public inbox for [email protected]
help / color / mirror / Atom feedFrom: Amit Langote <[email protected]>
To: jian he <[email protected]>
Cc: Alvaro Herrera <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Erik Rijkers <[email protected]>
Cc: Andrew Dunstan <[email protected]>
Cc: PostgreSQL-development <[email protected]>
Subject: Re: remaining sql/json patches
Date: Mon, 4 Mar 2024 18:40:10 +0900
Message-ID: <CA+HiwqEe+NDiuiqaazHwygnd5xcd3CCZnxEK6rLJNcNzcYS9mw@mail.gmail.com> (raw)
In-Reply-To: <CACJufxFqwgz7hR9514npSe2LpE79xXLEMRBJrXXJU6nE-b=yLg@mail.gmail.com>
References: <[email protected]>
<[email protected]>
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<CA+HiwqFctBg7--Om7fFdYUwwfJ5xb1M3L4E3d=-HZ=nXK_ETtA@mail.gmail.com>
<CA+HiwqGpaB7Oyea0qJiAQ_V6-qtfLdCTExcFNDChL_M-80-4uw@mail.gmail.com>
<CA+HiwqEw96AwERGSXWLX52oO8p-=BRJUHT6Jc9R1GCty3unZyA@mail.gmail.com>
<CACJufxG5vymBu=4J0yzMQCtcj51j6FEo=CGQF9Pnp3tzQPp+nw@mail.gmail.com>
<CACJufxFm8dKXkeYK7eOmrxwCtbzRVncQ_kOUYKP52fA34wuj2w@mail.gmail.com>
<CACJufxFqwgz7hR9514npSe2LpE79xXLEMRBJrXXJU6nE-b=yLg@mail.gmail.com>
Hi Jian,
Thanks for the reviews and sorry for the late reply. Replying to all
emails in one.
On Thu, Jan 25, 2024 at 11:39 PM jian he <[email protected]> wrote:
> On Thu, Jan 25, 2024 at 7:54 PM Amit Langote <[email protected]> wrote:
> > > The problem with returning comp_domain_with_typmod from json_value()
> > > seems to be that it's using a text-to-record CoerceViaIO expression
> > > picked from JsonExpr.item_coercions, which behaves differently than
> > > the expression tree that the following uses:
> > >
> > > select ('abcd', 42)::comp_domain_with_typmod;
> > > row
> > > ----------
> > > (abc,42)
> > > (1 row)
> >
> > Oh, it hadn't occurred to me to check what trying to coerce a "string"
> > containing the record literal would do:
> >
> > select '(''abcd'', 42)'::comp_domain_with_typmod;
> > ERROR: value too long for type character(3)
> > LINE 1: select '(''abcd'', 42)'::comp_domain_with_typmod;
> >
> > which is the same thing as what the JSON_QUERY() and JSON_VALUE() are
> > running into. So, it might be fair to think that the error is not a
> > limitation of the SQL/JSON patch but an underlying behavior that it
> > has to accept as is.
>
> Hi, I reconciled with these cases.
> What bugs me now is the first query of the following 4 cases (for comparison).
> SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING char(3) omit quotes);
> SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING char(3) keep quotes);
> SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING text omit quotes);
> SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING text keep quotes);
Fixed:
SELECT JSON_QUERY(jsonb '"[1,2]"', '$' RETURNING char(3) omit quotes);
json_query
------------
[1,
(1 row)
SELECT JSON_QUERY(jsonb '"[1,2]"', '$' RETURNING char(3) keep quotes);
json_query
------------
"[1
(1 row)
SELECT JSON_QUERY(jsonb '"[1,2]"', '$' RETURNING text omit quotes);
json_query
------------
[1,2]
(1 row)
SELECT JSON_QUERY(jsonb '"[1,2]"', '$' RETURNING text keep quotes);
json_query
------------
"[1,2]"
(1 row)
I didn't go with your proposed solution to check targettypmod in
ExecEvalJsonCoercion() though.
> I did some minor refactoring on the function coerceJsonFuncExprOutput.
> it will make the following queries return null instead of error. NULL
> is the return of json_value.
>
> SELECT JSON_QUERY(jsonb '"123"', '$' RETURNING int2);
> SELECT JSON_QUERY(jsonb '"123"', '$' RETURNING int4);
> SELECT JSON_QUERY(jsonb '"123"', '$' RETURNING int8);
> SELECT JSON_QUERY(jsonb '"123"', '$' RETURNING bool);
> SELECT JSON_QUERY(jsonb '"123"', '$' RETURNING numeric);
> SELECT JSON_QUERY(jsonb '"123"', '$' RETURNING real);
> SELECT JSON_QUERY(jsonb '"123"', '$' RETURNING float8);
I didn't really want to add an exception in the parser for these
specific types, but I agree that it's not great that the current code
doesn't respect the default NULL ON ERROR behavior, so I've adopted
your fix. I'm not sure if we'll do so in the future but the code can
be removed if we someday make the non-IO cast functions handle errors
softly too.
On Wed, Jan 31, 2024 at 11:52 PM jian he <[email protected]> wrote:
>
> Hi.
> minor issues.
> I am wondering do we need add `pg_node_attr(query_jumble_ignore)`
> to some of our created structs in src/include/nodes/parsenodes.h in
> v39-0001-Add-SQL-JSON-query-functions.patch
We haven't added those to the node structs of other SQL/JSON
functions, so I'm inclined to skip adding them in this patch.
> diff --git a/src/backend/parser/parse_jsontable.c
> b/src/backend/parser/parse_jsontable.c
> new file mode 100644
> index 0000000000..25b8204dc6
> --- /dev/null
> +++ b/src/backend/parser/parse_jsontable.c
> @@ -0,0 +1,718 @@
> +/*-------------------------------------------------------------------------
> + *
> + * parse_jsontable.c
> + * parsing of JSON_TABLE
> + *
> + * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
> + * Portions Copyright (c) 1994, Regents of the University of California
> + *
> + *
> + * IDENTIFICATION
> + * src/backend/parser/parse_jsontable.c
> + *
> + *-------------------------------------------------------------------------
> + */
> 2022 should change to 2024.
Oops, fixed.
On Mon, Feb 5, 2024 at 9:28 PM jian he <[email protected]> wrote:
>
> based on this query:
> begin;
> SET LOCAL TIME ZONE 10.5;
> with cte(s) as (select jsonb '"2023-08-15 12:34:56 +05:30"')
> select JSON_QUERY(s, '$.timestamp_tz()')::text,'+10.5'::text,
> 'timestamp_tz'::text from cte
> union all
> select JSON_QUERY(s, '$.time()')::text,'+10.5'::text, 'time'::text from cte
> union all
> select JSON_QUERY(s, '$.timestamp()')::text,'+10.5'::text,
> 'timestamp'::text from cte
> union all
> select JSON_QUERY(s, '$.date()')::text,'+10.5'::text, 'date'::text from cte
> union all
> select JSON_QUERY(s, '$.time_tz()')::text,'+10.5'::text,
> 'time_tz'::text from cte;
>
> SET LOCAL TIME ZONE -8;
> with cte(s) as (select jsonb '"2023-08-15 12:34:56 +05:30"')
> select JSON_QUERY(s, '$.timestamp_tz()')::text,'+10.5'::text,
> 'timestamp_tz'::text from cte
> union all
> select JSON_QUERY(s, '$.time()')::text,'+10.5'::text, 'time'::text from cte
> union all
> select JSON_QUERY(s, '$.timestamp()')::text,'+10.5'::text,
> 'timestamp'::text from cte
> union all
> select JSON_QUERY(s, '$.date()')::text,'+10.5'::text, 'date'::text from cte
> union all
> select JSON_QUERY(s, '$.time_tz()')::text,'+10.5'::text,
> 'time_tz'::text from cte;
> commit;
>
> I made some changes on jspIsMutableWalker.
> various new jsonpath methods added:
> https://git.postgresql.org/cgit/postgresql.git/commit/?id=66ea94e8e606529bb334515f388c62314956739e
> so we need to change jspIsMutableWalker accordingly.
Thanks for the heads up about that, merged.
On Wed, Feb 14, 2024 at 9:00 AM jian he <[email protected]> wrote:
>
> This part is already committed.
> ereport(ERROR,
> (errcode(ERRCODE_UNDEFINED_OBJECT),
> errmsg("could not find jsonpath variable \"%s\"",
> pnstrdup(varName, varNameLength))));
>
> but, you can simply use:
> ereport(ERROR,
> (errcode(ERRCODE_UNDEFINED_OBJECT),
> errmsg("could not find jsonpath variable \"%s\"",varName)));
>
> maybe not worth the trouble.
Yeah, maybe the pnstrdup is unnecessary. I'm inclined to leave that
alone for now and fix it later, not as part of this patch.
> I kind of want to know, using `pnstrdup`, when the malloc related
> memory will be freed?
That particular pnstrdup() will allocate somewhere in the
ExecutorState memory context, which gets reset during the transaction
abort processing, releasing that memory.
> json_query and json_query doc explanation is kind of crammed together.
> Do you think it's a good idea to use </listitem> and </itemizedlist>?
> it will look like bullet points. but the distance between the bullet
> point and the first text in the same line is a little bit long, so it
> may not look elegant.
> I've attached the picture, json_query is using `</listitem> and
> </itemizedlist>`, json_value is as of the v39.
Yeah, the bullet point list layout looks kind of neat, and is not
unprecedented because we have a list in the description of
json_poulate_record() for one. Though I wasn't able to come up with a
good breakdown of the points into sentences of appropriate length.
I'm inclined to leave that beautification project to another day.
> other than this and previous points, v39, 0001 looks good to go.
I've attached the updated patches. I would like to get 0001 committed
after I spent a couple more days staring at it.
Alvaro, do you still think that 0002 is a good idea and would you like
to push it yourself?
--
Thanks, Amit Langote
Attachments:
[application/octet-stream] v40-0002-Show-function-name-in-TableFuncScan.patch (22.6K, ../CA+HiwqEe+NDiuiqaazHwygnd5xcd3CCZnxEK6rLJNcNzcYS9mw@mail.gmail.com/2-v40-0002-Show-function-name-in-TableFuncScan.patch)
download | inline diff:
From b64706e8200a59bcb798ec78c73f9b5b22d11d1f Mon Sep 17 00:00:00 2001
From: Alvaro Herrera <[email protected]>
Date: Tue, 23 Jan 2024 12:11:46 +0900
Subject: [PATCH v40 2/3] Show function name in TableFuncScan
Previously we were only showing the user-specified alias, but this is
clearly not the code's intent.
