
+ can be combined into
a list of multiple alterations to be applied together. For example, it
is possible to add several columns and/or alter the type of several
columns in a single command. This is particularly useful with large
@@ -1432,7 +1475,7 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<listitem>
<para>
The name of the table to attach as a new partition or to detach from this table,
- or the name of the new merged partition.
+ or the name of split partition, or the name of the new merged partition.
</para>
</listitem>
</varlistentry>
@@ -1848,6 +1891,24 @@ ALTER TABLE measurement
DETACH PARTITION measurement_y2015m12;
</programlisting></para>
+ <para>
+ To split a single partition of the range-partitioned table:
+<programlisting>
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2023 INTO
+ (PARTITION sales_feb2023 FOR VALUES FROM ('2023-02-01') TO ('2023-03-01'),
+ PARTITION sales_mar2023 FOR VALUES FROM ('2023-03-01') TO ('2023-04-01'),
+ PARTITION sales_apr2023 FOR VALUES FROM ('2023-04-01') TO ('2023-05-01'));
+</programlisting></para>
+
+ <para>
+ To split a single partition of the list-partitioned table:
+<programlisting>
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+</programlisting></para>
+
<para>
To merge several partitions into one partition of the target table:
<programlisting>
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 05e86de8eb..582890a302 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -670,6 +670,9 @@ static void ATDetachCheckNoForeignKeyRefs(Relation partition);
static char GetAttributeCompression(Oid atttypid, const char *compression);
static char GetAttributeStorage(Oid atttypid, const char *storagemode);
+static void ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab,
+ Relation rel, PartitionCmd *cmd,
+ AlterTableUtilityContext *context);
static void ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
PartitionCmd *cmd, AlterTableUtilityContext *context);
@@ -4740,6 +4743,10 @@ AlterTableGetLockLevel(List *cmds)
cmd_lockmode = ShareUpdateExclusiveLock;
break;
+ case AT_SplitPartition:
+ cmd_lockmode = AccessExclusiveLock;
+ break;
+
case AT_MergePartitions:
cmd_lockmode = AccessExclusiveLock;
break;
@@ -5163,6 +5170,11 @@ ATPrepCmd(List **wqueue, Relation rel, AlterTableCmd *cmd,
/* No command-specific prep needed */
pass = AT_PASS_MISC;
break;
+ case AT_SplitPartition:
+ ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
+ /* No command-specific prep needed */
+ pass = AT_PASS_MISC;
+ break;
case AT_MergePartitions:
ATSimplePermissions(cmd->subtype, rel, ATT_TABLE);
/* No command-specific prep needed */
@@ -5565,6 +5577,14 @@ ATExecCmd(List **wqueue, AlteredTableInfo *tab,
case AT_DetachPartitionFinalize:
address = ATExecDetachPartitionFinalize(rel, ((PartitionCmd *) cmd->def)->name);
break;
+ case AT_SplitPartition:
+ cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
+ cur_pass, context);
+ Assert(cmd != NULL);
+ Assert(rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE);
+ ATExecSplitPartition(wqueue, tab, rel, (PartitionCmd *) cmd->def,
+ context);
+ break;
case AT_MergePartitions:
cmd = ATParseTransformCmd(wqueue, tab, rel, cmd, false, lockmode,
cur_pass, context);
@@ -6567,6 +6587,8 @@ alter_table_type_to_string(AlterTableType cmdtype)
return "DETACH PARTITION";
case AT_DetachPartitionFinalize:
return "DETACH PARTITION ... FINALIZE";
+ case AT_SplitPartition:
+ return "SPLIT PARTITION";
case AT_MergePartitions:
return "MERGE PARTITIONS";
case AT_AddIdentity:
@@ -20852,6 +20874,260 @@ GetAttributeStorage(Oid atttypid, const char *storagemode)
return cstorage;
}
+/*
+ * Struct with context of new partition for insert rows from splited partition
+ */
+typedef struct SplitPartitionContext
+{
+ ExprState *partqualstate; /* expression for check slot for partition
+ * (NULL for DEFAULT partition) */
+ BulkInsertState bistate; /* state of bulk inserts for partition */
+ TupleTableSlot *dstslot; /* slot for insert row into partition */
+ Relation partRel; /* relation for partition */
+} SplitPartitionContext;
+
+
+/*
+ * createSplitPartitionContext: create context for partition and fill it
+ */
+static SplitPartitionContext *
+createSplitPartitionContext(Relation partRel)
+{
+ SplitPartitionContext *pc;
+
+ pc = (SplitPartitionContext *) palloc0(sizeof(SplitPartitionContext));
+ pc->partRel = partRel;
+
+ /*
+ * Prepare a BulkInsertState for table_tuple_insert. The FSM is empty, so
+ * don't bother using it.
+ */
+ pc->bistate = GetBulkInsertState();
+
+ /* Create tuple slot for new partition. */
+ pc->dstslot = MakeSingleTupleTableSlot(RelationGetDescr(pc->partRel),
+ table_slot_callbacks(pc->partRel));
+ ExecStoreAllNullTuple(pc->dstslot);
+
+ return pc;
+}
+
+/*
+ * deleteSplitPartitionContext: delete context for partition
+ */
+static void
+deleteSplitPartitionContext(SplitPartitionContext *pc, int ti_options)
+{
+ ExecDropSingleTupleTableSlot(pc->dstslot);
+ FreeBulkInsertState(pc->bistate);
+
+ table_finish_bulk_insert(pc->partRel, ti_options);
+
+ pfree(pc);
+}
+
+/*
+ * moveSplitTableRows: scan split partition (splitRel) of partitioned table
+ * (rel) and move rows into new partitions.
+ *
+ * New partitions description:
+ * partlist: list of pointers to SinglePartitionSpec structures.
+ * newPartRels: list of Relation's.
+ * defaultPartOid: oid of DEFAULT partition, for table rel.
+ */
+static void
+moveSplitTableRows(Relation rel, Relation splitRel, List *partlist, List *newPartRels, Oid defaultPartOid)
+{
+ /* The FSM is empty, so don't bother using it. */
+ int ti_options = TABLE_INSERT_SKIP_FSM;
+ CommandId mycid;
+ EState *estate;
+ ListCell *listptr,
+ *listptr2;
+ TupleTableSlot *srcslot;
+ ExprContext *econtext;
+ TableScanDesc scan;
+ Snapshot snapshot;
+ MemoryContext oldCxt;
+ List *partContexts = NIL;
+ TupleConversionMap *tuple_map;
+ SplitPartitionContext *defaultPartCtx = NULL,
+ *pc;
+ bool isOldDefaultPart = false;
+
+ mycid = GetCurrentCommandId(true);
+
+ estate = CreateExecutorState();
+
+ forboth(listptr, partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ pc = createSplitPartitionContext((Relation) lfirst(listptr2));
+
+ if (sps->bound->is_default)
+ {
+ /* We should not create constraint for detached DEFAULT partition. */
+ defaultPartCtx = pc;
+ }
+ else
+ {
+ List *partConstraint;
+
+ /* Build expression execution states for partition check quals. */
+ partConstraint = get_qual_from_partbound(rel, sps->bound);
+ partConstraint =
+ (List *) eval_const_expressions(NULL,
+ (Node *) partConstraint);
+ /* Make boolean expression for ExecCheck(). */
+ partConstraint = list_make1(make_ands_explicit(partConstraint));
+
+ /*
+ * Map the vars in the constraint expression from rel's attnos to
+ * splitRel's.
+ */
+ partConstraint = map_partition_varattnos(partConstraint,
+ 1, splitRel, rel);
+
+ pc->partqualstate =
+ ExecPrepareExpr((Expr *) linitial(partConstraint), estate);
+ Assert(pc->partqualstate != NULL);
+ }
+
+ /* Store partition context into list. */
+ partContexts = lappend(partContexts, pc);
+ }
+
+ /*
+ * Create partition context for DEFAULT partition. We can insert values
+ * into this partition in case spaces with values between new partitions.
+ */
+ if (!defaultPartCtx && OidIsValid(defaultPartOid))
+ {
+ /* Indicate that we allocate context for old DEFAULT partition */
+ isOldDefaultPart = true;
+ defaultPartCtx = createSplitPartitionContext(table_open(defaultPartOid, AccessExclusiveLock));
+ }
+
+ econtext = GetPerTupleExprContext(estate);
+
+ /* Create necessary tuple slot. */
+ srcslot = MakeSingleTupleTableSlot(RelationGetDescr(splitRel),
+ table_slot_callbacks(splitRel));
+
+ /*
+ * Map computing for moving attributes of split partition to new partition
+ * (for first new partition but other new partitions can use the same
+ * map).
+ */
+ pc = (SplitPartitionContext *) lfirst(list_head(partContexts));
+ tuple_map = convert_tuples_by_name(RelationGetDescr(splitRel),
+ RelationGetDescr(pc->partRel));
+
+ /* Scan through the rows. */
+ snapshot = RegisterSnapshot(GetLatestSnapshot());
+ scan = table_beginscan(splitRel, snapshot, 0, NULL);
+
+ /*
+ * Switch to per-tuple memory context and reset it for each tuple
+ * produced, so we don't leak memory.
+ */
+ oldCxt = MemoryContextSwitchTo(GetPerTupleMemoryContext(estate));
+
+ while (table_scan_getnextslot(scan, ForwardScanDirection, srcslot))
+ {
+ bool found = false;
+ bool insert_indexes;
+ TupleTableSlot *insertslot;
+
+ /* Extract data from old tuple. */
+ slot_getallattrs(srcslot);
+
+ econtext->ecxt_scantuple = srcslot;
+
+ /* Search partition for current slot srcslot. */
+ foreach(listptr, partContexts)
+ {
+ pc = (SplitPartitionContext *) lfirst(listptr);
+
+ if (pc->partqualstate /* skip DEFAULT partition */ &&
+ ExecCheck(pc->partqualstate, econtext))
+ {
+ found = true;
+ break;
+ }
+ ResetExprContext(econtext);
+ }
+ if (!found)
+ {
+ /* Use DEFAULT partition if it exists. */
+ if (defaultPartCtx)
+ pc = defaultPartCtx;
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_CHECK_VIOLATION),
+ errmsg("can not find partition for split partition row"),
+ errtable(splitRel)));
+ }
+
+ if (tuple_map)
+ {
+ /* Need to use map for copy attributes. */
+ insertslot = execute_attr_map_slot(tuple_map->attrMap, srcslot, pc->dstslot);
+ }
+ else
+ {
+ /* Copy attributes directly. */
+ insertslot = pc->dstslot;
+
+ ExecClearTuple(insertslot);
+
+ memcpy(insertslot->tts_values, srcslot->tts_values,
+ sizeof(Datum) * srcslot->tts_nvalid);
+ memcpy(insertslot->tts_isnull, srcslot->tts_isnull,
+ sizeof(bool) * srcslot->tts_nvalid);
+
+ ExecStoreVirtualTuple(insertslot);
+ }
+
+ /*
+ * Write the tuple out to the new relation. We ignore the
+ * 'insert_indexes' flag since newPartRel has no indexes anyway.