Discussion: https://postgr.es/m/202401181711.qxjxpnl3ohnw%40alvherre.pgsql
---
src/backend/commands/explain.c | 2 +-
src/backend/nodes/outfuncs.c | 1 +
src/backend/nodes/readfuncs.c | 1 +
src/backend/parser/parse_relation.c | 4 ++--
src/include/nodes/parsenodes.h | 1 +
src/test/regress/expected/xml.out | 16 ++++++++--------
src/test/regress/expected/xml_1.out | 16 ++++++++--------
src/test/regress/expected/xml_2.out | 16 ++++++++--------
8 files changed, 30 insertions(+), 27 deletions(-)
diff --git a/src/backend/commands/explain.c b/src/backend/commands/explain.c
index 83d00a4663..d8174d35e2 100644
--- a/src/backend/commands/explain.c
+++ b/src/backend/commands/explain.c
@@ -3992,7 +3992,7 @@ ExplainTargetRel(Plan *plan, Index rti, ExplainState *es)
break;
case T_TableFuncScan:
Assert(rte->rtekind == RTE_TABLEFUNC);
- objectname = "xmltable";
+ objectname = rte->tablefunc_name;
objecttag = "Table Function Name";
break;
case T_ValuesScan:
diff --git a/src/backend/nodes/outfuncs.c b/src/backend/nodes/outfuncs.c
index 2c30bba212..8fd4b06019 100644
--- a/src/backend/nodes/outfuncs.c
+++ b/src/backend/nodes/outfuncs.c
@@ -531,6 +531,7 @@ _outRangeTblEntry(StringInfo str, const RangeTblEntry *node)
break;
case RTE_TABLEFUNC:
WRITE_NODE_FIELD(tablefunc);
+ WRITE_STRING_FIELD(tablefunc_name);
break;
case RTE_VALUES:
WRITE_NODE_FIELD(values_lists);
diff --git a/src/backend/nodes/readfuncs.c b/src/backend/nodes/readfuncs.c
index b1e2f2b440..46eb176d46 100644
--- a/src/backend/nodes/readfuncs.c
+++ b/src/backend/nodes/readfuncs.c
@@ -385,6 +385,7 @@ _readRangeTblEntry(void)
break;
case RTE_TABLEFUNC:
READ_NODE_FIELD(tablefunc);
+ READ_STRING_FIELD(tablefunc_name);
/* The RTE must have a copy of the column type info, if any */
if (local_node->tablefunc)
{
diff --git a/src/backend/parser/parse_relation.c b/src/backend/parser/parse_relation.c
index 34a0ec5901..65e54abdd1 100644
--- a/src/backend/parser/parse_relation.c
+++ b/src/backend/parser/parse_relation.c
@@ -2073,17 +2073,17 @@ addRangeTableEntryForTableFunc(ParseState *pstate,
Assert(list_length(tf->coltypmods) == list_length(tf->colnames));
Assert(list_length(tf->colcollations) == list_length(tf->colnames));
- refname = alias ? alias->aliasname : pstrdup("xmltable");
-
rte->rtekind = RTE_TABLEFUNC;
rte->relid = InvalidOid;
rte->subquery = NULL;
rte->tablefunc = tf;
+ rte->tablefunc_name = pstrdup("XMLTABLE");
rte->coltypes = tf->coltypes;
rte->coltypmods = tf->coltypmods;
rte->colcollations = tf->colcollations;
rte->alias = alias;
+ refname = alias ? alias->aliasname : pstrdup("xmltable");
eref = alias ? copyObject(alias) : makeAlias(refname, NIL);
numaliases = list_length(eref->colnames);
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 7cee3bec49..9ba6ec6a7e 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -1152,6 +1152,7 @@ typedef struct RangeTblEntry
* Fields valid for a TableFunc RTE (else NULL):
*/
TableFunc *tablefunc;
+ char *tablefunc_name;
/*
* Fields valid for a values RTE (else NIL):
diff --git a/src/test/regress/expected/xml.out b/src/test/regress/expected/xml.out
index 6500cff885..70335c74df 100644
--- a/src/test/regress/expected/xml.out
+++ b/src/test/regress/expected/xml.out
@@ -1343,11 +1343,11 @@ CREATE OR REPLACE VIEW public.xmltableview1 AS
FROM xmldata) x,
LATERAL XMLTABLE(('/ROWS/ROW'::text) PASSING (x.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME/text()'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
EXPLAIN (COSTS OFF) SELECT * FROM xmltableview1;
- QUERY PLAN
------------------------------------------
+ QUERY PLAN
+----------------------------------------------------
Nested Loop
-> Seq Scan on xmldata
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
(3 rows)
EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM xmltableview1;
@@ -1357,7 +1357,7 @@ EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM xmltableview1;
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME/text()'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
(7 rows)
@@ -1536,7 +1536,7 @@ SELECT xmltable.*
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
(7 rows)
@@ -1556,7 +1556,7 @@ SELECT f.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COU
Output: f."COUNTRY_NAME", f."REGION_ID"
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable" f
+ -> Table Function Scan on "XMLTABLE" f
Output: f."COUNTRY_NAME", f."REGION_ID"
Table Function Call: XMLTABLE(('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]'::text) PASSING (xmldata.data) COLUMNS "COUNTRY_NAME" text, "REGION_ID" integer)
Filter: (f."COUNTRY_NAME" = 'Japan'::text)
@@ -1591,7 +1591,7 @@ SELECT f.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COU
"Parent Relationship": "Inner", +
"Parallel Aware": false, +
"Async Capable": false, +
- "Table Function Name": "xmltable", +
+ "Table Function Name": "XMLTABLE", +
"Alias": "f", +
"Output": ["f.\"COUNTRY_NAME\"", "f.\"REGION_ID\""], +
"Table Function Call": "XMLTABLE(('/ROWS/ROW[COUNTRY_NAME=\"Japan\" or COUNTRY_NAME=\"India\"]'::text) PASSING (xmldata.data) COLUMNS \"COUNTRY_NAME\" text, \"REGION_ID\" integer)",+
@@ -1700,7 +1700,7 @@ SELECT xmltable.*
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
Filter: ("xmltable".region_id = 2)
diff --git a/src/test/regress/expected/xml_1.out b/src/test/regress/expected/xml_1.out
index 9323b84ae2..08127db720 100644
--- a/src/test/regress/expected/xml_1.out
+++ b/src/test/regress/expected/xml_1.out
@@ -1004,11 +1004,11 @@ CREATE OR REPLACE VIEW public.xmltableview1 AS
FROM xmldata) x,
LATERAL XMLTABLE(('/ROWS/ROW'::text) PASSING (x.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME/text()'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
EXPLAIN (COSTS OFF) SELECT * FROM xmltableview1;
- QUERY PLAN
------------------------------------------
+ QUERY PLAN
+----------------------------------------------------
Nested Loop
-> Seq Scan on xmldata
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
(3 rows)
EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM xmltableview1;
@@ -1018,7 +1018,7 @@ EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM xmltableview1;
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME/text()'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
(7 rows)
@@ -1162,7 +1162,7 @@ SELECT xmltable.*
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
(7 rows)
@@ -1181,7 +1181,7 @@ SELECT f.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COU
Output: f."COUNTRY_NAME", f."REGION_ID"
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable" f
+ -> Table Function Scan on "XMLTABLE" f
Output: f."COUNTRY_NAME", f."REGION_ID"
Table Function Call: XMLTABLE(('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]'::text) PASSING (xmldata.data) COLUMNS "COUNTRY_NAME" text, "REGION_ID" integer)
Filter: (f."COUNTRY_NAME" = 'Japan'::text)
@@ -1216,7 +1216,7 @@ SELECT f.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COU
"Parent Relationship": "Inner", +
"Parallel Aware": false, +
"Async Capable": false, +
- "Table Function Name": "xmltable", +
+ "Table Function Name": "XMLTABLE", +
"Alias": "f", +
"Output": ["f.\"COUNTRY_NAME\"", "f.\"REGION_ID\""], +
"Table Function Call": "XMLTABLE(('/ROWS/ROW[COUNTRY_NAME=\"Japan\" or COUNTRY_NAME=\"India\"]'::text) PASSING (xmldata.data) COLUMNS \"COUNTRY_NAME\" text, \"REGION_ID\" integer)",+
@@ -1319,7 +1319,7 @@ SELECT xmltable.*
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
Filter: ("xmltable".region_id = 2)
diff --git a/src/test/regress/expected/xml_2.out b/src/test/regress/expected/xml_2.out
index e1d165c6c9..c720a05f5a 100644
--- a/src/test/regress/expected/xml_2.out
+++ b/src/test/regress/expected/xml_2.out
@@ -1323,11 +1323,11 @@ CREATE OR REPLACE VIEW public.xmltableview1 AS
FROM xmldata) x,
LATERAL XMLTABLE(('/ROWS/ROW'::text) PASSING (x.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME/text()'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
EXPLAIN (COSTS OFF) SELECT * FROM xmltableview1;
- QUERY PLAN
------------------------------------------
+ QUERY PLAN
+----------------------------------------------------
Nested Loop
-> Seq Scan on xmldata
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
(3 rows)
EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM xmltableview1;
@@ -1337,7 +1337,7 @@ EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM xmltableview1;
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME/text()'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
(7 rows)
@@ -1516,7 +1516,7 @@ SELECT xmltable.*
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
(7 rows)
@@ -1536,7 +1536,7 @@ SELECT f.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COU
Output: f."COUNTRY_NAME", f."REGION_ID"
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable" f
+ -> Table Function Scan on "XMLTABLE" f
Output: f."COUNTRY_NAME", f."REGION_ID"
Table Function Call: XMLTABLE(('/ROWS/ROW[COUNTRY_NAME="Japan" or COUNTRY_NAME="India"]'::text) PASSING (xmldata.data) COLUMNS "COUNTRY_NAME" text, "REGION_ID" integer)
Filter: (f."COUNTRY_NAME" = 'Japan'::text)
@@ -1571,7 +1571,7 @@ SELECT f.* FROM xmldata, LATERAL xmltable('/ROWS/ROW[COUNTRY_NAME="Japan" or COU
"Parent Relationship": "Inner", +
"Parallel Aware": false, +
"Async Capable": false, +
- "Table Function Name": "xmltable", +
+ "Table Function Name": "XMLTABLE", +
"Alias": "f", +
"Output": ["f.\"COUNTRY_NAME\"", "f.\"REGION_ID\""], +
"Table Function Call": "XMLTABLE(('/ROWS/ROW[COUNTRY_NAME=\"Japan\" or COUNTRY_NAME=\"India\"]'::text) PASSING (xmldata.data) COLUMNS \"COUNTRY_NAME\" text, \"REGION_ID\" integer)",+
@@ -1680,7 +1680,7 @@ SELECT xmltable.*
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
-> Seq Scan on public.xmldata
Output: xmldata.data
- -> Table Function Scan on "xmltable"
+ -> Table Function Scan on "XMLTABLE" "xmltable"
Output: "xmltable".id, "xmltable"._id, "xmltable".country_name, "xmltable".country_id, "xmltable".region_id, "xmltable".size, "xmltable".unit, "xmltable".premier_name
Table Function Call: XMLTABLE(('/ROWS/ROW'::text) PASSING (xmldata.data) COLUMNS id integer PATH ('@id'::text), _id FOR ORDINALITY, country_name text PATH ('COUNTRY_NAME'::text) NOT NULL, country_id text PATH ('COUNTRY_ID'::text), region_id integer PATH ('REGION_ID'::text), size double precision PATH ('SIZE'::text), unit text PATH ('SIZE/@unit'::text), premier_name text DEFAULT ('not specified'::text) PATH ('PREMIER_NAME'::text))
Filter: ("xmltable".region_id = 2)
--
2.43.0
[application/octet-stream] v40-0003-JSON_TABLE.patch (187.2K, ../CA+HiwqEe+NDiuiqaazHwygnd5xcd3CCZnxEK6rLJNcNzcYS9mw@mail.gmail.com/3-v40-0003-JSON_TABLE.patch)
download | inline diff:
From 0c8f1a1483fb9f86cb42355bd5b36188c2ecaa94 Mon Sep 17 00:00:00 2001
From: Amit Langote <[email protected]>
Date: Thu, 18 Jan 2024 18:00:06 +0900
Subject: [PATCH v40 3/3] JSON_TABLE
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This feature allows jsonb data to be treated as a table and thus
used in a FROM clause like other tabular data. Data can be selected
from the jsonb using jsonpath expressions, and hoisted out of nested
structures in the jsonb to form multiple rows, more or less like an
outer join.
This also adds the PLAN clauses for JSON_TABLE, which allow the user
to specify how data from nested paths are joined, allowing
considerable freedom in shaping the tabular output of JSON_TABLE.
PLAN DEFAULT allows the user to specify the global strategies when
dealing with sibling or child nested paths. The is often sufficient
to achieve the necessary goal, and is considerably simpler than the
full PLAN clause, which allows the user to specify the strategy to be
used for each named nested path.
Author: Nikita Glukhov <[email protected]>
Author: Teodor Sigaev <[email protected]>
Author: Oleg Bartunov <[email protected]>
Author: Alexander Korotkov <[email protected]>
Author: Andrew Dunstan <[email protected]>
Author: Amit Langote <[email protected]>
Author: Jian He <[email protected]>
Reviewers have included (in no particular order) Andres Freund, Alexander
Korotkov, Pavel Stehule, Andrew Alsup, Erik Rijkers, Zihong Yu,
Himanshu Upadhyaya, Daniel Gustafsson, Justin Pryzby, Álvaro Herrera,
jian he
Discussion: https://postgr.es/m/[email protected]
Discussion: https://postgr.es/m/[email protected]
Discussion: https://postgr.es/m/abd9b83b-aa66-f230-3d6d-734817f0995d%40postgresql.org
Discussion: https://postgr.es/m/CA+HiwqE4XTdfb1nW=Ojoy_tQSRhYt-q_kb6i5d4xcKyrLC1Nbg@mail.gmail.com
---
doc/src/sgml/func.sgml | 510 +++++++
src/backend/catalog/sql_features.txt | 6 +-
src/backend/executor/execExprInterp.c | 6 +
src/backend/executor/nodeTableFuncscan.c | 27 +-
src/backend/nodes/makefuncs.c | 108 ++
src/backend/nodes/nodeFuncs.c | 38 +
src/backend/parser/Makefile | 1 +
src/backend/parser/gram.y | 299 +++-
src/backend/parser/meson.build | 1 +
src/backend/parser/parse_clause.c | 14 +-
src/backend/parser/parse_expr.c | 53 +-
src/backend/parser/parse_jsontable.c | 718 +++++++++
src/backend/parser/parse_relation.c | 8 +-
src/backend/parser/parse_target.c | 3 +
src/backend/utils/adt/jsonpath_exec.c | 547 +++++++
src/backend/utils/adt/ruleutils.c | 279 +++-
src/include/nodes/execnodes.h | 2 +
src/include/nodes/makefuncs.h | 9 +
src/include/nodes/parsenodes.h | 109 ++
src/include/nodes/primnodes.h | 60 +-
src/include/parser/kwlist.h | 4 +
src/include/parser/parse_clause.h | 3 +
src/include/utils/jsonpath.h | 3 +
src/interfaces/ecpg/test/ecpg_schedule | 1 +
.../test/expected/sql-sqljson_jsontable.c | 132 ++
.../expected/sql-sqljson_jsontable.stderr | 20 +
.../expected/sql-sqljson_jsontable.stdout | 0
src/interfaces/ecpg/test/sql/Makefile | 1 +
src/interfaces/ecpg/test/sql/meson.build | 1 +
.../ecpg/test/sql/sqljson_jsontable.pgc | 32 +
.../regress/expected/sqljson_jsontable.out | 1333 +++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/sqljson_jsontable.sql | 729 +++++++++
src/tools/pgindent/typedefs.list | 16 +
34 files changed, 5028 insertions(+), 47 deletions(-)
create mode 100644 src/backend/parser/parse_jsontable.c
create mode 100644 src/interfaces/ecpg/test/expected/sql-sqljson_jsontable.c
create mode 100644 src/interfaces/ecpg/test/expected/sql-sqljson_jsontable.stderr
create mode 100644 src/interfaces/ecpg/test/expected/sql-sqljson_jsontable.stdout
create mode 100644 src/interfaces/ecpg/test/sql/sqljson_jsontable.pgc
create mode 100644 src/test/regress/expected/sqljson_jsontable.out
create mode 100644 src/test/regress/sql/sqljson_jsontable.sql
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 1447135410..1488d61a16 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -18805,6 +18805,516 @@ DETAIL: Missing "]" after array dimensions.
</tgroup>
</table>
</sect2>
+
+ <sect2 id="functions-sqljson-table">
+ <title>JSON_TABLE</title>
+ <indexterm>
+ <primary>json_table</primary>
+ </indexterm>
+
+ <para>
+ <function>json_table</function> is an SQL/JSON function which
+ queries <acronym>JSON</acronym> data
+ and presents the results as a relational view, which can be accessed as a
+ regular SQL table. You can only use <function>json_table</function> inside the
+ <literal>FROM</literal> clause of a <literal>SELECT</literal> statement.
+ </para>
+
+ <para>
+ Taking JSON data as input, <function>json_table</function> uses
+ a path expression to extract a part of the provided data that
+ will be used as a <firstterm>row pattern</firstterm> for the
+ constructed view. Each SQL/JSON item at the top level of the row pattern serves
+ as the source for a separate row in the constructed relational view.
+ </para>
+
+ <para>
+ To split the row pattern into columns, <function>json_table</function>
+ provides the <literal>COLUMNS</literal> clause that defines the
+ schema of the created view. For each column to be constructed,
+ this clause provides a separate path expression that evaluates
+ the row pattern, extracts a JSON item, and returns it as a
+ separate SQL value for the specified column. If the required value
+ is stored in a nested level of the row pattern, it can be extracted
+ using the <literal>NESTED PATH</literal> subclause. Joining the
+ columns returned by <literal>NESTED PATH</literal> can add multiple
+ new rows to the constructed view. Such rows are called
+ <firstterm>child rows</firstterm>, as opposed to the <firstterm>parent row</firstterm>
+ that generates them.
+ </para>
+
+ <para>
+ The rows produced by <function>JSON_TABLE</function> are laterally
+ joined to the row that generated them, so you do not have to explicitly join
+ the constructed view with the original table holding <acronym>JSON</acronym>
+ data. Optionally, you can specify how to join the columns returned
+ by <literal>NESTED PATH</literal> using the <literal>PLAN</literal> clause.
+ </para>
+
+ <para>
+ Each <literal>NESTED PATH</literal> clause can generate one or more
+ columns. Columns produced by <literal>NESTED PATH</literal>s at the
+ same level are considered to be <firstterm>siblings</firstterm>,
+ while a column produced by a <literal>NESTED PATH</literal> is
+ considered to be a child of the column produced by a
+ <literal>NESTED PATH</literal> or row expression at a higher level.
+ Sibling columns are always joined first. Once they are processed,
+ the resulting rows are joined to the parent row.
+ </para>
+
+ <para>
+ The syntax is:
+ </para>
+
+<synopsis>
+JSON_TABLE (
+ <replaceable>context_item</replaceable>, <replaceable>path_expression</replaceable> <optional> AS <replaceable>json_path_name</replaceable> </optional> <optional> PASSING { <replaceable>value</replaceable> AS <replaceable>varname</replaceable> } <optional>, ...</optional> </optional>
+ COLUMNS ( <replaceable class="parameter">json_table_column</replaceable> <optional>, ...</optional> )
+ <optional> { <literal>ERROR</literal> | <literal>EMPTY</literal> } <literal>ON ERROR</literal> </optional>
+ <optional>
+ PLAN ( <replaceable class="parameter">json_table_plan</replaceable> ) |
+ PLAN DEFAULT ( { INNER | OUTER } <optional> , { CROSS | UNION } </optional>
+ | { CROSS | UNION } <optional> , { INNER | OUTER } </optional> )
+ </optional>
+)
+
+<phrase>
+where <replaceable class="parameter">json_table_column</replaceable> is:
+</phrase>
+ <replaceable>name</replaceable> <replaceable>type</replaceable> <optional> PATH <replaceable>json_path_specification</replaceable> </optional>
+ <optional> { WITHOUT | WITH { CONDITIONAL | <optional>UNCONDITIONAL</optional> } } <optional> ARRAY </optional> WRAPPER </optional>
+ <optional> { KEEP | OMIT } QUOTES <optional> ON SCALAR STRING </optional> </optional>
+ <optional> { ERROR | NULL | DEFAULT <replaceable>expression</replaceable> } ON EMPTY </optional>
+ <optional> { ERROR | NULL | DEFAULT <replaceable>expression</replaceable> } ON ERROR </optional>
+ | <replaceable>name</replaceable> <replaceable>type</replaceable> FORMAT JSON <optional>ENCODING <literal>UTF8</literal></optional>
+ <optional> PATH <replaceable>json_path_specification</replaceable> </optional>
+ <optional> { WITHOUT | WITH { CONDITIONAL | <optional>UNCONDITIONAL</optional> } } <optional> ARRAY </optional> WRAPPER </optional>
+ <optional> { KEEP | OMIT } QUOTES <optional> ON SCALAR STRING </optional> </optional>
+ <optional> { ERROR | NULL | EMPTY { ARRAY | OBJECT } | DEFAULT <replaceable>expression</replaceable> } ON EMPTY </optional>
+ <optional> { ERROR | NULL | EMPTY { ARRAY | OBJECT } | DEFAULT <replaceable>expression</replaceable> } ON ERROR </optional>
+ | <replaceable>name</replaceable> <replaceable>type</replaceable> EXISTS <optional> PATH <replaceable>json_path_specification</replaceable> </optional>
+ <optional> { ERROR | TRUE | FALSE | UNKNOWN } ON ERROR </optional>
+ | NESTED PATH <replaceable>json_path_specification</replaceable> <optional> AS <replaceable>path_name</replaceable> </optional>
+ COLUMNS ( <replaceable>json_table_column</replaceable> <optional>, ...</optional> )
+ | <replaceable>name</replaceable> FOR ORDINALITY
+<phrase>
+<replaceable>json_table_plan</replaceable> is:
+</phrase>
+ <replaceable>json_path_name</replaceable> <optional> { OUTER | INNER } <replaceable>json_table_plan_primary</replaceable> </optional>
+ | <replaceable>json_table_plan_primary</replaceable> { UNION <replaceable>json_table_plan_primary</replaceable> } <optional>...</optional>
+ | <replaceable>json_table_plan_primary</replaceable> { CROSS <replaceable>json_table_plan_primary</replaceable> } <optional>...</optional>
+<phrase>
+<replaceable>json_table_plan_primary</replaceable> is:
+</phrase>
+ <replaceable>json_path_name</replaceable> | ( <replaceable>json_table_plan</replaceable> )
+</synopsis>
+
+ <para>
+ Each syntax element is described below in more detail.
+ </para>
+
+ <variablelist>
+ <varlistentry>
+ <term>
+ <literal><replaceable>context_item</replaceable>, <replaceable>path_expression</replaceable> <optional> <literal>AS</literal> <replaceable>json_path_name</replaceable> </optional> <optional> <literal>PASSING</literal> { <replaceable>value</replaceable> <literal>AS</literal> <replaceable>varname</replaceable> } <optional>, ...</optional></optional></literal>
+ </term>
+ <listitem>
+ <para>
+ The input data to query, the JSON path expression defining the query,
+ and an optional <literal>PASSING</literal> clause, which can provide data
+ values to the <replaceable>path_expression</replaceable>.
+ The result of the input data
+ evaluation is called the <firstterm>row pattern</firstterm>. The row
+ pattern is used as the source for row values in the constructed view.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ <literal>COLUMNS</literal>( <replaceable>json_table_column</replaceable> <optional>, ...</optional> )
+ </term>
+ <listitem>
+
+ <para>
+ The <literal>COLUMNS</literal> clause defining the schema of the
+ constructed view. In this clause, you must specify all the columns
+ to be filled with SQL/JSON items.
+ The <replaceable>json_table_column</replaceable>
+ expression has the following syntax variants:
+ </para>
+
+ <variablelist>
+ <varlistentry>
+ <term>
+ <literal><replaceable>name</replaceable> <replaceable>type</replaceable>
+ <optional> <literal>PATH</literal> <replaceable>json_path_specification</replaceable> </optional></literal>
+ </term>
+ <listitem>
+
+ <para>
+ Inserts a single SQL/JSON item into the output row.
+ </para>
+ <para>
+ The provided <literal>PATH</literal> expression is evaluated and
+ the column is filled with the produced SQL/JSON item, one for each row.
+ If the <literal>PATH</literal> expression is omitted,
+ <function>JSON_TABLE</function> uses the
+ <literal>$.<replaceable>name</replaceable></literal> path expression,
+ where <replaceable>name</replaceable> is the provided column name.
+ In this case, the column name must correspond to one of the
+ keys within the SQL/JSON item produced by the row pattern.
+ </para>
+ <para>
+ Optionally, you can specify <literal>WRAPPER</literal>,
+ <literal>QUOTES</literal> clauses to format the output and
+ <literal>ON EMPTY</literal> and <literal>ON ERROR</literal> to handle
+ those missing values and structural errors, respectively.
+ </para>
+ <note>
+ <para>
+ This clause is internally turned into and has the same semantics as
+ <function>json_value</function> and <function>json_query</function>.
+ The latter if the specified type is not a scalar type or if
+ <literal>WRAPPER</literal> or <literal>QUOTES</literal> clause is
+ present.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ <replaceable>name</replaceable> <replaceable>type</replaceable> <literal>FORMAT JSON</literal> <optional>ENCODING <literal>UTF8</literal></optional>
+ <optional> <literal>PATH</literal> <replaceable>json_path_specification</replaceable> </optional>
+ </term>
+ <listitem>
+
+ <para>
+ Inserts a composite SQL/JSON item into the output row.
+ </para>
+ <para>
+ The provided <literal>PATH</literal> expression is evaluated and
+ the column is filled with the produced SQL/JSON item. If the
+ <literal>PATH</literal> expression is omitted, path expression
+ <literal>$.<replaceable>name</replaceable></literal> is used,
+ where <replaceable>name</replaceable> is the provided column name.
+ In this case, the column name must correspond to one of the
+ keys within the SQL/JSON item produced by the row pattern.
+ </para>
+ <para>
+ Optionally, you can specify <literal>WRAPPER</literal>,
+ <literal>QUOTES</literal> clauses to format the output and
+ <literal>ON EMPTY</literal> and <literal>ON ERROR</literal> to handle
+ those scenarios appropriately.
+ </para>
+ <note>
+ <para>
+ This clause is internally turned into and has the same semantics as
+ <function>json_query</function>.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ <replaceable>name</replaceable> <replaceable>type</replaceable>
+ <literal>EXISTS</literal> <optional> <literal>PATH</literal> <replaceable>json_path_specification</replaceable> </optional>
+ </term>
+ <listitem>
+
+ <para>
+ Inserts a boolean item into each output row.