+ */
+ (void) table_tuple_insert(pc->partRel, insertslot, mycid,
+ ti_options, pc->bistate, &insert_indexes);
+
+ ResetExprContext(econtext);
+
+ CHECK_FOR_INTERRUPTS();
+ }
+
+ MemoryContextSwitchTo(oldCxt);
+
+ table_endscan(scan);
+ UnregisterSnapshot(snapshot);
+
+ if (tuple_map)
+ free_conversion_map(tuple_map);
+
+ ExecDropSingleTupleTableSlot(srcslot);
+
+ FreeExecutorState(estate);
+
+ foreach(listptr, partContexts)
+ deleteSplitPartitionContext((SplitPartitionContext *) lfirst(listptr), ti_options);
+
+ /* Need to close table and free buffers for DEFAULT partition. */
+ if (isOldDefaultPart)
+ {
+ Relation defaultPartRel = defaultPartCtx->partRel;
+
+ deleteSplitPartitionContext(defaultPartCtx, ti_options);
+ /* Keep the lock until commit. */
+ table_close(defaultPartRel, NoLock);
+ }
+}
+
/*
* createPartitionTable: create table for new partition with given name
* (newPartName) like table (modelRelName)
@@ -20906,6 +21182,141 @@ createPartitionTable(RangeVar *newPartName, RangeVar *modelRelName,
NULL);
}
+/*
+ * ALTER TABLE <name> SPLIT PARTITION <partition-name> INTO <partition-list>
+ */
+static void
+ATExecSplitPartition(List **wqueue, AlteredTableInfo *tab, Relation rel,
+ PartitionCmd *cmd, AlterTableUtilityContext *context)
+{
+ Relation splitRel;
+ Oid splitRelOid;
+ char relname[NAMEDATALEN];
+ Oid namespaceId;
+ ListCell *listptr,
+ *listptr2;
+ bool isSameName = false;
+ char tmpRelName[NAMEDATALEN];
+ List *newPartRels = NIL;
+ ObjectAddress object;
+ RangeVar *parentName;
+ Oid defaultPartOid;
+
+ defaultPartOid = get_default_oid_from_partdesc(RelationGetPartitionDesc(rel, true));
+
+ /*
+ * We are going to detach and remove this partition: need to use exclusive
+ * lock for prevent DML-queries to the partition.
+ */
+ splitRel = table_openrv(cmd->name, AccessExclusiveLock);
+
+ if (splitRel->rd_rel->relkind != RELKIND_RELATION)
+ ereport(ERROR,
+ (errcode(ERRCODE_WRONG_OBJECT_TYPE),
+ errmsg("cannot split non-table partition \"%s\"",
+ RelationGetRelationName(splitRel))));
+
+ splitRelOid = RelationGetRelid(splitRel);
+
+ /* Check descriptions of new partitions. */
+ foreach(listptr, cmd->partlist)
+ {
+ Oid existing_relid;
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ strlcpy(relname, sps->name->relname, NAMEDATALEN);
+
+ /*
+ * Look up the namespace in which we are supposed to create the
+ * partition, check we have permission to create there, lock it
+ * against concurrent drop, and mark stmt->relation as
+ * RELPERSISTENCE_TEMP if a temporary namespace is selected.
+ */
+ namespaceId =
+ RangeVarGetAndCheckCreationNamespace(sps->name, NoLock, NULL);
+
+ /*
+ * This would fail later on anyway, if the relation already exists.
+ * But by catching it here we can emit a nicer error message.
+ */
+ existing_relid = get_relname_relid(relname, namespaceId);
+ if (existing_relid == splitRelOid && !isSameName)
+ /* One new partition can have the same name as split partition. */
+ isSameName = true;
+ else if (existing_relid != InvalidOid)
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("relation \"%s\" already exists", relname)));
+ }
+
+ /* Detach split partition. */
+ RemoveInheritance(splitRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, splitRel, false, defaultPartOid);
+
+ /*
+ * If new partition has the same name as split partition then we should
+ * rename split partition for reuse name.
+ */
+ if (isSameName)
+ {
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible for rename.
+ */
+ CommandCounterIncrement();
+ /* Rename partition. */
+ sprintf(tmpRelName, "split-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
+ RenameRelationInternal(splitRelOid, tmpRelName, false, false);
+
+ /*
+ * We must bump the command counter to make the split partition tuple
+ * visible after rename.
+ */
+ CommandCounterIncrement();
+ }
+
+ /* Create new partitions (like split partition), without indexes. */
+ parentName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1);
+ foreach(listptr, cmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel;
+
+ createPartitionTable(sps->name, parentName, context);
+
+ /* Open the new partition and acquire exclusive lock on it. */
+ newPartRel = table_openrv(sps->name, AccessExclusiveLock);
+
+ newPartRels = lappend(newPartRels, newPartRel);
+ }
+
+ /* Copy data from split partition to new partitions. */
+ moveSplitTableRows(rel, splitRel, cmd->partlist, newPartRels, defaultPartOid);
+ /* Keep the lock until commit. */
+ table_close(splitRel, NoLock);
+
+ /* Attach new partitions to partitioned table. */
+ forboth(listptr, cmd->partlist, listptr2, newPartRels)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+ Relation newPartRel = (Relation) lfirst(listptr2);
+
+ /* wqueue = NULL: verification for each cloned constraint is not need. */
+ attachPartitionTable(NULL, rel, newPartRel, sps->bound);
+ /* Keep the lock until commit. */
+ table_close(newPartRel, NoLock);
+ }
+
+ /* Drop split partition. */
+ object.classId = RelationRelationId;
+ object.objectId = splitRelOid;
+ object.objectSubId = 0;
+ /* Probably DROP_CASCADE is not needed. */
+ performDeletion(&object, DROP_RESTRICT, 0);
+}
+
/*
* moveMergedTablesRows: scan partitions to be merged (mergingPartitionsList)
* of the partitioned table (rel) and move rows into the new partition
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 1fcdb25142..ee7a89045c 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -269,6 +269,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
PartitionElem *partelem;
PartitionSpec *partspec;
PartitionBoundSpec *partboundspec;
+ SinglePartitionSpec *singlepartspec;
RoleSpec *rolespec;
PublicationObjSpec *publicationobjectspec;
struct SelectLimit *selectlimit;
@@ -646,6 +647,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
%type <partelem> part_elem
%type <list> part_params
%type <partboundspec> PartitionBoundSpec
+%type <singlepartspec> SinglePartitionSpec
+%type <list> partitions_list
%type <list> hash_partbound
%type <defelt> hash_partbound_elem
@@ -777,7 +780,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
SAVEPOINT SCALAR SCHEMA SCHEMAS SCROLL SEARCH SECOND_P SECURITY SELECT
SEQUENCE SEQUENCES
SERIALIZABLE SERVER SESSION SESSION_USER SET SETS SETOF SHARE SHOW
- SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SOURCE SQL_P STABLE STANDALONE_P
+ SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SPLIT SOURCE SQL_P STABLE STANDALONE_P
START STATEMENT STATISTICS STDIN STDOUT STORAGE STORED STRICT_P STRING_P STRIP_P
SUBSCRIPTION SUBSTRING SUPPORT SYMMETRIC SYSID SYSTEM_P SYSTEM_USER
@@ -2307,6 +2310,23 @@ alter_table_cmds:
| alter_table_cmds ',' alter_table_cmd { $$ = lappend($1, $3); }
;
+partitions_list:
+ SinglePartitionSpec { $$ = list_make1($1); }
+ | partitions_list ',' SinglePartitionSpec { $$ = lappend($1, $3); }
+ ;
+
+SinglePartitionSpec:
+ PARTITION qualified_name PartitionBoundSpec
+ {
+ SinglePartitionSpec *n = makeNode(SinglePartitionSpec);
+
+ n->name = $2;
+ n->bound = $3;
+
+ $$ = n;
+ }
+ ;
+
partition_cmd:
/* ALTER TABLE <name> ATTACH PARTITION <table_name> FOR VALUES */
ATTACH PARTITION qualified_name PartitionBoundSpec
@@ -2351,6 +2371,20 @@ partition_cmd:
n->def = (Node *) cmd;
$$ = (Node *) n;
}
+ /* ALTER TABLE <name> SPLIT PARTITION <partition_name> INTO () */
+ | SPLIT PARTITION qualified_name INTO '(' partitions_list ')'
+ {
+ AlterTableCmd *n = makeNode(AlterTableCmd);
+ PartitionCmd *cmd = makeNode(PartitionCmd);
+
+ n->subtype = AT_SplitPartition;
+ cmd->name = $3;
+ cmd->bound = NULL;
+ cmd->partlist = $6;
+ cmd->concurrent = false;
+ n->def = (Node *) cmd;
+ $$ = (Node *) n;
+ }
/* ALTER TABLE <name> MERGE PARTITIONS () INTO <partition_name> */
| MERGE PARTITIONS '(' qualified_name_list ')' INTO qualified_name
{
@@ -17756,6 +17790,7 @@ unreserved_keyword:
| SKIP
| SNAPSHOT
| SOURCE
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
@@ -18393,6 +18428,7 @@ bare_label_keyword:
| SNAPSHOT
| SOME
| SOURCE
+ | SPLIT
| SQL_P
| STABLE
| STANDALONE_P
diff --git a/src/backend/parser/parse_utilcmd.c b/src/backend/parser/parse_utilcmd.c
index 48a23c7ca4..88a4a41186 100644
--- a/src/backend/parser/parse_utilcmd.c
+++ b/src/backend/parser/parse_utilcmd.c
@@ -136,7 +136,7 @@ static void transformConstraintAttrs(CreateStmtContext *cxt,
List *constraintList);
static void transformColumnType(CreateStmtContext *cxt, ColumnDef *column);
static void setSchemaName(const char *context_schema, char **stmt_schema_name);
-static void transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd);
+static void transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound);
static List *transformPartitionRangeBounds(ParseState *pstate, List *blist,
Relation parent);
static void validateInfiniteBounds(ParseState *pstate, List *blist);
@@ -3415,6 +3415,43 @@ transformRuleStmt(RuleStmt *stmt, const char *queryString,
}
+/*
+ * transformPartitionCmdForSplit
+ * Analyze the ALTER TABLLE ... SPLIT PARTITION command
+ *
+ * For each new partition sps->bound is set to the transformed value of bound.
+ * Does checks for bounds of new partitions.
+ */
+static void
+transformPartitionCmdForSplit(CreateStmtContext *cxt, PartitionCmd *partcmd)
+{
+ Relation parent = cxt->rel;
+ Oid splitPartOid;
+ ListCell *listptr;
+
+ if (parent->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("\"%s\" is not a partitioned table", RelationGetRelationName(parent))));
+
+ /* Transform partition bounds for all partitions in the list: */
+ foreach(listptr, partcmd->partlist)
+ {
+ SinglePartitionSpec *sps = (SinglePartitionSpec *) lfirst(listptr);
+
+ cxt->partbound = NULL;
+ transformPartitionCmd(cxt, sps->bound);
+ /* Assign transformed value of the partition bound. */
+ sps->bound = cxt->partbound;
+ }
+
+ splitPartOid = RangeVarGetRelid(partcmd->name, NoLock, false);
+
+ /* Then we should check partitions with transformed bounds. */
+ check_partitions_for_split(parent, splitPartOid, partcmd->name, partcmd->partlist, cxt->pstate);
+}
+
+
/*
* transformPartitionCmdForMerge
* Analyze the ALTER TABLLE ... MERGE PARTITIONS command
@@ -3751,7 +3788,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
- transformPartitionCmd(&cxt, partcmd);
+ transformPartitionCmd(&cxt, partcmd->bound);
/* assign transformed value of the partition bound */
partcmd->bound = cxt.partbound;
}
@@ -3759,6 +3796,7 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
newcmds = lappend(newcmds, cmd);
break;
+ case AT_SplitPartition:
case AT_MergePartitions:
{
PartitionCmd *partcmd = (PartitionCmd *) cmd->def;
@@ -3767,7 +3805,11 @@ transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("list of new partitions should contains at least two items")));
- transformPartitionCmdForMerge(&cxt, partcmd);
+
+ if (cmd->subtype == AT_SplitPartition)
+ transformPartitionCmdForSplit(&cxt, partcmd);
+ else
+ transformPartitionCmdForMerge(&cxt, partcmd);
newcmds = lappend(newcmds, cmd);
break;
}
@@ -4172,13 +4214,13 @@ setSchemaName(const char *context_schema, char **stmt_schema_name)
/*
* transformPartitionCmd
- * Analyze the ATTACH/DETACH PARTITION command
+ * Analyze the ATTACH/DETACH/SPLIT PARTITION command
*
- * In case of the ATTACH PARTITION command, cxt->partbound is set to the
- * transformed value of cmd->bound.
+ * In case of the ATTACH/SPLIT PARTITION command, cxt->partbound is set to the
+ * transformed value of bound.
*/
static void
-transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
+transformPartitionCmd(CreateStmtContext *cxt, PartitionBoundSpec *bound)
{
Relation parentRel = cxt->rel;
@@ -4187,9 +4229,9 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
case RELKIND_PARTITIONED_TABLE:
/* transform the partition bound, if any */
Assert(RelationGetPartitionKey(parentRel) != NULL);
- if (cmd->bound != NULL)
+ if (bound != NULL)
cxt->partbound = transformPartitionBound(cxt->pstate, parentRel,
- cmd->bound);
+ bound);
break;
case RELKIND_PARTITIONED_INDEX:
@@ -4197,7 +4239,7 @@ transformPartitionCmd(CreateStmtContext *cxt, PartitionCmd *cmd)
* A partitioned index cannot have a partition bound set. ALTER
* INDEX prevents that with its grammar, but not ALTER TABLE.
*/
- if (cmd->bound != NULL)
+ if (bound != NULL)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("\"%s\" is not a partitioned table",
diff --git a/src/backend/partitioning/partbounds.c b/src/backend/partitioning/partbounds.c
index 9ed80d721e..c36e26ba4b 100644
--- a/src/backend/partitioning/partbounds.c
+++ b/src/backend/partitioning/partbounds.c
@@ -5040,10 +5040,69 @@ check_two_partitions_bounds_range(Relation parent,
}
}
+/*
+ * check_partitions_not_overlap_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * This is a helper function for check_partitions_for_split().
+ * Checks that the values of the new partitions do not overlap.
+ *
+ * parent: partitioned table
+ * parts: array of SinglePartitionSpec structs with info about split partitions
+ * nparts: size of array "parts"
+ */
+static void
+check_partitions_not_overlap_list(Relation parent,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key PG_USED_FOR_ASSERTS_ONLY = RelationGetPartitionKey(parent);
+ int overlap_location = -1;
+ int i,
+ j;
+ SinglePartitionSpec *sps1,
+ *sps2;
+ List *overlap;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ for (i = 0; i < nparts; i++)
+ {
+ sps1 = parts[i];
+
+ for (j = i + 1; j < nparts; j++)
+ {
+ sps2 = parts[j];
+
+ /*
+ * Calculate intersection between values of two partitions.
+ */
+ overlap = list_intersection(sps1->bound->listdatums,
+ sps2->bound->listdatums);
+ if (list_length(overlap) > 0)
+ {
+ Const *val = (Const *) lfirst(list_head(overlap));
+
+ overlap_location = val->location;
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another new partition \"%s\"",
+ sps1->name->relname, sps2->name->relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ }
+ }
+}
+
/*
* get_partition_bound_spec
*
* Returns description of partition with Oid "partOid" and name "name".
+ *
+ * partOid: partition Oid
+ * name: partition name
*/
static PartitionBoundSpec *
get_partition_bound_spec(Oid partOid, RangeVar *name)
@@ -5076,6 +5135,604 @@ get_partition_bound_spec(Oid partOid, RangeVar *name)
return boundspec;
}
+/*
+ * check_partition_bounds_for_split_range
+ *
+ * (function for BY RANGE partitioning)
+ *
+ * Checks that bounds of new partition "spec" is inside bounds of split
+ * partition (with Oid splitPartOid). If first=true (this means that "spec" is
+ * the first of new partitions) then lower bound of "spec" should be equal (or
+ * greater than or equal in case defaultPart=true) to lower bound of split
+ * partition. If last=true (this means that "spec" is the last of new
+ * partitions) then upper bound of of "spec" should be equal (or less than or
+ * equal in case defaultPart=true) to upper bound of split partition.
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * first: true in case new partition "spec" is first of new partitions
+ * last: true in case new partition "spec" is last of new partitions
+ * defaultPart: true in case partitioned table has DEFAULT partition
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_range(Relation parent,
+ char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ bool first,
+ bool last,
+ bool defaultPart,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionRangeBound *lower,
+ *upper;
+ int cmpval;
+
+ Assert(key->strategy == PARTITION_STRATEGY_RANGE);
+ Assert(spec->strategy == PARTITION_STRATEGY_RANGE);
+
+ lower = make_one_partition_rbound(key, -1, spec->lowerdatums, true);
+ upper = make_one_partition_rbound(key, -1, spec->upperdatums, false);
+
+ /*
+ * First check if the resulting range would be empty with specified lower
+ * and upper bounds. partition_rbound_cmp cannot return zero here, since
+ * the lower-bound flags are different.
+ */
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, upper);
+ Assert(cmpval != 0);
+ if (cmpval > 0)
+ {
+ /* Point to problematic key in the lower datums list. */
+ PartitionRangeDatum *datum = list_nth(spec->lowerdatums, cmpval - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("empty range bound specified for partition \"%s\"",
+ relname),
+ errdetail("Specified lower bound %s is greater than or equal to upper bound %s.",
+ get_range_partbound_string(spec->lowerdatums),
+ get_range_partbound_string(spec->upperdatums)),
+ parser_errposition(pstate, datum->location)));
+ }
+
+ /* Need to check first and last partitions (from set of new partitions) */
+ if (first || last)
+ {
+ PartitionBoundSpec *split_spec = get_partition_bound_spec(splitPartOid, splitPartName);
+ bool overlap = false;
+
+ if (first)
+ {
+ PartitionRangeBound *split_lower;
+
+ split_lower = make_one_partition_rbound(key, -1, split_spec->lowerdatums, true);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ lower->datums, lower->kind,
+ true, split_lower);
+
+ /*
+ * Lower bound of "spec" should be equal (or greater than or equal
+ * in case defaultPart=true) to lower bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval < 0))
+ overlap = true;
+ }
+ else
+ {
+ PartitionRangeBound *split_upper;
+
+ split_upper = make_one_partition_rbound(key, -1, split_spec->upperdatums, false);
+
+ cmpval = partition_rbound_cmp(key->partnatts,
+ key->partsupfunc,
+ key->partcollation,
+ upper->datums, upper->kind,
+ false, split_upper);
+
+ /*
+ * Upper bound of of "spec" should be equal (or less than or equal
+ * in case defaultPart=true) to upper bound of split partition.
+ */
+ if ((!defaultPart && cmpval) || (defaultPart && cmpval > 0))
+ overlap = true;
+ }
+
+ if (overlap)
+ {
+ PartitionRangeDatum *datum;
+
+ datum = list_nth(first ? spec->lowerdatums : spec->upperdatums, abs(cmpval) - 1);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("%s bound of partition \"%s\" is %s %s bound of split partition",
+ first ? "lower" : "upper",
+ relname,
+ defaultPart ? (first ? "less than" : "greater than") : "not equals to",
+ first ? "lower" : "upper"),
+ parser_errposition(pstate, datum->location)));
+ }
+ }
+}
+
+/*
+ * check_partition_bounds_for_split_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that bounds of new partition is inside bounds of split partition
+ * (with Oid splitPartOid).
+ *
+ * parent: partitioned table
+ * relname: name of the new partition
+ * spec: bounds specification of the new partition
+ * splitPartOid: split partition Oid
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_partition_bounds_for_split_list(Relation parent, char *relname,
+ PartitionBoundSpec *spec,
+ Oid splitPartOid,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int with = -1;
+ bool overlap = false;
+ int overlap_location = -1;
+ ListCell *cell;
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+ Assert(spec->strategy == PARTITION_STRATEGY_LIST);
+ Assert(boundinfo && boundinfo->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Search each value of new partition "spec" in existing partitions. All
+ * of them should be in split partition (with Oid splitPartOid).
+ */
+ foreach(cell, spec->listdatums)
+ {
+ Const *val = lfirst_node(Const, cell);
+
+ overlap_location = val->location;
+ if (!val->constisnull)
+ {
+ int offset;
+ bool equal;
+
+ offset = partition_list_bsearch(&key->partsupfunc[0],
+ key->partcollation,
+ boundinfo,
+ val->constvalue,
+ &equal);
+ if (offset >= 0 && equal)
+ {
+ with = boundinfo->indexes[offset];
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have this value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+ else if (partition_bound_accepts_nulls(boundinfo))
+ {
+ with = boundinfo->null_index;
+ if (partdesc->oids[with] != splitPartOid)
+ {
+ overlap = true;
+ break;
+ }
+ }
+ else
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" cannot have NULL value because split partition does not have",
+ relname),
+ parser_errposition(pstate, overlap_location)));
+ }
+
+ if (overlap)
+ {
+ Assert(with >= 0);
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition \"%s\" would overlap with another (not split) partition \"%s\"",
+ relname, get_rel_name(partdesc->oids[with])),
+ parser_errposition(pstate, overlap_location)));
+ }
+}
+
+/*
+ * find_value_in_new_partitions_list
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Function returns true in case any of new partitions contains value "value".