+ </para>
+ <para>
+ The value corresponds to whether evaluating the <literal>PATH</literal>
+ expression yields any SQL/JSON items. If the <literal>PATH</literal>
+ expression is omitted, path expression
+ <literal>$.<replaceable>name</replaceable></literal> is used,
+ where <replaceable>name</replaceable> is the provided column name.
+ </para>
+ <para>
+ The specified <parameter>type</parameter> should have a cast from the
+ <type>boolean</type>.
+ </para>
+ <para>
+ Optionally, you can add <literal>ON ERROR</literal> clause to define
+ error behavior.
+ </para>
+ <note>
+ <para>
+ This clause is internally turned into and has the same semantics as
+ <function>json_exists</function>.
+ </para>
+ </note>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ <literal>NESTED PATH</literal> <replaceable>json_path_specification</replaceable> <optional> <literal>AS</literal> <replaceable>json_path_name</replaceable> </optional>
+ <literal>COLUMNS</literal> ( <replaceable>json_table_column</replaceable> <optional>, ...</optional> )
+ </term>
+ <listitem>
+
+ <para>
+ Extracts SQL/JSON items from nested levels of the row pattern,
+ generates one or more columns as defined by the <literal>COLUMNS</literal>
+ subclause, and inserts the extracted SQL/JSON items into each row of these columns.
+ The <replaceable>json_table_column</replaceable> expression in the
+ <literal>COLUMNS</literal> subclause uses the same syntax as in the
+ parent <literal>COLUMNS</literal> clause.
+ </para>
+
+ <para>
+ The <literal>NESTED PATH</literal> syntax is recursive,
+ so you can go down multiple nested levels by specifying several
+ <literal>NESTED PATH</literal> subclauses within each other.
+ It allows to unnest the hierarchy of JSON objects and arrays
+ in a single function invocation rather than chaining several
+ <function>JSON_TABLE</function> expressions in an SQL statement.
+ </para>
+
+ <para>
+ You can use the <literal>PLAN</literal> clause to define how
+ to join the columns returned by <literal>NESTED PATH</literal> clauses.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ <replaceable>name</replaceable> <literal>FOR ORDINALITY</literal>
+ </term>
+ <listitem>
+
+ <para>
+ Adds an ordinality column that provides sequential row numbering.
+ You can have only one ordinality column per table. Row numbering
+ is 1-based. For child rows that result from the <literal>NESTED PATH</literal>
+ clauses, the parent row number is repeated.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ <literal>AS</literal> <replaceable>json_path_name</replaceable>
+ </term>
+ <listitem>
+
+ <para>
+ The optional <replaceable>json_path_name</replaceable> serves as an
+ identifier of the provided <replaceable>json_path_specification</replaceable>.
+ The path name must be unique and distinct from the column names.
+ When using the <literal>PLAN</literal> clause, you must specify the names
+ for all the paths, including the row pattern. Each path name can appear in
+ the <literal>PLAN</literal> clause only once.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ <literal>PLAN</literal> ( <replaceable>json_table_plan</replaceable> )
+ </term>
+ <listitem>
+
+ <para>
+ Defines how to join the data returned by <literal>NESTED PATH</literal>
+ clauses to the constructed view.
+ </para>
+ <para>
+ To join columns with parent/child relationship, you can use:
+ </para>
+ <variablelist>
+ <varlistentry>
+ <term>
+ <literal>INNER</literal>
+ </term>
+ <listitem>
+
+ <para>
+ Use <literal>INNER JOIN</literal>, so that the parent row
+ is omitted from the output if it does not have any child rows
+ after joining the data returned by <literal>NESTED PATH</literal>.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ <literal>OUTER</literal>
+ </term>
+ <listitem>
+
+ <para>
+ Use <literal>LEFT OUTER JOIN</literal>, so that the parent row
+ is always included into the output even if it does not have any child rows
+ after joining the data returned by <literal>NESTED PATH</literal>, with NULL values
+ inserted into the child columns if the corresponding
+ values are missing.
+ </para>
+ <para>
+ This is the default option for joining columns with parent/child relationship.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+
+ <para>
+ To join sibling columns, you can use:
+ </para>
+
+ <variablelist>
+ <varlistentry>
+ <term>
+ <literal>UNION</literal>
+ </term>
+ <listitem>
+
+ <para>
+ Generate one row for each value produced by each of the sibling
+ columns. The columns from the other siblings are set to null.
+ </para>
+ <para>
+ This is the default option for joining sibling columns.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ <literal>CROSS</literal>
+ </term>
+ <listitem>
+
+ <para>
+ Generate one row for each combination of values from the sibling columns.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ </variablelist>
+
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>
+ <literal>PLAN DEFAULT</literal> ( <literal><replaceable>OUTER | INNER</replaceable> <optional>, <replaceable>UNION | CROSS</replaceable> </optional></literal> )
+ </term>
+ <listitem>
+ <para>
+ The terms can also be specified in reverse order. The
+ <literal>INNER</literal> or <literal>OUTER</literal> option defines the
+ joining plan for parent/child columns, while <literal>UNION</literal> or
+ <literal>CROSS</literal> affects joins of sibling columns. This form
+ of <literal>PLAN</literal> overrides the default plan for
+ all columns at once. Even though the path names are not included in the
+ <literal>PLAN DEFAULT</literal> form, to conform to the SQL/JSON standard
+ they must be provided for all the paths if the <literal>PLAN</literal>
+ clause is used.
+ </para>
+ <para>
+ <literal>PLAN DEFAULT</literal> is simpler than specifying a complete
+ <literal>PLAN</literal>, and is often all that is required to get the desired
+ output.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+
+ <para>Examples</para>
+
+ <para>
+ In these examples the following small table storing some JSON data will be used:
+<programlisting>
+CREATE TABLE my_films ( js jsonb );
+
+INSERT INTO my_films VALUES (
+'{ "favorites" : [
+ { "kind" : "comedy", "films" : [
+ { "title" : "Bananas",
+ "director" : "Woody Allen"},
+ { "title" : "The Dinner Game",
+ "director" : "Francis Veber" } ] },
+ { "kind" : "horror", "films" : [
+ { "title" : "Psycho",
+ "director" : "Alfred Hitchcock" } ] },
+ { "kind" : "thriller", "films" : [
+ { "title" : "Vertigo",
+ "director" : "Alfred Hitchcock" } ] },
+ { "kind" : "drama", "films" : [
+ { "title" : "Yojimbo",
+ "director" : "Akira Kurosawa" } ] }
+ ] }');
+</programlisting>
+ </para>
+ <para>
+ Query the <structname>my_films</structname> table holding
+ some JSON data about the films and create a view that
+ distributes the film genre, title, and director between separate columns:
+<screen>
+SELECT jt.* FROM
+ my_films,
+ JSON_TABLE ( js, '$.favorites[*]' COLUMNS (
+ id FOR ORDINALITY,
+ kind text PATH '$.kind',
+ NESTED PATH '$.films[*]' COLUMNS (
+ title text PATH '$.title',
+ director text PATH '$.director'))) AS jt;
+----+----------+------------------+-------------------
+ id | kind | title | director
+----+----------+------------------+-------------------
+ 1 | comedy | Bananas | Woody Allen
+ 1 | comedy | The Dinner Game | Francis Veber
+ 2 | horror | Psycho | Alfred Hitchcock
+ 3 | thriller | Vertigo | Alfred Hitchcock
+ 4 | drama | Yojimbo | Akira Kurosawa
+ (5 rows)
+</screen>
+ </para>
+
+ <para>
+ Find a director that has done films in two different genres:
+<screen>
+SELECT
+ director1 AS director, title1, kind1, title2, kind2
+FROM
+ my_films,
+ JSON_TABLE ( js, '$.favorites' AS favs COLUMNS (
+ NESTED PATH '$[*]' AS films1 COLUMNS (
+ kind1 text PATH '$.kind',
+ NESTED PATH '$.films[*]' AS film1 COLUMNS (
+ title1 text PATH '$.title',
+ director1 text PATH '$.director')
+ ),
+ NESTED PATH '$[*]' AS films2 COLUMNS (
+ kind2 text PATH '$.kind',
+ NESTED PATH '$.films[*]' AS film2 COLUMNS (
+ title2 text PATH '$.title',
+ director2 text PATH '$.director'
+ )
+ )
+ )
+ PLAN (favs OUTER ((films1 INNER film1) CROSS (films2 INNER film2)))
+ ) AS jt
+ WHERE kind1 > kind2 AND director1 = director2;
+
+ director | title1 | kind1 | title2 | kind2
+------------------+---------+----------+--------+--------
+ Alfred Hitchcock | Vertigo | thriller | Psycho | horror
+(1 row)
+</screen>
+ </para>
+ </sect2>
+
</sect1>
<sect1 id="functions-sequence">
diff --git a/src/backend/catalog/sql_features.txt b/src/backend/catalog/sql_features.txt
index 80ac59fba4..a0e63f454e 100644
--- a/src/backend/catalog/sql_features.txt
+++ b/src/backend/catalog/sql_features.txt
@@ -550,10 +550,10 @@ T814 Colon in JSON_OBJECT or JSON_OBJECTAGG YES
T821 Basic SQL/JSON query operators YES
T822 SQL/JSON: IS JSON WITH UNIQUE KEYS predicate YES
T823 SQL/JSON: PASSING clause YES
-T824 JSON_TABLE: specific PLAN clause NO
+T824 JSON_TABLE: specific PLAN clause YES
T825 SQL/JSON: ON EMPTY and ON ERROR clauses YES
T826 General value expression in ON ERROR or ON EMPTY clauses YES
-T827 JSON_TABLE: sibling NESTED COLUMNS clauses NO
+T827 JSON_TABLE: sibling NESTED COLUMNS clauses YES
T828 JSON_QUERY YES
T829 JSON_QUERY: array wrapper options YES
T830 Enforcing unique keys in SQL/JSON constructor functions YES
@@ -564,7 +564,7 @@ T834 SQL/JSON path language: wildcard member accessor YES
T835 SQL/JSON path language: filter expressions YES
T836 SQL/JSON path language: starts with predicate YES
T837 SQL/JSON path language: regex_like predicate YES
-T838 JSON_TABLE: PLAN DEFAULT clause NO
+T838 JSON_TABLE: PLAN DEFAULT clause YES
T839 Formatted cast of datetimes to/from character strings NO
T840 Hex integer literals in SQL/JSON path language YES
T851 SQL/JSON: optional keywords for default syntax YES
diff --git a/src/backend/executor/execExprInterp.c b/src/backend/executor/execExprInterp.c
index e6b69556f2..1a21eea690 100644
--- a/src/backend/executor/execExprInterp.c
+++ b/src/backend/executor/execExprInterp.c
@@ -4341,6 +4341,12 @@ ExecEvalJsonExprPath(ExprState *state, ExprEvalStep *op,
break;
}
+ case JSON_TABLE_OP:
+ post_eval->jump_eval_coercion = -1;
+ *op->resvalue = item;
+ *op->resnull = false;
+ break;
+
default:
elog(ERROR, "unrecognized SQL/JSON expression op %d", jexpr->op);
return false;
diff --git a/src/backend/executor/nodeTableFuncscan.c b/src/backend/executor/nodeTableFuncscan.c
index 72ca34a228..99fb92894c 100644
--- a/src/backend/executor/nodeTableFuncscan.c
+++ b/src/backend/executor/nodeTableFuncscan.c
@@ -28,6 +28,7 @@
#include "miscadmin.h"
#include "nodes/execnodes.h"
#include "utils/builtins.h"
+#include "utils/jsonpath.h"
#include "utils/lsyscache.h"
#include "utils/memutils.h"
#include "utils/xml.h"
@@ -161,8 +162,9 @@ ExecInitTableFuncScan(TableFuncScan *node, EState *estate, int eflags)
scanstate->ss.ps.qual =
ExecInitQual(node->scan.plan.qual, &scanstate->ss.ps);
- /* Only XMLTABLE is supported currently */
- scanstate->routine = &XmlTableRoutine;
+ /* Only XMLTABLE and JSON_TABLE are supported currently */
+ scanstate->routine =
+ tf->functype == TFT_XMLTABLE ? &XmlTableRoutine : &JsonbTableRoutine;
scanstate->perTableCxt =
AllocSetContextCreate(CurrentMemoryContext,
@@ -182,6 +184,10 @@ ExecInitTableFuncScan(TableFuncScan *node, EState *estate, int eflags)
ExecInitExprList(tf->colexprs, (PlanState *) scanstate);
scanstate->coldefexprs =
ExecInitExprList(tf->coldefexprs, (PlanState *) scanstate);
+ scanstate->colvalexprs =
+ ExecInitExprList(tf->colvalexprs, (PlanState *) scanstate);
+ scanstate->passingvalexprs =
+ ExecInitExprList(tf->passingvalexprs, (PlanState *) scanstate);
scanstate->notnulls = tf->notnulls;
@@ -369,14 +375,17 @@ tfuncInitialize(TableFuncScanState *tstate, ExprContext *econtext, Datum doc)
routine->SetNamespace(tstate, ns_name, ns_uri);
}
- /* Install the row filter expression into the table builder context */
- value = ExecEvalExpr(tstate->rowexpr, econtext, &isnull);
- if (isnull)
- ereport(ERROR,
- (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
- errmsg("row filter expression must not be null")));
+ if (routine->SetRowFilter)
+ {
+ /* Install the row filter expression into the table builder context */
+ value = ExecEvalExpr(tstate->rowexpr, econtext, &isnull);
+ if (isnull)
+ ereport(ERROR,
+ (errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
+ errmsg("row filter expression must not be null")));
- routine->SetRowFilter(tstate, TextDatumGetCString(value));
+ routine->SetRowFilter(tstate, TextDatumGetCString(value));
+ }
/*
* Install the column filter expressions into the table builder context.