+ *
+ * partsupfunc: information about comparison function associated with the partition key
+ * partcollation: partitioning collation
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * value: the value that we are looking for
+ * isnull: true if the value that we are looking for is NULL
+ */
+static bool
+find_value_in_new_partitions_list(FmgrInfo *partsupfunc,
+ Oid *partcollation,
+ SinglePartitionSpec **parts,
+ int nparts,
+ Datum value,
+ bool isnull)
+{
+ ListCell *valptr;
+ int i;
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = parts[i];
+
+ foreach(valptr, sps->bound->listdatums)
+ {
+ Const *val = lfirst_node(Const, valptr);
+
+ if (isnull && val->constisnull)
+ return true;
+
+ if (!isnull && !val->constisnull)
+ {
+ if (DatumGetInt32(FunctionCall2Coll(&partsupfunc[0],
+ partcollation[0],
+ val->constvalue,
+ value)) == 0)
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+/*
+ * check_parent_values_in_new_partitions
+ *
+ * (function for BY LIST partitioning)
+ *
+ * Checks that all values of split partition (with Oid partOid) contains in new
+ * partitions.
+ *
+ * parent: partitioned table
+ * partOid: split partition Oid
+ * parts: pointer to array with new partitions descriptions
+ * nparts: number of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+static void
+check_parent_values_in_new_partitions(Relation parent,
+ Oid partOid,
+ SinglePartitionSpec **parts,
+ int nparts,
+ ParseState *pstate)
+{
+ PartitionKey key = RelationGetPartitionKey(parent);
+ PartitionDesc partdesc = RelationGetPartitionDesc(parent, false);
+ PartitionBoundInfo boundinfo = partdesc->boundinfo;
+ int i;
+ bool found = true;
+ bool searchNull = false;
+ Datum datum = PointerGetDatum(NULL);
+
+ Assert(key->strategy == PARTITION_STRATEGY_LIST);
+
+ /*
+ * Special processing for NULL value. Search NULL-value if it contains
+ * split partition (partOid).
+ */
+ if (partition_bound_accepts_nulls(boundinfo) &&
+ partdesc->oids[boundinfo->null_index] == partOid)
+ {
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, true))
+ {
+ found = false;
+ searchNull = true;
+ }
+ }
+
+ /*
+ * Search all values of split partition with partOid in PartitionDesc of
+ * partitionde table.
+ */
+ for (i = 0; i < boundinfo->ndatums; i++)
+ {
+ if (partdesc->oids[boundinfo->indexes[i]] == partOid)
+ {
+ /* We found value that split partition contains. */
+ datum = boundinfo->datums[i][0];
+ if (!find_value_in_new_partitions_list(&key->partsupfunc[0],
+ key->partcollation, parts, nparts, datum, false))
+ {
+ found = false;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ {
+ Const *notFoundVal;
+
+ if (!searchNull)
+ /* Make Const for get string representation of not found value. */
+ notFoundVal = makeConst(key->parttypid[0],
+ key->parttypmod[0],
+ key->parttypcoll[0],
+ key->parttyplen[0],
+ datum,
+ false, /* isnull */
+ key->parttypbyval[0]);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partitions not have value %s but split partition has",
+ searchNull ? "NULL" : get_list_partvalue_string(notFoundVal))));
+ }
+}
+
+/*
+ * check_partitions_for_split
+ *
+ * Checks new partitions for SPLIT PARTITIONS command:
+ * 1. DEFAULT partition should be one.
+ * 2. New partitions should have different names
+ * (with existing partitions too).
+ * 3. Bounds of new partitions should not overlap with new and existing
+ * partitions.
+ * 4. In case split partition is DEFAULT partition, one of new partitions
+ * should be DEFAULT.
+ * 5. In case new partitions or existing partitions contains DEFAULT
+ * partition, new partitions can have any bounds inside split
+ * partition bound (can be spaces between partitions bounds).
+ * 6. In case partitioned table does not have DEFAULT partition, DEFAULT
+ * partition can be defined as one of new partition.
+ * 7. In case new partitions not contains DEFAULT partition and
+ * partitioned table does not have DEFAULT partition the following
+ * should be true: sum bounds of new partitions should be equal
+ * to bound of split partition.
+ *
+ * parent: partitioned table
+ * splitPartOid: split partition Oid
+ * splitPartName: split partition name
+ * list: list of new partitions
+ * pstate: pointer to ParseState struct for determine error position
+ */
+void
+check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate)
+{
+ PartitionKey key;
+ char strategy;
+ Oid defaultPartOid;
+ bool isSplitPartDefault;
+ bool existsDefaultPart;
+ ListCell *listptr;
+ int default_index = -1;
+ int i,
+ j;
+ SinglePartitionSpec **new_parts;
+ SinglePartitionSpec *spsPrev = NULL;
+ int nparts = 0;
+
+ key = RelationGetPartitionKey(parent);
+ strategy = get_partition_strategy(key);
+
+ switch (strategy)
+ {
+ case PARTITION_STRATEGY_LIST:
+ case PARTITION_STRATEGY_RANGE:
+ {
+ /*
+ * Make array new_parts with new partitions except DEFAULT
+ * partition.
+ */
+ new_parts = (SinglePartitionSpec **)
+ palloc0(list_length(partlist) * sizeof(SinglePartitionSpec *));
+ i = 0;
+ foreach(listptr, partlist)
+ {
+ SinglePartitionSpec *sps =
+ (SinglePartitionSpec *) lfirst(listptr);
+
+ if (sps->bound->is_default)
+ {
+ if (default_index >= 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("DEFAULT partition should be one")),
+ parser_errposition(pstate, sps->name->location));
+ default_index = i;
+ }
+ else
+ {
+ new_parts[nparts++] = sps;
+ }
+ i++;
+ }
+ }
+ break;
+
+ case PARTITION_STRATEGY_HASH:
+ ereport(ERROR,
+ (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("partition of hash-partitioned table cannot be split")));
+ break;
+
+ default:
+ elog(ERROR, "unexpected partition strategy: %d",
+ (int) key->strategy);
+ break;
+ }
+
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ PartitionRangeBound **lower_bounds;
+ SinglePartitionSpec **tmp_new_parts;
+
+ /*
+ * For simplify check for ranges of new partitions need to sort all
+ * partitions in ascending order of them bounds (we compare upper
+ * bound only).
+ */
+ lower_bounds = (PartitionRangeBound **)
+ palloc0(nparts * sizeof(PartitionRangeBound *));
+
+ /* Create array of lower bounds. */
+ for (i = 0; i < nparts; i++)
+ {
+ lower_bounds[i] = make_one_partition_rbound(key, i,
+ new_parts[i]->bound->lowerdatums, true);
+ }
+
+ /* Sort array of lower bounds. */
+ qsort_arg(lower_bounds, nparts, sizeof(PartitionRangeBound *),
+ qsort_partition_rbound_cmp, (void *) key);
+
+ /* Reorder array of partitions. */
+ tmp_new_parts = new_parts;
+ new_parts = (SinglePartitionSpec **)
+ palloc0(nparts * sizeof(SinglePartitionSpec *));
+ for (i = 0; i < nparts; i++)
+ new_parts[i] = tmp_new_parts[lower_bounds[i]->index];
+
+ pfree(tmp_new_parts);
+ pfree(lower_bounds);
+ }
+
+ defaultPartOid =
+ get_default_oid_from_partdesc(RelationGetPartitionDesc(parent, true));
+
+ /* isSplitPartDefault flag: is split partition a DEFAULT partition? */
+ isSplitPartDefault = (defaultPartOid == splitPartOid);
+
+ if (isSplitPartDefault && default_index < 0)
+ {
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("any partition in the list should be DEFAULT because split partition is DEFAULT")),
+ parser_errposition(pstate, ((SinglePartitionSpec *) linitial(partlist))->name->location));
+ }
+ else if (!isSplitPartDefault && (default_index >= 0) && OidIsValid(defaultPartOid))
+ {
+ SinglePartitionSpec *spsDef =
+ (SinglePartitionSpec *) list_nth(partlist, default_index);
+
+ ereport(ERROR,
+ (errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
+ errmsg("new partition cannot be DEFAULT because DEFAULT partition already exists")),
+ parser_errposition(pstate, spsDef->name->location));
+ }
+
+ /* Indicator that partitioned table has (or will have) DEFAULT partition */
+ existsDefaultPart = OidIsValid(defaultPartOid) || (default_index >= 0);
+
+ for (i = 0; i < nparts; i++)
+ {
+ SinglePartitionSpec *sps = new_parts[i];
+
+ if (isSplitPartDefault)
+ {
+ /*
+ * In case split partition is DEFAULT partition we can use any
+ * free ranges - as when creating a new partition.
+ */
+ check_new_partition_bound(sps->name->relname, parent, sps->bound,
+ pstate);
+ }
+ else
+ {
+ /*
+ * Checks that bound of current partition is inside bound of split
+ * partition. For range partitioning: checks that upper bound of
+ * previous partition is equal to lower bound of current
+ * partition. For list partitioning: checks that split partition
+ * contains all values of current partition.
+ */
+ if (strategy == PARTITION_STRATEGY_RANGE)
+ {
+ bool first = (i == 0);
+ bool last = (i == (nparts - 1));
+
+ check_partition_bounds_for_split_range(parent, sps->name->relname, sps->bound,
+ splitPartOid, splitPartName,
+ first, last,
+ existsDefaultPart, pstate);
+ }
+ else
+ check_partition_bounds_for_split_list(parent, sps->name->relname,
+ sps->bound, splitPartOid, pstate);
+ }
+
+ /* Ranges of new partitions should not overlap. */
+ if (strategy == PARTITION_STRATEGY_RANGE && spsPrev)
+ check_two_partitions_bounds_range(parent, spsPrev->name, spsPrev->bound,
+ sps->name, sps->bound, existsDefaultPart, pstate);
+
+ spsPrev = sps;
+
+ /* Check: new partitions should have different names. */
+ for (j = i + 1; j < nparts; j++)
+ {
+ SinglePartitionSpec *sps2 = new_parts[j];
+
+ if (equal(sps->name, sps2->name))
+ ereport(ERROR,
+ (errcode(ERRCODE_DUPLICATE_TABLE),
+ errmsg("name \"%s\" already used", sps2->name->relname)),
+ parser_errposition(pstate, sps2->name->location));
+ }
+ }
+
+ if (strategy == PARTITION_STRATEGY_LIST)
+ {
+ /* Values of new partitions should not overlap. */
+ check_partitions_not_overlap_list(parent, new_parts, nparts,
+ pstate);
+
+ /*
+ * Need to check that all values of split partition contains in new
+ * partitions. Skip this check if DEFAULT partition exists.