diff --git a/src/backend/nodes/makefuncs.c b/src/backend/nodes/makefuncs.c
index 09a05a0373..b8d34770e8 100644
--- a/src/backend/nodes/makefuncs.c
+++ b/src/backend/nodes/makefuncs.c
@@ -538,6 +538,22 @@ makeFuncExpr(Oid funcid, Oid rettype, List *args,
return funcexpr;
}
+/*
+ * makeStringConst -
+ * build a A_Const node of type T_String for given string
+ */
+Node *
+makeStringConst(char *str, int location)
+{
+ A_Const *n = makeNode(A_Const);
+
+ n->val.sval.type = T_String;
+ n->val.sval.sval = str;
+ n->location = location;
+
+ return (Node *) n;
+}
+
/*
* makeDefElem -
* build a DefElem node
@@ -875,6 +891,98 @@ makeJsonBehavior(JsonBehaviorType type, Node *expr, JsonCoercion *coercion,
return behavior;
}
+/*
+ * makeJsonTablePath -
+ * Make JsonTablePath node from given path string and name (if any)
+ */
+JsonTablePath *
+makeJsonTablePath(Const *pathvalue, char *pathname)
+{
+ JsonTablePath *path = makeNode(JsonTablePath);
+
+ Assert(IsA(pathvalue, Const));
+ path->value = pathvalue;
+ if (pathname)
+ path->name = pathname;
+
+ return path;
+}
+
+/*
+ * makeJsonTablePathSpec -
+ * Make JsonTablePathSpec node from given path string and name (if any)
+ */
+Node *
+makeJsonTablePathSpec(char *string, char *name, int string_location,
+ int name_location)
+{
+ JsonTablePathSpec *pathspec = makeNode(JsonTablePathSpec);
+
+ Assert(string != NULL);
+ pathspec->string = makeStringConst(string, string_location);
+ if (name != NULL)
+ pathspec->name = pstrdup(name);
+
+ pathspec->name_location = name_location;
+ pathspec->location = string_location;
+
+ return (Node *) pathspec;
+}
+
+/*
+ * makeJsonTableDefaultPlan -
+ * creates a JsonTablePlanSpec node to represent a "default" JSON_TABLE plan
+ * with given join strategy
+ */
+Node *
+makeJsonTableDefaultPlan(JsonTablePlanJoinType join_type, int location)
+{
+ JsonTablePlanSpec *n = makeNode(JsonTablePlanSpec);
+
+ n->plan_type = JSTP_DEFAULT;
+ n->join_type = join_type;
+ n->location = location;
+
+ return (Node *) n;
+}
+
+/*
+ * makeJsonTableSimplePlan -
+ * creates a JsonTablePlanSpec node to represent a "simple" JSON_TABLE plan
+ * for given PATH
+ */
+Node *
+makeJsonTableSimplePlan(char *pathname, int location)
+{
+ JsonTablePlanSpec *n = makeNode(JsonTablePlanSpec);
+
+ n->plan_type = JSTP_SIMPLE;
+ n->pathname = pathname;
+ n->location = location;
+
+ return (Node *) n;
+}
+
+/*
+ * makeJsonTableJoinedPlan -
+ * creates a JsonTablePlanSpec node to represent join between the given
+ * pair of plans
+ */
+Node *
+makeJsonTableJoinedPlan(JsonTablePlanJoinType type, Node *plan1, Node *plan2,
+ int location)
+{
+ JsonTablePlanSpec *n = makeNode(JsonTablePlanSpec);
+
+ n->plan_type = JSTP_JOINED;
+ n->join_type = type;
+ n->plan1 = castNode(JsonTablePlanSpec, plan1);
+ n->plan2 = castNode(JsonTablePlanSpec, plan2);
+ n->location = location;
+
+ return (Node *) n;
+}
+
/*
* makeJsonKeyValue -
* creates a JsonKeyValue node
diff --git a/src/backend/nodes/nodeFuncs.c b/src/backend/nodes/nodeFuncs.c
index 4a3d96b298..d8c13e749d 100644
--- a/src/backend/nodes/nodeFuncs.c
+++ b/src/backend/nodes/nodeFuncs.c
@@ -2700,6 +2700,10 @@ expression_tree_walker_impl(Node *node,
return true;
if (WALK(tf->coldefexprs))
return true;
+ if (WALK(tf->colvalexprs))
+ return true;
+ if (WALK(tf->passingvalexprs))
+ return true;
}
break;
default:
@@ -3770,6 +3774,8 @@ expression_tree_mutator_impl(Node *node,
MUTATE(newnode->rowexpr, tf->rowexpr, Node *);
MUTATE(newnode->colexprs, tf->colexprs, List *);
MUTATE(newnode->coldefexprs, tf->coldefexprs, List *);
+ MUTATE(newnode->colvalexprs, tf->colvalexprs, List *);
+ MUTATE(newnode->passingvalexprs, tf->passingvalexprs, List *);
return (Node *) newnode;
}
break;
@@ -4195,6 +4201,38 @@ raw_expression_tree_walker_impl(Node *node,
return true;
}
break;
+ case T_JsonTable:
+ {
+ JsonTable *jt = (JsonTable *) node;
+
+ if (WALK(jt->context_item))
+ return true;
+ if (WALK(jt->pathspec))
+ return true;
+ if (WALK(jt->passing))
+ return true;
+ if (WALK(jt->columns))
+ return true;
+ if (WALK(jt->on_error))
+ return true;
+ }
+ break;
+ case T_JsonTableColumn:
+ {
+ JsonTableColumn *jtc = (JsonTableColumn *) node;
+
+ if (WALK(jtc->typeName))
+ return true;
+ if (WALK(jtc->on_empty))
+ return true;
+ if (WALK(jtc->on_error))
+ return true;
+ if (jtc->coltype == JTC_NESTED && WALK(jtc->columns))
+ return true;
+ }
+ break;
+ case T_JsonTablePathSpec:
+ return WALK(((JsonTablePathSpec *) node)->string);
case T_NullTest:
return WALK(((NullTest *) node)->arg);
case T_BooleanTest:
diff --git a/src/backend/parser/Makefile b/src/backend/parser/Makefile
index 401c16686c..3162a01f30 100644
--- a/src/backend/parser/Makefile
+++ b/src/backend/parser/Makefile
@@ -23,6 +23,7 @@ OBJS = \
parse_enr.o \
parse_expr.o \
parse_func.o \
+ parse_jsontable.o \
parse_merge.o \
parse_node.o \
parse_oper.o \
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index e900edfb8a..7915e8279f 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -170,7 +170,6 @@ static void updateRawStmtEnd(RawStmt *rs, int end_location);
static Node *makeColumnRef(char *colname, List *indirection,
int location, core_yyscan_t yyscanner);
static Node *makeTypeCast(Node *arg, TypeName *typename, int location);
-static Node *makeStringConst(char *str, int location);
static Node *makeStringConstCast(char *str, int location, TypeName *typename);
static Node *makeIntConst(int val, int location);
static Node *makeFloatConst(char *str, int location);
@@ -655,15 +654,31 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
json_argument
json_behavior
json_on_error_clause_opt
+ json_table
+ json_table_column_definition
+ json_table_column_path_clause_opt
+ json_table_plan_clause_opt
+ json_table_plan
+ json_table_plan_simple
+ json_table_plan_outer
+ json_table_plan_inner
+ json_table_plan_union
+ json_table_plan_cross
+ json_table_plan_primary
%type <list> json_name_and_value_list
json_value_expr_list
json_array_aggregate_order_by_clause_opt
json_arguments
json_behavior_clause_opt
json_passing_clause_opt
+ json_table_column_definition_list
+%type <str> json_table_path_name_opt
%type <ival> json_behavior_type
json_predicate_type_constraint
json_quotes_clause_opt
+ json_table_default_plan_choices
+ json_table_default_plan_inner_outer
+ json_table_default_plan_union_cross
json_wrapper_behavior
%type <boolean> json_key_uniqueness_constraint_opt
json_object_constructor_null_clause_opt
@@ -733,7 +748,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
INTERSECT INTERVAL INTO INVOKER IS ISNULL ISOLATION
JOIN JSON JSON_ARRAY JSON_ARRAYAGG JSON_EXISTS JSON_OBJECT JSON_OBJECTAGG
- JSON_QUERY JSON_SCALAR JSON_SERIALIZE JSON_VALUE
+ JSON_QUERY JSON_SCALAR JSON_SERIALIZE JSON_TABLE JSON_VALUE
KEEP KEY KEYS
@@ -744,8 +759,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
MAPPING MATCH MATCHED MATERIALIZED MAXVALUE MERGE METHOD
MINUTE_P MINVALUE MODE MONTH_P MOVE
- NAME_P NAMES NATIONAL NATURAL NCHAR NEW NEXT NFC NFD NFKC NFKD NO NONE
- NORMALIZE NORMALIZED
+ NAME_P NAMES NATIONAL NATURAL NCHAR NESTED NEW NEXT NFC NFD NFKC NFKD NO
+ NONE NORMALIZE NORMALIZED
NOT NOTHING NOTIFY NOTNULL NOWAIT NULL_P NULLIF
NULLS_P NUMERIC
@@ -753,8 +768,8 @@ 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
- PLACING PLANS POLICY
+ PARALLEL PARAMETER PARSER PARTIAL PARTITION PASSING PASSWORD PATH
+ PLACING PLAN PLANS POLICY
POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
PRIOR PRIVILEGES PROCEDURAL PROCEDURE PROCEDURES PROGRAM PUBLICATION
@@ -872,10 +887,13 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
* the same precedence as IDENT. This allows resolving conflicts in the
* json_predicate_type_constraint and json_key_uniqueness_constraint_opt
* productions (see comments there).
+ *
+ * Like the UNBOUNDED PRECEDING/FOLLOWING case, NESTED is assigned a lower
+ * precedence than PATH to fix ambiguity in the json_table production.
*/
-%nonassoc UNBOUNDED /* ideally would have same precedence as IDENT */
+%nonassoc UNBOUNDED NESTED /* ideally would have same precedence as IDENT */
%nonassoc IDENT PARTITION RANGE ROWS GROUPS PRECEDING FOLLOWING CUBE ROLLUP
- SET KEYS OBJECT_P SCALAR VALUE_P WITH WITHOUT
+ SET KEYS OBJECT_P SCALAR VALUE_P WITH WITHOUT PATH
%left Op OPERATOR /* multi-character ops and user-defined operators */
%left '+' '-'
%left '*' '/' '%'
@@ -896,7 +914,6 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
* left-associativity among the JOIN rules themselves.