+ */
+ if (!existsDefaultPart)
+ check_parent_values_in_new_partitions(parent, splitPartOid,
+ new_parts, nparts, pstate);
+ }
+
+ pfree(new_parts);
+}
+
/*
* calculate_partition_bound_for_merge
*
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index c9e3ac88cb..411841047d 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -13241,3 +13241,21 @@ get_range_partbound_string(List *bound_datums)
return buf->data;
}
+
+/*
+ * get_list_partvalue_string
+ * A C string representation of one list partition value
+ */
+char *
+get_list_partvalue_string(Const *val)
+{
+ deparse_context context;
+ StringInfo buf = makeStringInfo();
+
+ memset(&context, 0, sizeof(deparse_context));
+ context.buf = buf;
+
+ get_const_expr(val, &context, -1);
+
+ return buf->data;
+}
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 6e8a2b59e8..01fa1a6c2e 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -2411,6 +2411,7 @@ typedef enum AlterTableType
AT_AttachPartition, /* ATTACH PARTITION */
AT_DetachPartition, /* DETACH PARTITION */
AT_DetachPartitionFinalize, /* DETACH PARTITION FINALIZE */
+ AT_SplitPartition, /* SPLIT PARTITION */
AT_MergePartitions, /* MERGE PARTITIONS */
AT_AddIdentity, /* ADD IDENTITY */
AT_SetIdentity, /* SET identity column options */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index a4834eb9b7..9e4be53d93 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -419,6 +419,7 @@ PG_KEYWORD("smallint", SMALLINT, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("snapshot", SNAPSHOT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("some", SOME, RESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("source", SOURCE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("split", SPLIT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("sql", SQL_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("stable", STABLE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("standalone", STANDALONE_P, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/partitioning/partbounds.h b/src/include/partitioning/partbounds.h
index 0329d7bd84..9d2a26705f 100644
--- a/src/include/partitioning/partbounds.h
+++ b/src/include/partitioning/partbounds.h
@@ -143,6 +143,11 @@ extern int partition_range_datum_bsearch(FmgrInfo *partsupfunc,
extern int partition_hash_bsearch(PartitionBoundInfo boundinfo,
int modulus, int remainder);
+extern void check_partitions_for_split(Relation parent,
+ Oid splitPartOid,
+ RangeVar *splitPartName,
+ List *partlist,
+ ParseState *pstate);
extern void calculate_partition_bound_for_merge(Relation parent,
List *partNames,
List *partOids,
diff --git a/src/include/utils/ruleutils.h b/src/include/utils/ruleutils.h
index 161fb5ef02..6d86080622 100644
--- a/src/include/utils/ruleutils.h
+++ b/src/include/utils/ruleutils.h
@@ -49,4 +49,6 @@ extern char *get_range_partbound_string(List *bound_datums);
extern char *pg_get_statisticsobjdef_string(Oid statextid);
+extern char *get_list_partvalue_string(Const *val);
+
#endif /* RULEUTILS_H */
diff --git a/src/test/isolation/expected/partition-split.out b/src/test/isolation/expected/partition-split.out
new file mode 100644
index 0000000000..5d9e8b0925
--- /dev/null
+++ b/src/test/isolation/expected/partition-split.out
@@ -0,0 +1,190 @@
+Parsed test spec with 2 sessions
+
+starting permutation: s1b s1splt s2b s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2brr s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1b s1splt s2bs s2i s1c s2c s2s
+step s1b: BEGIN;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2b s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2brr s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1brr s1splt s2bs s2i s1c s2c s2s
+step s1brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2b s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2b: BEGIN;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2brr s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2brr: BEGIN ISOLATION LEVEL REPEATABLE READ;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
+
+starting permutation: s1bs s1splt s2bs s2i s1c s2c s2s
+step s1bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s1splt: ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20));
+step s2bs: BEGIN ISOLATION LEVEL SERIALIZABLE;
+step s2i: INSERT INTO tpart VALUES (1, 'text01'); <waiting ...>
+step s1c: COMMIT;
+step s2i: <... completed>
+step s2c: COMMIT;
+step s2s: SELECT * FROM tpart;
+ i|t
+--+------
+ 5|text05
+ 1|text01
+15|text15
+25|text25
+35|text35
+(5 rows)
+
diff --git a/src/test/isolation/isolation_schedule b/src/test/isolation/isolation_schedule
index 8bcaa8a625..0342eb39e4 100644
--- a/src/test/isolation/isolation_schedule
+++ b/src/test/isolation/isolation_schedule
@@ -104,6 +104,7 @@ test: partition-key-update-2
test: partition-key-update-3
test: partition-key-update-4
test: partition-merge
+test: partition-split
test: plpgsql-toast
test: cluster-conflict
test: cluster-conflict-partition
diff --git a/src/test/isolation/specs/partition-split.spec b/src/test/isolation/specs/partition-split.spec
new file mode 100644
index 0000000000..087239a4a1
--- /dev/null
+++ b/src/test/isolation/specs/partition-split.spec
@@ -0,0 +1,54 @@
+# Verify that SPLIT operation locks DML operations with partitioned table
+
+setup
+{
+ DROP TABLE IF EXISTS tpart;
+ CREATE TABLE tpart(i int, t text) partition by range(i);
+ CREATE TABLE tpart_00_10 PARTITION OF tpart FOR VALUES FROM (0) TO (10);
+ CREATE TABLE tpart_10_20 PARTITION OF tpart FOR VALUES FROM (10) TO (20);
+ CREATE TABLE tpart_20_30 PARTITION OF tpart FOR VALUES FROM (20) TO (30);
+ CREATE TABLE tpart_default PARTITION OF tpart DEFAULT;
+ INSERT INTO tpart VALUES (5, 'text05');
+ INSERT INTO tpart VALUES (15, 'text15');
+ INSERT INTO tpart VALUES (25, 'text25');
+ INSERT INTO tpart VALUES (35, 'text35');
+}
+
+teardown
+{
+ DROP TABLE tpart;
+}
+
+session s1
+step s1b { BEGIN; }
+step s1brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s1bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s1splt { ALTER TABLE tpart SPLIT PARTITION tpart_10_20 INTO
+ (PARTITION tpart_10_15 FOR VALUES FROM (10) TO (15),
+ PARTITION tpart_15_20 FOR VALUES FROM (15) TO (20)); }
+step s1c { COMMIT; }
+
+
+session s2
+step s2b { BEGIN; }
+step s2brr { BEGIN ISOLATION LEVEL REPEATABLE READ; }
+step s2bs { BEGIN ISOLATION LEVEL SERIALIZABLE; }
+step s2i { INSERT INTO tpart VALUES (1, 'text01'); }
+step s2c { COMMIT; }
+step s2s { SELECT * FROM tpart; }
+
+
+# s1 starts SPLIT PARTITION then s2 trying to insert row and
+# waits until s1 finished SPLIT operation.
+
+permutation s1b s1splt s2b s2i s1c s2c s2s
+permutation s1b s1splt s2brr s2i s1c s2c s2s
+permutation s1b s1splt s2bs s2i s1c s2c s2s
+
+permutation s1brr s1splt s2b s2i s1c s2c s2s
+permutation s1brr s1splt s2brr s2i s1c s2c s2s
+permutation s1brr s1splt s2bs s2i s1c s2c s2s
+
+permutation s1bs s1splt s2b s2i s1c s2c s2s
+permutation s1bs s1splt s2brr s2i s1c s2c s2s
+permutation s1bs s1splt s2bs s2i s1c s2c s2s
diff --git a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
index 69920757b2..265ef2a547 100644
--- a/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
+++ b/src/test/modules/test_ddl_deparse/test_ddl_deparse.c
@@ -300,6 +300,9 @@ get_altertable_subcmdinfo(PG_FUNCTION_ARGS)
case AT_DetachPartitionFinalize:
strtype = "DETACH PARTITION ... FINALIZE";
break;
+ case AT_SplitPartition:
+ strtype = "SPLIT PARTITION";
+ break;
case AT_MergePartitions:
strtype = "MERGE PARTITIONS";
break;
diff --git a/src/test/regress/expected/partition_split.out b/src/test/regress/expected/partition_split.out
new file mode 100644
index 0000000000..0a40f20554
--- /dev/null
+++ b/src/test/regress/expected/partition_split.out
@@ -0,0 +1,1417 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+--
+-- BY RANGE partitioning
+--
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_xxx" does not exist
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: relation "sales_jan2022" already exists
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: invalid bound specification for a range partition
+LINE 2: (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '202...
+ ^
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: empty range bound specified for partition "sales_mar2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+DETAIL: Specified lower bound ('03-01-2022') is greater than or equal to upper bound ('02-01-2022').
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+ERROR: list of new partitions should contains at least two items
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO...
+ ^
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb_mar_apr2022" already used
+LINE 3: PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03...
+ ^
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: name "sales_feb2022" already used
+LINE 3: PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO...
+ ^
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+LINE 4: ... sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-0...
+ ^
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_mar2022" conflicts with upper bound of previous partition "sales_feb2022"
+LINE 3: PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO...
+ ^
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+LINE 2: (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO...
+ ^
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(9 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+(4 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+SELECT * FROM sales_date;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(11 rows)
+
+SELECT * FROM sales_dec2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2021 | 12 | 7 | 2021.12.07 | Sales department
+ Manager2 | 2021 | 12 | 8 | 2021.12.08 | Sales department
+(2 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager3 | 2022 | 1 | 1 | 2022.01.01 | Sales department
+ Manager2 | 2022 | 1 | 2 | 2022.01.02 | Sales department
+ Manager1 | 2022 | 1 | 10 | 2022.01.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 2 | 4 | 2022.02.04 | Sales department
+ Manager3 | 2022 | 2 | 1 | 2022.02.01 | Sales department
+ Manager2 | 2022 | 2 | 10 | 2022.02.10 | Sales department
+(3 rows)
+
+SELECT * FROM sales_other;
+ salesman_name | sales_year | sales_month | sales_day | sales_date | sales_department
+---------------+------------+-------------+-----------+------------+------------------
+ Manager1 | 2022 | 3 | 3 | 2022.03.03 | Sales department
+ Manager2 | 2022 | 3 | 4 | 2022.03.04 | Sales department
+ Manager3 | 2022 | 5 | 1 | 2022.05.01 | Sales department
+(3 rows)
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+ERROR: relation "sales_jan_feb2022" does not exist
+LINE 1: SELECT * FROM sales_jan_feb2022;
+ ^
+DROP TABLE sales_date CASCADE;
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 7 | Li | 175 | 03-08-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 11 | Trump | 380 | 04-06-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(11 rows)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+-----------------------------+------------+----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx | | CREATE INDEX sales_others_sales_date_idx ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 11 | Trump | 380 | 04-06-2022
+ 5 | Deev | 250 | 04-07-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_feb2022 | sales_feb2022_sales_date_idx | | CREATE INDEX sales_feb2022_sales_date_idx ON partition_split_schema.sales_feb2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_mar2022 | sales_mar2022_sales_date_idx | | CREATE INDEX sales_mar2022_sales_date_idx ON partition_split_schema.sales_mar2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+---------------+------------------------------+------------+------------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_apr2022 | sales_apr2022_sales_date_idx | | CREATE INDEX sales_apr2022_sales_date_idx ON partition_split_schema.sales_apr2022 USING btree (sales_date)
+(1 row)
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+ schemaname | tablename | indexname | tablespace | indexdef
+------------------------+--------------+------------------------------+------------+-----------------------------------------------------------------------------------------------------------
+ partition_split_schema | sales_others | sales_others_sales_date_idx1 | | CREATE INDEX sales_others_sales_date_idx1 ON partition_split_schema.sales_others USING btree (sales_date)
+(1 row)
+
+DROP TABLE sales_range CASCADE;
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211230) TO (2022...