*/
%left JOIN CROSS LEFT FULL RIGHT INNER_P NATURAL
-
%%
/*
@@ -13445,6 +13462,21 @@ table_ref: relation_expr opt_alias_clause
$2->alias = $4;
$$ = (Node *) $2;
}
+ | json_table opt_alias_clause
+ {
+ JsonTable *jt = castNode(JsonTable, $1);
+
+ jt->alias = $2;
+ $$ = (Node *) jt;
+ }
+ | LATERAL_P json_table opt_alias_clause
+ {
+ JsonTable *jt = castNode(JsonTable, $2);
+
+ jt->alias = $3;
+ jt->lateral = true;
+ $$ = (Node *) jt;
+ }
;
@@ -14012,6 +14044,8 @@ xmltable_column_option_el:
{ $$ = makeDefElem("is_not_null", (Node *) makeBoolean(true), @1); }
| NULL_P
{ $$ = makeDefElem("is_not_null", (Node *) makeBoolean(false), @1); }
+ | PATH b_expr
+ { $$ = makeDefElem("path", $2, @1); }
;
xml_namespace_list:
@@ -14040,6 +14074,233 @@ xml_namespace_el:
}
;
+json_table:
+ JSON_TABLE '('
+ json_value_expr ',' a_expr json_table_path_name_opt
+ json_passing_clause_opt
+ COLUMNS '(' json_table_column_definition_list ')'
+ json_table_plan_clause_opt
+ json_on_error_clause_opt
+ ')'
+ {
+ JsonTable *n = makeNode(JsonTable);
+ char *pathstring;
+
+ n->context_item = (JsonValueExpr *) $3;
+ if (!IsA($5, A_Const) ||
+ castNode(A_Const, $5)->val.node.type != T_String)
+ ereport(ERROR,
+ errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("only string constants are supported in JSON_TABLE"
+ " path specification"),
+ parser_errposition(@5));
+ pathstring = castNode(A_Const, $5)->val.sval.sval;
+ n->pathspec = (JsonTablePathSpec *)
+ makeJsonTablePathSpec(pathstring, $6, @5, @6);
+ n->passing = $7;
+ n->columns = $10;
+ n->planspec = (JsonTablePlanSpec *) $12;
+ n->on_error = (JsonBehavior *) $13;
+ n->location = @1;
+ $$ = (Node *) n;
+ }
+ ;
+
+json_table_path_name_opt:
+ AS name { $$ = $2; }
+ | /* empty */ { $$ = NULL; }
+ ;
+
+json_table_column_definition_list:
+ json_table_column_definition
+ { $$ = list_make1($1); }
+ | json_table_column_definition_list ',' json_table_column_definition
+ { $$ = lappend($1, $3); }
+ ;
+
+json_table_column_definition:
+ ColId FOR ORDINALITY
+ {
+ JsonTableColumn *n = makeNode(JsonTableColumn);
+
+ n->coltype = JTC_FOR_ORDINALITY;
+ n->name = $1;
+ n->location = @1;
+ $$ = (Node *) n;
+ }
+ | ColId Typename
+ json_table_column_path_clause_opt
+ json_wrapper_behavior
+ json_quotes_clause_opt
+ json_behavior_clause_opt
+ {
+ JsonTableColumn *n = makeNode(JsonTableColumn);
+
+ n->coltype = JTC_REGULAR;
+ n->name = $1;
+ n->typeName = $2;
+ n->format = makeJsonFormat(JS_FORMAT_DEFAULT, JS_ENC_DEFAULT, -1);
+ n->pathspec = (JsonTablePathSpec *) $3;
+ n->wrapper = $4; /* disallowed during parse-analysis! */
+ n->quotes = $5; /* disallowed during parse-analysis! */
+ n->on_empty = (JsonBehavior *) linitial($6);
+ n->on_error = (JsonBehavior *) lsecond($6);
+ n->location = @1;
+ $$ = (Node *) n;
+ }
+ | ColId Typename json_format_clause
+ json_table_column_path_clause_opt
+ json_wrapper_behavior
+ json_quotes_clause_opt
+ json_behavior_clause_opt
+ {
+ JsonTableColumn *n = makeNode(JsonTableColumn);
+
+ n->coltype = JTC_FORMATTED;
+ n->name = $1;
+ n->typeName = $2;
+ n->format = (JsonFormat *) $3;
+ n->pathspec = (JsonTablePathSpec *) $4;
+ n->wrapper = $5;
+ n->quotes = $6;
+ n->on_empty = (JsonBehavior *) linitial($7);
+ n->on_error = (JsonBehavior *) lsecond($7);
+ n->location = @1;
+ $$ = (Node *) n;
+ }
+ | ColId Typename
+ EXISTS json_table_column_path_clause_opt
+ json_behavior_clause_opt
+ {
+ JsonTableColumn *n = makeNode(JsonTableColumn);
+
+ n->coltype = JTC_EXISTS;
+ n->name = $1;
+ n->typeName = $2;
+ n->format = makeJsonFormat(JS_FORMAT_DEFAULT, JS_ENC_DEFAULT, -1);
+ n->wrapper = JSW_NONE;
+ n->quotes = JS_QUOTES_UNSPEC;
+ n->pathspec = (JsonTablePathSpec *) $4;
+ n->on_empty = (JsonBehavior *) linitial($5);
+ n->on_error = (JsonBehavior *) lsecond($5);
+ n->location = @1;
+ $$ = (Node *) n;
+ }
+ | NESTED path_opt Sconst
+ COLUMNS '(' json_table_column_definition_list ')'
+ {
+ JsonTableColumn *n = makeNode(JsonTableColumn);
+
+ n->coltype = JTC_NESTED;
+ n->pathspec = (JsonTablePathSpec *)
+ makeJsonTablePathSpec($3, NULL, @3, -1);
+ n->columns = $6;
+ n->location = @1;
+ $$ = (Node *) n;
+ }
+ | NESTED path_opt Sconst AS name
+ COLUMNS '(' json_table_column_definition_list ')'
+ {
+ JsonTableColumn *n = makeNode(JsonTableColumn);
+
+ n->coltype = JTC_NESTED;
+ n->pathspec = (JsonTablePathSpec *)
+ makeJsonTablePathSpec($3, $5, @3, @5);
+ n->columns = $8;
+ n->location = @1;
+ $$ = (Node *) n;
+ }
+ ;
+
+path_opt:
+ PATH
+ | /* EMPTY */
+ ;
+
+json_table_column_path_clause_opt:
+ PATH Sconst
+ { $$ = makeJsonTablePathSpec($2, NULL, @2, -1); }
+ | /* EMPTY */
+ { $$ = NULL; }
+ ;
+
+json_table_plan_clause_opt:
+ PLAN '(' json_table_plan ')'
+ { $$ = $3; }
+ | PLAN DEFAULT '(' json_table_default_plan_choices ')'
+ { $$ = makeJsonTableDefaultPlan($4, @1); }
+ | /* EMPTY */
+ { $$ = NULL; }
+ ;
+
+json_table_plan:
+ json_table_plan_simple
+ | json_table_plan_outer
+ | json_table_plan_inner
+ | json_table_plan_union
+ | json_table_plan_cross
+ ;
+
+json_table_plan_simple:
+ name
+ { $$ = makeJsonTableSimplePlan($1, @1); }
+ ;
+
+json_table_plan_outer:
+ json_table_plan_simple OUTER_P json_table_plan_primary
+ { $$ = makeJsonTableJoinedPlan(JSTP_JOIN_OUTER, $1, $3, @1); }
+ ;
+
+json_table_plan_inner:
+ json_table_plan_simple INNER_P json_table_plan_primary
+ { $$ = makeJsonTableJoinedPlan(JSTP_JOIN_INNER, $1, $3, @1); }
+ ;
+
+json_table_plan_union:
+ json_table_plan_primary UNION json_table_plan_primary
+ { $$ = makeJsonTableJoinedPlan(JSTP_JOIN_UNION, $1, $3, @1); }
+ | json_table_plan_union UNION json_table_plan_primary
+ { $$ = makeJsonTableJoinedPlan(JSTP_JOIN_UNION, $1, $3, @1); }
+ ;
+
+json_table_plan_cross:
+ json_table_plan_primary CROSS json_table_plan_primary
+ { $$ = makeJsonTableJoinedPlan(JSTP_JOIN_CROSS, $1, $3, @1); }
+ | json_table_plan_cross CROSS json_table_plan_primary
+ { $$ = makeJsonTableJoinedPlan(JSTP_JOIN_CROSS, $1, $3, @1); }
+ ;
+
+json_table_plan_primary:
+ json_table_plan_simple
+ { $$ = $1; }
+ | '(' json_table_plan ')'
+ {
+ castNode(JsonTablePlanSpec, $2)->location = @1;
+ $$ = $2;
+ }
+ ;
+
+json_table_default_plan_choices:
+ json_table_default_plan_inner_outer
+ { $$ = $1 | JSTP_JOIN_UNION; }
+ | json_table_default_plan_union_cross
+ { $$ = $1 | JSTP_JOIN_OUTER; }
+ | json_table_default_plan_inner_outer ',' json_table_default_plan_union_cross
+ { $$ = $1 | $3; }
+ | json_table_default_plan_union_cross ',' json_table_default_plan_inner_outer
+ { $$ = $1 | $3; }
+ ;
+
+json_table_default_plan_inner_outer:
+ INNER_P { $$ = JSTP_JOIN_INNER; }
+ | OUTER_P { $$ = JSTP_JOIN_OUTER; }
+ ;
+
+json_table_default_plan_union_cross:
+ UNION { $$ = JSTP_JOIN_UNION; }
+ | CROSS { $$ = JSTP_JOIN_CROSS; }
+ ;
+
/*****************************************************************************
*
* Type syntax
@@ -17441,6 +17702,7 @@ unreserved_keyword:
| MOVE
| NAME_P
| NAMES
+ | NESTED
| NEW
| NEXT
| NFC
@@ -17475,6 +17737,8 @@ unreserved_keyword:
| PARTITION
| PASSING
| PASSWORD
+ | PATH
+ | PLAN
| PLANS
| POLICY
| PRECEDING
@@ -17639,6 +17903,7 @@ col_name_keyword:
| JSON_QUERY
| JSON_SCALAR
| JSON_SERIALIZE
+ | JSON_TABLE
| JSON_VALUE
| LEAST
| NATIONAL
@@ -18007,6 +18272,7 @@ bare_label_keyword:
| JSON_QUERY
| JSON_SCALAR
| JSON_SERIALIZE
+ | JSON_TABLE
| JSON_VALUE
| KEEP
| KEY
@@ -18046,6 +18312,7 @@ bare_label_keyword:
| NATIONAL
| NATURAL
| NCHAR
+ | NESTED
| NEW
| NEXT
| NFC
@@ -18090,7 +18357,9 @@ bare_label_keyword:
| PARTITION
| PASSING
| PASSWORD
+ | PATH
| PLACING
+ | PLAN
| PLANS
| POLICY
| POSITION
@@ -18358,18 +18627,6 @@ makeTypeCast(Node *arg, TypeName *typename, int location)
return (Node *) n;
}
-static Node *
-makeStringConst(char *str, int location)
-{
- A_Const *n = makeNode(A_Const);
-
- n->val.sval.type = T_String;
- n->val.sval.sval = str;
- n->location = location;
-
- return (Node *) n;
-}
-
static Node *
makeStringConstCast(char *str, int location, TypeName *typename)
{
diff --git a/src/backend/parser/meson.build b/src/backend/parser/meson.build
index 8e8295640b..573d70b3d1 100644
--- a/src/backend/parser/meson.build
+++ b/src/backend/parser/meson.build
@@ -10,6 +10,7 @@ backend_sources += files(
'parse_enr.c',
'parse_expr.c',
'parse_func.c',
+ 'parse_jsontable.c',
'parse_merge.c',
'parse_node.c',
'parse_oper.c',
diff --git a/src/backend/parser/parse_clause.c b/src/backend/parser/parse_clause.c
index 4b50278fd0..38e27e8472 100644
--- a/src/backend/parser/parse_clause.c
+++ b/src/backend/parser/parse_clause.c
@@ -697,7 +697,11 @@ transformRangeTableFunc(ParseState *pstate, RangeTableFunc *rtf)
char **names;
int colno;
- /* Currently only XMLTABLE is supported */
+ /*
+ * Currently we only support XMLTABLE here. See transformJsonTable() for
+ * JSON_TABLE support.
+ */
+ tf->functype = TFT_XMLTABLE;
constructName = "XMLTABLE";
docType = XMLOID;
@@ -1104,13 +1108,17 @@ transformFromClauseItem(ParseState *pstate, Node *n,
rtr->rtindex = nsitem->p_rtindex;
return (Node *) rtr;
}
- else if (IsA(n, RangeTableFunc))
+ else if (IsA(n, RangeTableFunc) || IsA(n, JsonTable))
{
/* table function is like a plain relation */
RangeTblRef *rtr;
ParseNamespaceItem *nsitem;
- nsitem = transformRangeTableFunc(pstate, (RangeTableFunc *) n);
+ if (IsA(n, RangeTableFunc))
+ nsitem = transformRangeTableFunc(pstate, (RangeTableFunc *) n);
+ else
+ nsitem = transformJsonTable(pstate, (JsonTable *) n);
+
*top_nsitem = nsitem;
*namespace = list_make1(nsitem);
rtr = makeNode(RangeTblRef);
diff --git a/src/backend/parser/parse_expr.c b/src/backend/parser/parse_expr.c
index 53426fac53..6557b07f04 100644
--- a/src/backend/parser/parse_expr.c
+++ b/src/backend/parser/parse_expr.c
@@ -4219,7 +4219,8 @@ transformJsonSerializeExpr(ParseState *pstate, JsonSerializeExpr *expr)
}
/*
- * Transform JSON_VALUE, JSON_QUERY, JSON_EXISTS functions into a JsonExpr node.