+ ^
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+LINE 4: PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20...
+ ^
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211210) TO (2021...
+ ^
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+LINE 3: PARTITION sales_error FOR VALUES FROM (20211201) TO (2022...
+ ^
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+LINE 2: (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20...
+ ^
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+DROP TABLE sales_range;
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+ pg_get_constraintdef | conname | conkey
+-------------------------------------------------------------+--------------------------------+--------
+ CHECK ((sales_amount > 1)) | sales_range_sales_amount_check | {2}
+ FOREIGN KEY (salesman_id) REFERENCES salesmans(salesman_id) | sales_range_salesman_id_fkey | {1}
+(2 rows)
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_sales_amount_check"
+DETAIL: Failing row contains (1, 0, 03-11-2022).
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(-1) is not present in table "salesmans".
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+ 20 | Smirnoff
+ 30 | Ford
+(4 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+DETAIL: Key (salesman_id)=(40) is not present in table "salesmans".
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = STATEMENT
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+NOTICE: trigger(salesmans) called: action = INSERT, when = AFTER, level = ROW
+SELECT * FROM salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 10 | May
+ 19 | Ivanov
+(2 rows)
+
+SELECT * FROM salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+SELECT * FROM salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+SELECT * FROM salesmans1_2;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+SELECT * FROM salesmans2_3;
+ salesman_id | salesman_name
+-------------+---------------
+ 2 | Ivanov
+(1 row)
+
+SELECT * FROM salesmans3_4;
+ salesman_id | salesman_name
+-------------+---------------
+ 3 | May
+(1 row)
+
+SELECT * FROM salesmans4_5;
+ salesman_id | salesman_name
+-------------+---------------
+ 4 | Ford
+(1 row)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+ attname | attidentity | attgenerated
+---------------+-------------+--------------
+ salesman_id | a |
+ salesman_name | |
+(2 rows)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+select * from salesmans01_10;
+ salesman_id | salesman_name
+-------------+---------------
+ 1 | Poirot
+(1 row)
+
+select * from salesmans10_20;
+ salesman_id | salesman_name
+-------------+---------------
+ 19 | Ivanov
+ 10 | May
+(2 rows)
+
+select * from salesmans20_30;
+ salesman_id | salesman_name
+-------------+---------------
+ 20 | Smirnoff
+(1 row)
+
+select * from salesmans30_40;
+ salesman_id | salesman_name
+-------------+---------------
+ 30 | Ford
+(1 row)
+
+DROP TABLE salesmans CASCADE;
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 3 | Ford | 2000 | 04-30-2022
+(4 rows)
+
+SELECT * FROM sales_apr2022_01_10;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_apr2022_10_20;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 4 | Ivanov | 750 | 04-13-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_20_30;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+(1 row)
+
+DROP TABLE sales_range;
+--
+-- BY LIST partitioning
+--
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok', 'Helsinki'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+ERROR: new partition "sales_east" would overlap with another (not split) partition "sales_nord"
+LINE 3: ... FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok', 'Helsinki'...
+ ^
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Lisbon', 'Kyiv'));
+ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+LINE 2: (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York',...
+ ^
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', NULL),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+LINE 2: ...s_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', NULL),
+ ^
+DROP TABLE sales_list;
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok', NULL);
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+ERROR: new partitions not have value NULL but split partition has
+-- ERROR: new partitions not have value 'Kyiv' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', NULL));
+ERROR: new partitions not have value 'Kyiv' but split partition has
+DROP TABLE sales_list;
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Helsinki', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+SELECT * FROM sales_list;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Oslo | 1200 | 03-06-2022
+ 9 | May | Oslo | 1200 | 03-11-2022
+ 10 | Halder | Helsinki | 800 | 03-02-2022
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+(14 rows)
+
+SELECT * FROM sales_west;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 2 | Smirnoff | New York | 500 | 03-03-2022
+ 5 | Deev | Lisbon | 250 | 03-07-2022
+ 11 | Muller | Madrid | 650 | 03-05-2022
+ 14 | Plato | Lisbon | 950 | 03-05-2022
+(4 rows)
+
+SELECT * FROM sales_east;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 1 | Trump | Bejing | 1000 | 03-01-2022
+ 8 | Li | Vladivostok | 1150 | 03-09-2022
+(2 rows)
+
+SELECT * FROM sales_nord;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+----------------+--------------+------------
+ 3 | Ford | St. Petersburg | 2000 | 03-05-2022
+ 7 | May | Oslo | 1200 | 03-06-2022
+ 9 | May | Oslo | 1200 | 03-11-2022
+ 10 | Halder | Helsinki | 800 | 03-02-2022
+(4 rows)
+
+SELECT * FROM sales_central;
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 6 | Poirot | Berlin | 1000 | 03-01-2022
+ 12 | Smith | Kyiv | 350 | 03-10-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(4 rows)
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+SELECT * FROM sales_central WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+ 13 | Gandi | Warsaw | 150 | 03-08-2022
+(2 rows)
+
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+ salesman_id | salesman_name | sales_state | sales_amount | sales_date
+-------------+---------------+-------------+--------------+------------
+ 4 | Ivanov | Warsaw | 750 | 03-04-2022
+(1 row)
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+DROP TABLE sales_list;
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+SELECT * FROM sales_jan2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 13 | Gandi | 377 | 01-09-2022
+(1 row)
+
+SELECT * FROM sales_feb2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-09-2022
+ 6 | Poirot | 150 | 02-07-2022
+(2 rows)
+
+SELECT * FROM sales_mar2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+(1 row)
+
+SELECT * FROM sales_apr2022_1decade;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(2 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
+ 1 | May | 1000 | 01-31-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 9 | Muller | 250 | 03-11-2022
+ 10 | Halder | 350 | 01-28-2022
+ 12 | Plato | 350 | 03-19-2022
+(8 rows)
+
+DROP TABLE sales_range;
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+SELECT * FROM sales_range;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(14 rows)
+
+SELECT * FROM sales_jan2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 1 | May | 1000 | 01-31-2022
+ 10 | Halder | 350 | 01-28-2022
+ 13 | Gandi | 377 | 01-09-2022
+(3 rows)
+
+SELECT * FROM sales_feb2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 2 | Smirnoff | 500 | 02-10-2022
+ 6 | Poirot | 150 | 02-11-2022
+ 8 | Ericsson | 185 | 02-23-2022
+(3 rows)
+
+SELECT * FROM sales_apr2022;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 3 | Ford | 2000 | 04-30-2022
+ 4 | Ivanov | 750 | 04-13-2022
+ 5 | Deev | 250 | 04-07-2022
+ 11 | Trump | 380 | 04-06-2022
+(4 rows)
+
+SELECT * FROM sales_others;
+ salesman_id | salesman_name | sales_amount | sales_date
+-------------+---------------+--------------+------------
+ 7 | Li | 175 | 03-08-2022
+ 9 | Muller | 250 | 03-11-2022
+ 12 | Plato | 350 | 03-19-2022
+ 14 | Smith | 510 | 05-04-2022
+(4 rows)
+
+DROP TABLE sales_range;
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 0bd1444767..675c567617 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -119,7 +119,7 @@ test: plancache limit plpgsql copy2 temp domain rangefuncs prepare conversion tr
# The stats test resets stats, so nothing else needing stats access can be in
# this group.
# ----------
-test: partition_merge partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
+test: partition_merge partition_split partition_join partition_prune reloptions hash_part indexing partition_aggregate partition_info tuplesort explain compression memoize stats predicate
# event_trigger depends on create_am and cannot run concurrently with
# any test that runs DDL
diff --git a/src/test/regress/sql/partition_split.sql b/src/test/regress/sql/partition_split.sql
new file mode 100644
index 0000000000..8864f6ddaa
--- /dev/null
+++ b/src/test/regress/sql/partition_split.sql
@@ -0,0 +1,833 @@
+--
+-- PARTITION_SPLIT
+-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
+--
+
+CREATE SCHEMA partition_split_schema;
+SET search_path = partition_split_schema, public;
+
+--
+-- BY RANGE partitioning
+--
+
+--
+-- Test for error codes
+--
+CREATE TABLE sales_range (salesman_id int, salesman_name varchar(30), sales_amount int, sales_date date) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- ERROR: relation "sales_xxx" does not exist
+ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: relation "sales_jan2022" already exists
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: invalid bound specification for a range partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: empty range bound specified for partition "sales_mar2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+--ERROR: list of split partitions should contains at least two items
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));
+
+-- ERROR: lower bound of partition "sales_feb2022" is less than lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb_mar_apr2022" already used
+-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: name "sales_feb2022" already used
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: "sales_feb_mar_apr2022" is not a partitioned table
+ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- ERROR: upper bound of partition "sales_apr2022" is greater than upper bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));
+
+-- ERROR: lower bound of partition "sales_mar2022" is not equals to upper bound of previous partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- Tests for spaces between partitions, them should be executed without DEFAULT partition
+ALTER TABLE sales_range DETACH PARTITION sales_others;
+
+-- ERROR: lower bound of partition "sales_feb2022" is not equals to lower bound of split partition
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+DROP TABLE sales_range;
+DROP TABLE sales_others;
+
+--
+-- Add rows into partitioned table then split partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Add split partition then add rows into partitioned table
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_mar2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test for:
+-- * composite partition key;
+-- * GENERATED column;
+-- * column with DEFAULT value.
+--
+CREATE TABLE sales_date (salesman_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
+ sales_date VARCHAR(10) GENERATED ALWAYS AS
+ (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
+ sales_department VARCHAR(30) DEFAULT 'Sales department')
+ PARTITION BY RANGE (sales_year, sales_month, sales_day);
+
+CREATE TABLE sales_dec2022 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
+CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
+CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2021, 12, 7);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2021, 12, 8);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 1, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 2, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 1, 2);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 2, 1);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 3, 3);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 3, 4);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager3', 2022, 5, 1);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan_feb2022;
+SELECT * FROM sales_other;
+
+ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
+ (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
+ PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));
+
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager1', 2022, 1, 10);
+INSERT INTO sales_date(salesman_name, sales_year, sales_month, sales_day) VALUES ('Manager2', 2022, 2, 10);
+
+SELECT * FROM sales_date;
+SELECT * FROM sales_dec2022;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_other;
+
+--ERROR: relation "sales_jan_feb2022" does not exist
+SELECT * FROM sales_jan_feb2022;
+
+DROP TABLE sales_date CASCADE;
+
+--
+-- Test: split DEFAULT partition; using a index on partition key; check index after split
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_others;
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_others DEFAULT);
+
+-- Use indexscan for test indexes
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
+SELECT * FROM sales_others where sales_date > '2022-01-01';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+SELECT * FROM pg_indexes WHERE tablename = 'sales_feb2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_mar2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_apr2022' and schemaname = 'partition_split_schema';
+SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema';
+
+DROP TABLE sales_range CASCADE;
+
+--
+-- Test: some cases for split DEFAULT partition (different bounds)
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- sales_error intersects with sales_dec2022 (lower bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211230) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_feb2022 (upper bound)
+-- ERROR: lower bound of partition "sales_feb2022" conflicts with upper bound of previous partition "sales_error"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20220101) TO (20220202),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (inside bound)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211210) TO (20211220),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- sales_error intersects with sales_dec2022 (exact the same bounds)
+-- ERROR: lower bound of partition "sales_error" conflicts with upper bound of previous partition "sales_dec2022"
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_error FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+-- ERROR: any partition in the list should be DEFAULT because split partition is DEFAULT
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_jan2022 FOR VALUES FROM (20220101) TO (20220201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301));
+
+-- no error: bounds of sales_noerror between sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20220110) TO (20220120),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date INT) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+-- no error: bounds of sales_noerror equals to lower and upper bounds of sales_dec2022 and sales_feb2022
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_dec2022 FOR VALUES FROM (20211201) TO (20220101),
+ PARTITION sales_noerror FOR VALUES FROM (20210101) TO (20210201),
+ PARTITION sales_feb2022 FOR VALUES FROM (20220201) TO (20220301),
+ PARTITION sales_others DEFAULT);
+
+DROP TABLE sales_range;
+
+--
+-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30));
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE TABLE sales_range (
+salesman_id INT REFERENCES salesmans(salesman_id),
+sales_amount INT CHECK (sales_amount > 1),
+sales_date DATE) PARTITION BY RANGE (sales_date);
+
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid;
+
+ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
+ (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
+ PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
+
+-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid;
+SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid;
+
+-- ERROR: new row for relation "sales_mar2022" violates check constraint "sales_range_salesman_id_check"
+INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
+-- ERROR: insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesman_id_fkey"
+INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
+-- ok
+INSERT INTO sales_range VALUES (1, 10, '2022-03-11');
+
+DROP TABLE sales_range CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition on partitioned table in case exists FOREIGN KEY reference from another table
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+CREATE TABLE sales (salesman_id INT REFERENCES salesmans(salesman_id), sales_amount INT, sales_date DATE);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (19, 'Ivanov');
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+INSERT INTO sales VALUES (1, 100, '2022-03-01');
+INSERT INTO sales VALUES (1, 110, '2022-03-02');
+INSERT INTO sales VALUES (10, 150, '2022-03-01');
+INSERT INTO sales VALUES (10, 90, '2022-03-03');
+INSERT INTO sales VALUES (19, 200, '2022-03-04');
+INSERT INTO sales VALUES (20, 50, '2022-03-12');
+INSERT INTO sales VALUES (20, 170, '2022-03-02');
+INSERT INTO sales VALUES (30, 30, '2022-03-04');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_40;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+-- ERROR: insert or update on table "sales" violates foreign key constraint "sales_salesman_id_fkey"
+INSERT INTO sales VALUES (40, 50, '2022-03-04');
+-- ok
+INSERT INTO sales VALUES (30, 50, '2022-03-04');
+
+DROP TABLE sales CASCADE;
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition of partitioned table with triggers
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+CREATE TABLE salesmans10_40 PARTITION OF salesmans FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+
+CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
+BEGIN
+ RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
+ RETURN NULL;
+END;
+$BODY$;
+
+CREATE TRIGGER salesmans_after_insert_statement_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH STATEMENT
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+CREATE TRIGGER salesmans_after_insert_row_trigger
+ AFTER INSERT
+ ON salesmans
+ FOR EACH ROW
+ EXECUTE PROCEDURE after_insert_row_trigger('salesmans');
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (10, 'May');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans10_40 VALUES (19, 'Ivanov');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+-- 2 triggers should fire here (row + statement):
+INSERT INTO salesmans VALUES (20, 'Smirnoff');
+-- 1 trigger should fire here (row):
+INSERT INTO salesmans30_40 VALUES (30, 'Ford');
+
+SELECT * FROM salesmans01_10;
+SELECT * FROM salesmans10_20;
+SELECT * FROM salesmans20_30;
+SELECT * FROM salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+DROP FUNCTION after_insert_row_trigger();
+
+--
+-- Test: split partition witch identity column
+-- If split partition column is identity-column, columns of new partitions are identity-columns too.
+--
+CREATE TABLE salesmans(salesman_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans1_2 PARTITION OF salesmans FOR VALUES FROM (1) TO (2);
+-- Create new partition with identity-column:
+CREATE TABLE salesmans2_5(salesman_id INT NOT NULL, salesman_name VARCHAR(30));
+ALTER TABLE salesmans ATTACH PARTITION salesmans2_5 FOR VALUES FROM (2) TO (5);
+
+INSERT INTO salesmans (salesman_name) VALUES ('Poirot');
+INSERT INTO salesmans (salesman_name) VALUES ('Ivanov');
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- Split partition has identity-column:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_5'::regclass::oid;
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans2_5 INTO
+ (PARTITION salesmans2_3 FOR VALUES FROM (2) TO (3),
+ PARTITION salesmans3_4 FOR VALUES FROM (3) TO (4),
+ PARTITION salesmans4_5 FOR VALUES FROM (4) TO (5));
+
+INSERT INTO salesmans (salesman_name) VALUES ('May');
+INSERT INTO salesmans (salesman_name) VALUES ('Ford');
+
+SELECT * FROM salesmans1_2;
+SELECT * FROM salesmans2_3;
+SELECT * FROM salesmans3_4;
+SELECT * FROM salesmans4_5;
+
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans1_2'::regclass::oid;
+-- New partitions have identity-columns:
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans2_3'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans3_4'::regclass::oid;
+SELECT attname, attidentity, attgenerated FROM pg_attribute WHERE attnum > 0 AND attrelid = 'salesmans4_5'::regclass::oid;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split partition with deleted columns
+--
+CREATE TABLE salesmans(salesman_id INT PRIMARY KEY, salesman_name VARCHAR(30)) PARTITION BY RANGE (salesman_id);
+
+CREATE TABLE salesmans01_10 PARTITION OF salesmans FOR VALUES FROM (1) TO (10);
+-- Create new partition with some deleted columns:
+CREATE TABLE salesmans10_40(d1 VARCHAR(30), salesman_id INT PRIMARY KEY, d2 INT, d3 DATE, salesman_name VARCHAR(30));
+
+INSERT INTO salesmans10_40 VALUES ('dummy value 1', 19, 100, now(), 'Ivanov');
+INSERT INTO salesmans10_40 VALUES ('dummy value 2', 20, 101, now(), 'Smirnoff');
+
+ALTER TABLE salesmans10_40 DROP COLUMN d1;
+ALTER TABLE salesmans10_40 DROP COLUMN d2;
+ALTER TABLE salesmans10_40 DROP COLUMN d3;
+
+ALTER TABLE salesmans ATTACH PARTITION salesmans10_40 FOR VALUES FROM (10) TO (40);
+
+INSERT INTO salesmans VALUES (1, 'Poirot');
+INSERT INTO salesmans VALUES (10, 'May');
+INSERT INTO salesmans VALUES (30, 'Ford');
+
+ALTER TABLE salesmans SPLIT PARTITION salesmans10_40 INTO
+ (PARTITION salesmans10_20 FOR VALUES FROM (10) TO (20),
+ PARTITION salesmans20_30 FOR VALUES FROM (20) TO (30),
+ PARTITION salesmans30_40 FOR VALUES FROM (30) TO (40));
+
+select * from salesmans01_10;
+select * from salesmans10_20;
+select * from salesmans20_30;
+select * from salesmans30_40;
+
+DROP TABLE salesmans CASCADE;
+
+--
+-- Test: split sub-partition
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
+CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');
+
+CREATE TABLE sales_apr2022 (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
+
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+
+ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
+ (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
+ PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
+ PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_apr2022_01_10;
+SELECT * FROM sales_apr2022_10_20;
+SELECT * FROM sales_apr2022_20_30;
+
+DROP TABLE sales_range;
+
+--
+-- BY LIST partitioning
+--
+
+--
+-- Test: specific errors for BY LIST partitioning
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+-- ERROR: partition "sales_east" would overlap partition "sales_nord"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok', 'Helsinki'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+-- ERROR: new partition "sales_west" would overlap with another new partition "sales_central"
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Lisbon', 'Kyiv'));
+
+-- ERROR: new partition "sales_west" cannot have NULL value because split partition does not have
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', NULL),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+DROP TABLE sales_list;
+
+--
+-- Test: two specific errors for BY LIST partitioning:
+-- * new partitions not has NULL value that split partition has.
+-- * new partitions not has a value that split partition has.