+ * Transform JSON_VALUE, JSON_QUERY, JSON_EXISTS, JSON_TABLE functions into
+ * a JsonExpr node.
*/
static Node *
transformJsonFuncExpr(ParseState *pstate, JsonFuncExpr *func)
@@ -4238,6 +4239,9 @@ transformJsonFuncExpr(ParseState *pstate, JsonFuncExpr *func)
case JSON_VALUE_OP:
func_name = "JSON_VALUE";
break;
+ case JSON_TABLE_OP:
+ func_name = "JSON_TABLE";
+ break;
default:
elog(ERROR, "invalid JsonFuncExpr op");
break;
@@ -4282,6 +4286,42 @@ transformJsonFuncExpr(ParseState *pstate, JsonFuncExpr *func)
jsexpr->returning->typmod = -1;
}
+ /* JSON_TABLE() COLUMNS can specify a non-boolean type. */
+ if (jsexpr->returning->typid != BOOLOID)
+ {
+ Node *coercion_expr;
+ CaseTestExpr *placeholder = makeNode(CaseTestExpr);
+ int location = exprLocation((Node *) jsexpr);
+
+ /*
+ * We abuse CaseTestExpr here as placeholder to pass the
+ * result of evaluating JSON_EXISTS to the coercion
+ * expression.
+ */
+ placeholder->typeId = BOOLOID;
+ placeholder->typeMod = -1;
+ placeholder->collation = InvalidOid;
+
+ coercion_expr =
+ coerce_to_target_type(pstate, (Node *) placeholder, BOOLOID,
+ jsexpr->returning->typid,
+ jsexpr->returning->typmod,
+ COERCION_EXPLICIT,
+ COERCE_IMPLICIT_CAST,
+ location);
+
+ if (coercion_expr == NULL)
+ ereport(ERROR,
+ (errcode(ERRCODE_CANNOT_COERCE),
+ errmsg("cannot cast type %s to %s",
+ format_type_be(BOOLOID),
+ format_type_be(jsexpr->returning->typid)),
+ parser_coercion_errposition(pstate, location, (Node *) jsexpr)));
+
+ if (coercion_expr != (Node *) placeholder)
+ jsexpr->result_coercion = coercion_expr;
+ }
+
jsexpr->on_error = transformJsonBehavior(pstate, func->on_error,
JSON_BEHAVIOR_FALSE,
jsexpr->returning);
@@ -4356,6 +4396,17 @@ transformJsonFuncExpr(ParseState *pstate, JsonFuncExpr *func)
jsexpr->returning);
break;
+ case JSON_TABLE_OP:
+ if (!OidIsValid(jsexpr->returning->typid))
+ {
+ jsexpr->returning->typid = exprType(jsexpr->formatted_expr);
+ jsexpr->returning->typmod = -1;
+ }
+ jsexpr->on_error = transformJsonBehavior(pstate, func->on_error,
+ JSON_BEHAVIOR_EMPTY,
+ jsexpr->returning);
+ break;
+
default:
elog(ERROR, "invalid JsonFuncExpr op");
break;
diff --git a/src/backend/parser/parse_jsontable.c b/src/backend/parser/parse_jsontable.c
new file mode 100644
index 0000000000..a4b41fb9e0
--- /dev/null
+++ b/src/backend/parser/parse_jsontable.c
@@ -0,0 +1,718 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_jsontable.c
+ * parsing of JSON_TABLE
+ *
+ * Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ * src/backend/parser/parse_jsontable.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "postgres.h"
+
+#include "catalog/pg_collation.h"
+#include "catalog/pg_type.h"
+#include "miscadmin.h"
+#include "nodes/makefuncs.h"
+#include "nodes/nodeFuncs.h"
+#include "optimizer/optimizer.h"
+#include "parser/parse_clause.h"
+#include "parser/parse_collate.h"
+#include "parser/parse_expr.h"
+#include "parser/parse_relation.h"
+#include "parser/parse_type.h"
+#include "utils/builtins.h"
+#include "utils/json.h"
+#include "utils/lsyscache.h"
+
+/* Context for JSON_TABLE transformation */
+typedef struct JsonTableParseContext
+{
+ ParseState *pstate; /* parsing state */
+ JsonTable *table; /* untransformed node */
+ TableFunc *tablefunc; /* transformed node */
+ List *pathNames; /* list of all path and columns names */
+ int pathNameId; /* path name id counter */
+ Oid contextItemTypid; /* type oid of context item (json/jsonb) */
+} JsonTableParseContext;
+
+static JsonTablePlan *transformJsonTableColumns(JsonTableParseContext * cxt,
+ JsonTablePlanSpec *planspec,
+ List *columns,
+ JsonTablePathSpec *pathspec);
+
+/*
+ * Transform JSON_TABLE column
+ * - regular column into JSON_VALUE()
+ * - FORMAT JSON column into JSON_QUERY()
+ * - EXISTS column into JSON_EXISTS()
+ */
+static Node *
+transformJsonTableColumn(JsonTableColumn *jtc, Node *contextItemExpr,
+ List *passingArgs, bool errorOnError)
+{
+ JsonFuncExpr *jfexpr = makeNode(JsonFuncExpr);
+ Node *pathspec;
+ JsonFormat *default_format;
+
+ if (jtc->coltype == JTC_REGULAR)
+ jfexpr->op = JSON_VALUE_OP;
+ else if (jtc->coltype == JTC_EXISTS)
+ jfexpr->op = JSON_EXISTS_OP;
+ else
+ jfexpr->op = JSON_QUERY_OP;
+ jfexpr->output = makeNode(JsonOutput);
+ jfexpr->on_empty = jtc->on_empty;
+ jfexpr->on_error = jtc->on_error;
+ if (jfexpr->on_error == NULL && errorOnError)
+ jfexpr->on_error = makeJsonBehavior(JSON_BEHAVIOR_ERROR, NULL,
+ NULL, -1);
+ jfexpr->quotes = jtc->quotes;
+ jfexpr->wrapper = jtc->wrapper;
+ jfexpr->location = jtc->location;
+
+ jfexpr->output->typeName = jtc->typeName;
+ jfexpr->output->returning = makeNode(JsonReturning);
+ jfexpr->output->returning->format = jtc->format;
+
+ default_format = makeJsonFormat(JS_FORMAT_DEFAULT, JS_ENC_DEFAULT, -1);
+
+ if (jtc->pathspec)
+ pathspec = (Node *) jtc->pathspec->string;
+ else
+ {
+ /* Construct default path as '$."column_name"' */
+ StringInfoData path;
+
+ initStringInfo(&path);
+
+ appendStringInfoString(&path, "$.");
+ escape_json(&path, jtc->name);
+
+ pathspec = makeStringConst(path.data, -1);
+ }
+
+ jfexpr->context_item = makeJsonValueExpr((Expr *) contextItemExpr, NULL,
+ default_format);
+ jfexpr->pathspec = pathspec;
+ jfexpr->pathname = NULL;
+ jfexpr->passing = passingArgs;
+
+ return (Node *) jfexpr;
+}
+
+/*
+ * Register a column/path name in the path name list, flagging if the name is
+ * already taken by another column/path.
+ */
+static void
+registerJsonTableColumn(JsonTableParseContext * cxt, char *colname,
+ int location)
+{
+ ListCell *lc;
+
+ foreach(lc, cxt->pathNames)
+ {
+ if (strcmp(colname, (const char *) lfirst(lc)) == 0)
+ ereport(ERROR,
+ errcode(ERRCODE_DUPLICATE_ALIAS),
+ errmsg("duplicate JSON_TABLE column name: %s", colname),
+ parser_errposition(cxt->pstate, location));
+ }
+
+ cxt->pathNames = lappend(cxt->pathNames, colname);
+}
+
+static void
+registerJsonTablePath(JsonTableParseContext * cxt, char *pathname,
+ int location)
+{
+ ListCell *lc;
+
+ foreach(lc, cxt->pathNames)
+ {
+ if (strcmp(pathname, (const char *) lfirst(lc)) == 0)
+ ereport(ERROR,
+ errcode(ERRCODE_DUPLICATE_ALIAS),
+ errmsg("duplicate JSON_TABLE path name: %s", pathname),
+ parser_errposition(cxt->pstate, location));
+ }
+
+ cxt->pathNames = lappend(cxt->pathNames, pathname);
+}
+
+/*
+ * Recursively register all nested column names in the shared columns/path name
+ * list.
+ */
+static void
+registerAllJsonTableColumnsAndPaths(JsonTableParseContext * cxt,
+ List *columns)
+{
+ ListCell *lc;
+
+ foreach(lc, columns)
+ {
+ JsonTableColumn *jtc = castNode(JsonTableColumn, lfirst(lc));
+
+ if (jtc->coltype == JTC_NESTED)
+ {
+ if (jtc->pathspec->name)
+ registerJsonTablePath(cxt, jtc->pathspec->name,
+ jtc->pathspec->name_location);
+
+ registerAllJsonTableColumnsAndPaths(cxt, jtc->columns);
+ }
+ else
+ {
+ registerJsonTableColumn(cxt, jtc->name, jtc->location);
+ }
+ }
+}
+
+/* Generate a new unique JSON_TABLE path name. */
+static char *
+generateJsonTablePathName(JsonTableParseContext * cxt)
+{
+ char namebuf[32];
+ char *name = namebuf;
+
+ snprintf(namebuf, sizeof(namebuf), "json_table_path_%d",
+ cxt->pathNameId++);
+
+ name = pstrdup(name);
+ cxt->pathNames = lappend(cxt->pathNames, name);
+
+ return name;
+}
+
+/* Collect sibling path names from plan to the specified list. */
+static void
+collectSiblingPathsInJsonTablePlan(JsonTablePlanSpec *plan, List **paths)
+{
+ if (plan->plan_type == JSTP_SIMPLE)
+ *paths = lappend(*paths, plan->pathname);
+ else if (plan->plan_type == JSTP_JOINED)
+ {
+ if (plan->join_type == JSTP_JOIN_INNER ||
+ plan->join_type == JSTP_JOIN_OUTER)
+ {
+ Assert(plan->plan1->plan_type == JSTP_SIMPLE);
+ *paths = lappend(*paths, plan->plan1->pathname);
+ }
+ else if (plan->join_type == JSTP_JOIN_CROSS ||
+ plan->join_type == JSTP_JOIN_UNION)
+ {
+ collectSiblingPathsInJsonTablePlan(plan->plan1, paths);
+ collectSiblingPathsInJsonTablePlan(plan->plan2, paths);
+ }
+ else
+ elog(ERROR, "invalid JSON_TABLE join type %d",
+ plan->join_type);
+ }
+}
+
+/*
+ * Validate child JSON_TABLE plan by checking that:
+ * - all nested columns have path names specified
+ * - all nested columns have corresponding node in the sibling plan
+ * - plan does not contain duplicate or extra nodes
+ */
+static void
+validateJsonTableChildPlan(ParseState *pstate, JsonTablePlanSpec *plan,
+ List *columns)
+{
+ ListCell *lc1;
+ List *siblings = NIL;
+ int nchildren = 0;
+
+ if (plan)
+ collectSiblingPathsInJsonTablePlan(plan, &siblings);
+
+ foreach(lc1, columns)
+ {
+ JsonTableColumn *jtc = castNode(JsonTableColumn, lfirst(lc1));
+
+ if (jtc->coltype == JTC_NESTED)
+ {
+ ListCell *lc2;
+ bool found = false;
+
+ if (jtc->pathspec->name == NULL)
+ ereport(ERROR,
+ errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("nested JSON_TABLE columns must contain"
+ " an explicit AS pathname specification"
+ " if an explicit PLAN clause is used"),
+ parser_errposition(pstate, jtc->location));
+
+ /* find nested path name in the list of sibling path names */
+ foreach(lc2, siblings)
+ {
+ if ((found = !strcmp(jtc->pathspec->name, lfirst(lc2))))
+ break;
+ }
+
+ if (!found)
+ ereport(ERROR,
+ errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("invalid JSON_TABLE specification"),
+ errdetail("PLAN clause for nested path %s was not found.",
+ jtc->pathspec->name),
+ parser_errposition(pstate, jtc->location));
+
+ nchildren++;
+ }
+ }
+
+ if (list_length(siblings) > nchildren)
+ ereport(ERROR,
+ errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("invalid JSON_TABLE plan clause"),
+ errdetail("PLAN clause contains some extra or duplicate sibling nodes."),
+ parser_errposition(pstate, plan ? plan->location : -1));
+}
+
+static JsonTableColumn *
+findNestedJsonTableColumn(List *columns, const char *pathname)
+{
+ ListCell *lc;
+
+ foreach(lc, columns)
+ {
+ JsonTableColumn *jtc = castNode(JsonTableColumn, lfirst(lc));
+
+ if (jtc->coltype == JTC_NESTED &&
+ jtc->pathspec->name &&
+ !strcmp(jtc->pathspec->name, pathname))
+ return jtc;
+ }
+
+ return NULL;
+}
+
+static Node *
+transformNestedJsonTableColumn(JsonTableParseContext * cxt, JsonTableColumn *jtc,
+ JsonTablePlanSpec *planspec)
+{
+ if (jtc->pathspec->name == NULL)
+ {
+ if (cxt->table->planspec != NULL)
+ ereport(ERROR,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("invalid JSON_TABLE expression"),
+ errdetail("JSON_TABLE path must contain"
+ " explicit AS pathname specification if"
+ " explicit PLAN clause is used"),
+ parser_errposition(cxt->pstate, jtc->location)));
+
+ jtc->pathspec->name = generateJsonTablePathName(cxt);
+ }
+
+ return (Node *) transformJsonTableColumns(cxt, planspec, jtc->columns,
+ jtc->pathspec);
+}
+
+static Node *
+makeJsonTableSiblingJoin(bool cross, Node *lnode, Node *rnode)
+{
+ JsonTableSibling *join = makeNode(JsonTableSibling);
+
+ join->larg = lnode;
+ join->rarg = rnode;
+ join->cross = cross;
+
+ return (Node *) join;
+}
+
+/*
+ * Recursively transform child JSON_TABLE plan.