+--
+CREATE TABLE sales_list
+(salesman_id INT,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok', NULL);
+
+-- ERROR: new partitions not have value NULL but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+-- ERROR: new partitions not have value 'Kyiv' but split partition has
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', NULL));
+
+DROP TABLE sales_list;
+
+--
+-- Test: BY LIST partitioning, SPLIT PARTITION with data
+--
+CREATE TABLE sales_list
+(salesman_id SERIAL,
+ salesman_name VARCHAR(30),
+ sales_state VARCHAR(20),
+ sales_amount INT,
+ sales_date DATE)
+PARTITION BY LIST (sales_state);
+
+CREATE INDEX sales_list_salesman_name_idx ON sales_list USING btree (salesman_name);
+CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);
+
+CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
+CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Bejing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
+CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;
+
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Trump', 'Bejing', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smirnoff', 'New York', 500, '2022-03-03');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ford', 'St. Petersburg', 2000, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Ivanov', 'Warsaw', 750, '2022-03-04');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Deev', 'Lisbon', 250, '2022-03-07');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Poirot', 'Berlin', 1000, '2022-03-01');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-06');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Li', 'Vladivostok', 1150, '2022-03-09');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('May', 'Oslo', 1200, '2022-03-11');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Halder', 'Helsinki', 800, '2022-03-02');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Muller', 'Madrid', 650, '2022-03-05');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Smith', 'Kyiv', 350, '2022-03-10');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Gandi', 'Warsaw', 150, '2022-03-08');
+INSERT INTO sales_list (salesman_name, sales_state, sales_amount, sales_date) VALUES ('Plato', 'Lisbon', 950, '2022-03-05');
+
+ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
+ (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
+ PARTITION sales_east FOR VALUES IN ('Bejing', 'Delhi', 'Vladivostok'),
+ PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));
+
+SELECT * FROM sales_list;
+SELECT * FROM sales_west;
+SELECT * FROM sales_east;
+SELECT * FROM sales_nord;
+SELECT * FROM sales_central;
+
+-- Use indexscan for test indexes after split partition
+SET enable_indexscan = ON;
+SET enable_seqscan = OFF;
+
+SELECT * FROM sales_central WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
+SELECT * FROM sales_list WHERE salesman_name = 'Ivanov';
+
+SET enable_indexscan = ON;
+SET enable_seqscan = ON;
+
+DROP TABLE sales_list;
+
+--
+-- Test for:
+-- * split DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
+ (PARTITION sales_others DEFAULT,
+ PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for:
+-- * split non-DEFAULT partition to partitions with spaces between bounds;
+-- * random order of partitions in SPLIT PARTITION command.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');
+CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-09');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-07');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
+ PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
+ PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
+ PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));
+
+SELECT * FROM sales_jan2022_1decade;
+SELECT * FROM sales_feb2022_1decade;
+SELECT * FROM sales_mar2022_1decade;
+SELECT * FROM sales_apr2022_1decade;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
+-- with spaces between bounds.
+--
+CREATE TABLE sales_range (salesman_id INT, salesman_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
+CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
+CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
+
+INSERT INTO sales_range VALUES (1, 'May', 1000, '2022-01-31');
+INSERT INTO sales_range VALUES (2, 'Smirnoff', 500, '2022-02-10');
+INSERT INTO sales_range VALUES (3, 'Ford', 2000, '2022-04-30');
+INSERT INTO sales_range VALUES (4, 'Ivanov', 750, '2022-04-13');
+INSERT INTO sales_range VALUES (5, 'Deev', 250, '2022-04-07');
+INSERT INTO sales_range VALUES (6, 'Poirot', 150, '2022-02-11');
+INSERT INTO sales_range VALUES (7, 'Li', 175, '2022-03-08');
+INSERT INTO sales_range VALUES (8, 'Ericsson', 185, '2022-02-23');
+INSERT INTO sales_range VALUES (9, 'Muller', 250, '2022-03-11');
+INSERT INTO sales_range VALUES (10, 'Halder', 350, '2022-01-28');
+INSERT INTO sales_range VALUES (11, 'Trump', 380, '2022-04-06');
+INSERT INTO sales_range VALUES (12, 'Plato', 350, '2022-03-19');
+INSERT INTO sales_range VALUES (13, 'Gandi', 377, '2022-01-09');
+
+ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
+ (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
+ PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
+ PARTITION sales_others DEFAULT);
+
+INSERT INTO sales_range VALUES (14, 'Smith', 510, '2022-05-04');
+
+SELECT * FROM sales_range;
+SELECT * FROM sales_jan2022;
+SELECT * FROM sales_feb2022;
+SELECT * FROM sales_apr2022;
+SELECT * FROM sales_others;
+
+DROP TABLE sales_range;
+
+--
+DROP SCHEMA partition_split_schema;
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index eadb33e617..c5951fc322 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2692,6 +2692,7 @@ SpecialJoinInfo
SpinDelayStatus
SplitInterval
SplitLR
+SplitPartitionContext
SplitPageLayout
SplitPoint
SplitTextOutputData
--
2.40.1.windows.1
[text/plain] v31-0003-Additional-patch-for-ALTER-TABLE-.-MERGE-PARTITI.patch (5.2K, ../../[email protected]/4-v31-0003-Additional-patch-for-ALTER-TABLE-.-MERGE-PARTITI.patch)
download | inline diff:
From 233c0c414bc1d952d98b2eef4810f881e6afb24d Mon Sep 17 00:00:00 2001
From: Koval Dmitry <[email protected]>
Date: Fri, 5 Apr 2024 14:15:29 +0300
Subject: [PATCH v31 3/3] Additional patch for ALTER TABLE ... MERGE PARTITIONS
... command
---
src/backend/commands/tablecmds.c | 67 +++++++++----------
src/test/regress/expected/partition_merge.out | 2 +-
2 files changed, 34 insertions(+), 35 deletions(-)
diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c
index 582890a302..e79aeef920 100644
--- a/src/backend/commands/tablecmds.c
+++ b/src/backend/commands/tablecmds.c
@@ -21431,7 +21431,6 @@ ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
ListCell *listptr;
List *mergingPartitionsList = NIL;
Oid defaultPartOid;
- char tmpRelName[NAMEDATALEN];
RangeVar *mergePartName = cmd->name;
bool isSameName = false;
@@ -21461,12 +21460,17 @@ ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
* function transformPartitionCmdForMerge().
*/
if (equal(name, cmd->name))
+ {
/* One new partition can have the same name as merged partition. */
isSameName = true;
-
- /* Store a next merging partition into the list. */
- mergingPartitionsList = lappend(mergingPartitionsList,
- mergingPartition);
+ newPartRel = mergingPartition;
+ }
+ else
+ {
+ /* Store a next merging partition into the list. */
+ mergingPartitionsList = lappend(mergingPartitionsList,
+ mergingPartition);
+ }
}
/* Detach all merged partitions. */
@@ -21482,26 +21486,34 @@ ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
DetachPartitionFinalize(rel, mergingPartition, false, defaultPartOid);
}
- /* Create table for new partition, use partitioned table as model. */
if (isSameName)
{
- /* Create partition table with generated temparary name. */
- sprintf(tmpRelName, "merge-%u-%X-tmp", RelationGetRelid(rel), MyProcPid);
- mergePartName = makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
- tmpRelName, -1);
+ /* Detach partition that we re-use for merged partition. */
+
+ /* Remove the pg_inherits row first. */
+ RemoveInheritance(newPartRel, rel, false);
+ /* Do the final part of detaching. */
+ DetachPartitionFinalize(rel, newPartRel, false, defaultPartOid);
+
+ /* Make these updates visible */
+ CommandCounterIncrement();
}
- createPartitionTable(mergePartName,
- makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
- RelationGetRelationName(rel), -1),
- context);
+ else
+ {
+ /* Create table for new partition, use partitioned table as model. */
+ createPartitionTable(mergePartName,
+ makeRangeVar(get_namespace_name(RelationGetNamespace(rel)),
+ RelationGetRelationName(rel), -1),
+ context);
- /*
- * Open the new partition and acquire exclusive lock on it. This will
- * stop all the operations with partitioned table. This might seem
- * excessive, but this is the way we make sure nobody is planning queries
- * involving merging partitions.
- */
- newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+ /*
+ * Open the new partition and acquire exclusive lock on it. This will
+ * stop all the operations with partitioned table. This might seem
+ * excessive, but this is the way we make sure nobody is planning
+ * queries involving merging partitions.
+ */
+ newPartRel = table_openrv(mergePartName, AccessExclusiveLock);
+ }
/* Copy data from merged partitions to new partition. */
moveMergedTablesRows(rel, mergingPartitionsList, newPartRel);
@@ -21529,19 +21541,6 @@ ATExecMergePartitions(List **wqueue, AlteredTableInfo *tab, Relation rel,
performDeletion(&object, DROP_RESTRICT, 0);
}
list_free(mergingPartitionsList);
-
- /* Rename new partition if it is needed. */
- if (isSameName)
- {
- /*
- * We must bump the command counter to make the new partition tuple
- * visible for rename.
- */
- CommandCounterIncrement();
- /* Rename partition. */
- RenameRelationInternal(RelationGetRelid(newPartRel),
- cmd->name->relname, false, false);
- }
/* Keep the lock until commit. */
table_close(newPartRel, NoLock);
}
diff --git a/src/test/regress/expected/partition_merge.out b/src/test/regress/expected/partition_merge.out
index 2ba0ec47d9..f8dfbfcf41 100644
--- a/src/test/regress/expected/partition_merge.out
+++ b/src/test/regress/expected/partition_merge.out
@@ -211,13 +211,13 @@ ALTER TABLE sales_range MERGE PARTITIONS (sales_jan2022, sales_mar2022, sales_ot
select * from sales_others;
salesman_id | salesman_name | sales_amount | sales_date
-------------+---------------+--------------+------------
+ 14 | Smith | 510 | 05-04-2022
1 | May | 1000 | 01-31-2022
10 | Halder | 350 | 01-28-2022
13 | Gandi | 377 | 01-09-2022
7 | Li | 175 | 03-08-2022
9 | Muller | 250 | 03-11-2022
12 | Plato | 350 | 03-19-2022
- 14 | Smith | 510 | 05-04-2022
(7 rows)
-- show partitions with conditions:
--
2.40.1.windows.1
^ permalink raw reply [nested|flat] 9+ messages in thread
end of thread, other threads:[~2024-04-05 13:00 UTC | newest]
Thread overview: 9+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2021-08-03 11:23 [PATCH v2] Add tab completion for ALTER TABLE … ADD … Dagfinn Ilmari Mannsåker <[email protected]>
2024-03-19 14:43 Re: Add SPLIT PARTITION/MERGE PARTITIONS commands Dmitry Koval <[email protected]>
2024-03-26 23:39 ` Re: Add SPLIT PARTITION/MERGE PARTITIONS commands Alexander Korotkov <[email protected]>
2024-03-27 20:18 ` Re: Add SPLIT PARTITION/MERGE PARTITIONS commands Dmitry Koval <[email protected]>
2024-03-30 12:40 ` Re: Add SPLIT PARTITION/MERGE PARTITIONS commands Alexander Korotkov <[email protected]>
2024-03-31 00:56 ` Re: Add SPLIT PARTITION/MERGE PARTITIONS commands Dmitry Koval <[email protected]>
2024-03-31 02:12 ` Re: Add SPLIT PARTITION/MERGE PARTITIONS commands Dmitry Koval <[email protected]>
2024-04-04 19:17 ` Re: Add SPLIT PARTITION/MERGE PARTITIONS commands Alexander Korotkov <[email protected]>
2024-04-05 13:00 ` Re: Add SPLIT PARTITION/MERGE PARTITIONS commands Dmitry Koval <[email protected]>
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