+ *
+ * Default plan is transformed into a cross/union join of its nested columns.
+ * Simple and outer/inner plans are transformed into a JsonTablePlan by
+ * finding and transforming corresponding nested column.
+ * Sibling plans are recursively transformed into a JsonTableSibling.
+ */
+static Node *
+transformJsonTableChildPlan(JsonTableParseContext * cxt,
+ JsonTablePlanSpec *plan,
+ List *columns)
+{
+ JsonTableColumn *jtc = NULL;
+
+ if (!plan || plan->plan_type == JSTP_DEFAULT)
+ {
+ /* unspecified or default plan */
+ Node *res = NULL;
+ ListCell *lc;
+ bool cross = plan && (plan->join_type & JSTP_JOIN_CROSS);
+
+ /* transform all nested columns into cross/union join */
+ foreach(lc, columns)
+ {
+ JsonTableColumn *col = castNode(JsonTableColumn, lfirst(lc));
+ Node *node;
+
+ if (col->coltype != JTC_NESTED)
+ continue;
+
+ node = transformNestedJsonTableColumn(cxt, col, plan);
+
+ /* join transformed node with previous sibling nodes */
+ res = res ? makeJsonTableSiblingJoin(cross, res, node) : node;
+ }
+
+ return res;
+ }
+ else if (plan->plan_type == JSTP_SIMPLE)
+ {
+ jtc = findNestedJsonTableColumn(columns, plan->pathname);
+ }
+ else if (plan->plan_type == JSTP_JOINED)
+ {
+ if (plan->join_type == JSTP_JOIN_INNER ||
+ plan->join_type == JSTP_JOIN_OUTER)
+ {
+ Assert(plan->plan1->plan_type == JSTP_SIMPLE);
+ jtc = findNestedJsonTableColumn(columns, plan->plan1->pathname);
+ }
+ else
+ {
+ Node *node1 = transformJsonTableChildPlan(cxt, plan->plan1,
+ columns);
+ Node *node2 = transformJsonTableChildPlan(cxt, plan->plan2,
+ columns);
+
+ return makeJsonTableSiblingJoin(plan->join_type == JSTP_JOIN_CROSS,
+ node1, node2);
+ }
+ }
+ else
+ elog(ERROR, "invalid JSON_TABLE plan type %d", plan->plan_type);
+
+ if (!jtc)
+ ereport(ERROR,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("invalid JSON_TABLE plan clause"),
+ errdetail("PATH name was %s not found in nested columns list.",
+ plan->pathname),
+ parser_errposition(cxt->pstate, plan->location)));
+
+ return transformNestedJsonTableColumn(cxt, jtc, plan);
+}
+
+/* Check whether type is json/jsonb, array, or record. */
+static bool
+typeIsComposite(Oid typid)
+{
+ char typtype;
+
+ if (typid == JSONOID ||
+ typid == JSONBOID ||
+ typid == RECORDOID ||
+ type_is_array(typid))
+ return true;
+
+ typtype = get_typtype(typid);
+
+ if (typtype == TYPTYPE_COMPOSITE)
+ return true;
+
+ if (typtype == TYPTYPE_DOMAIN)
+ return typeIsComposite(getBaseType(typid));
+
+ return false;
+}
+
+/* Append transformed non-nested JSON_TABLE columns to the TableFunc node */
+static void
+appendJsonTableColumns(JsonTableParseContext * cxt, List *columns)
+{
+ ListCell *col;
+ ParseState *pstate = cxt->pstate;
+ JsonTable *jt = cxt->table;
+ TableFunc *tf = cxt->tablefunc;
+ bool ordinality_found = false;
+ JsonBehavior *on_error = jt->on_error;
+ bool errorOnError = on_error &&
+ on_error->btype == JSON_BEHAVIOR_ERROR;
+
+ foreach(col, columns)
+ {
+ JsonTableColumn *rawc = castNode(JsonTableColumn, lfirst(col));
+ Oid typid;
+ int32 typmod;
+ Node *colexpr;
+
+ if (rawc->name)
+ tf->colnames = lappend(tf->colnames,
+ makeString(pstrdup(rawc->name)));
+
+ /*
+ * Determine the type and typmod for the new column. FOR ORDINALITY
+ * columns are INTEGER by standard; the others are user-specified.
+ */
+ switch (rawc->coltype)
+ {
+ case JTC_FOR_ORDINALITY:
+ if (ordinality_found)
+ ereport(ERROR,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("cannot use more than one FOR ORDINALITY column"),
+ parser_errposition(pstate, rawc->location)));
+ ordinality_found = true;
+ colexpr = NULL;
+ typid = INT4OID;
+ typmod = -1;
+ break;
+
+ case JTC_REGULAR:
+ typenameTypeIdAndMod(pstate, rawc->typeName, &typid, &typmod);
+
+ /*
+ * Use implicit FORMAT JSON for composite types (arrays and
+ * records) or if a non-default WRAPPER / QUOTES behavior
+ * is specified.
+ */
+ if (typeIsComposite(typid) ||
+ rawc->quotes != JS_QUOTES_UNSPEC ||
+ rawc->wrapper != JSW_UNSPEC)
+ rawc->coltype = JTC_FORMATTED;
+
+ /* FALLTHROUGH */
+ case JTC_FORMATTED:
+ case JTC_EXISTS:
+ {
+ Node *je;
+ CaseTestExpr *param = makeNode(CaseTestExpr);
+
+ param->collation = InvalidOid;
+ param->typeId = cxt->contextItemTypid;
+ param->typeMod = -1;
+
+ je = transformJsonTableColumn(rawc, (Node *) param,
+ NIL, errorOnError);
+
+ colexpr = transformExpr(pstate, je, EXPR_KIND_FROM_FUNCTION);
+ assign_expr_collations(pstate, colexpr);
+
+ typid = exprType(colexpr);
+ typmod = exprTypmod(colexpr);
+ break;
+ }
+
+ case JTC_NESTED:
+ continue;
+
+ default:
+ elog(ERROR, "unknown JSON_TABLE column type: %d", rawc->coltype);
+ break;
+ }
+
+ tf->coltypes = lappend_oid(tf->coltypes, typid);
+ tf->coltypmods = lappend_int(tf->coltypmods, typmod);
+ tf->colcollations = lappend_oid(tf->colcollations, get_typcollation(typid));
+ tf->colvalexprs = lappend(tf->colvalexprs, colexpr);
+ }
+}
+
+/*
+ * Create transformed JSON_TABLE parent plan node by appending all non-nested
+ * columns to the TableFunc node and remembering their indices in the
+ * colvalexprs list.
+ */
+static JsonTablePlan *
+makeParentJsonTablePlan(JsonTableParseContext * cxt, JsonTablePathSpec *pathspec,
+ List *columns)
+{
+ JsonTablePlan *plan = makeNode(JsonTablePlan);
+ JsonBehavior *on_error = cxt->table->on_error;
+ char *pathstring;
+ Const *value;
+
+ Assert(IsA(pathspec->string, A_Const));
+ pathstring = castNode(A_Const, pathspec->string)->val.sval.sval;
+ value = makeConst(JSONPATHOID, -1, InvalidOid, -1,
+ DirectFunctionCall1(jsonpath_in,
+ CStringGetDatum(pathstring)),
+ false, false);
+ plan->path = makeJsonTablePath(value, pathspec->name);
+
+ /* save start of column range */
+ plan->colMin = list_length(cxt->tablefunc->colvalexprs);
+
+ appendJsonTableColumns(cxt, columns);
+
+ /* save end of column range */
+ plan->colMax = list_length(cxt->tablefunc->colvalexprs) - 1;
+
+ plan->errorOnError = on_error && on_error->btype == JSON_BEHAVIOR_ERROR;
+
+ return plan;
+}
+
+static JsonTablePlan *
+transformJsonTableColumns(JsonTableParseContext * cxt,
+ JsonTablePlanSpec *planspec,
+ List *columns,
+ JsonTablePathSpec *pathspec)
+{
+ JsonTablePlan *plan;
+ JsonTablePlanSpec *childPlanSpec;
+ bool defaultPlan = planspec == NULL ||
+ planspec->plan_type == JSTP_DEFAULT;
+
+ if (defaultPlan)
+ childPlanSpec = planspec;
+ else
+ {
+ /* validate parent and child plans */
+ JsonTablePlanSpec *parentPlanSpec;
+
+ if (planspec->plan_type == JSTP_JOINED)
+ {
+ if (planspec->join_type != JSTP_JOIN_INNER &&
+ planspec->join_type != JSTP_JOIN_OUTER)
+ ereport(ERROR,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("invalid JSON_TABLE plan clause"),
+ errdetail("Expected INNER or OUTER."),
+ parser_errposition(cxt->pstate, planspec->location)));
+
+ parentPlanSpec = planspec->plan1;
+ childPlanSpec = planspec->plan2;
+
+ Assert(parentPlanSpec->plan_type != JSTP_JOINED);
+ Assert(parentPlanSpec->pathname);
+ }
+ else
+ {
+ parentPlanSpec = planspec;
+ childPlanSpec = NULL;
+ }
+
+ if (strcmp(parentPlanSpec->pathname, pathspec->name) != 0)
+ ereport(ERROR,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("invalid JSON_TABLE plan"),
+ errdetail("PATH name mismatch: expected %s but %s is given.",
+ pathspec->name, parentPlanSpec->pathname),
+ parser_errposition(cxt->pstate, planspec->location)));
+
+ validateJsonTableChildPlan(cxt->pstate, childPlanSpec, columns);
+ }
+
+ /* transform only non-nested columns */
+ plan = makeParentJsonTablePlan(cxt, pathspec, columns);
+
+ if (childPlanSpec || defaultPlan)
+ {
+ /* transform recursively nested columns */
+ plan->child = transformJsonTableChildPlan(cxt, childPlanSpec, columns);
+ if (plan->child)
+ plan->outerJoin = planspec == NULL ||
+ (planspec->join_type & JSTP_JOIN_OUTER);
+ /* else: default plan case, no children found */
+ }
+
+ return plan;
+}
+
+/*
+ * transformJsonTable -
+ * Transform a raw JsonTable into TableFunc.
+ *
+ * Transform the document-generating expression, the row-generating expression,
+ * the column-generating expressions, and the default value expressions.
+ */
+ParseNamespaceItem *
+transformJsonTable(ParseState *pstate, JsonTable *jt)
+{
+ JsonTableParseContext cxt;
+ TableFunc *tf = makeNode(TableFunc);
+ JsonFuncExpr *jfe = makeNode(JsonFuncExpr);
+ JsonExpr *je;
+ JsonTablePlanSpec *plan = jt->planspec;
+ JsonTablePathSpec *rootPathSpec = jt->pathspec;
+ bool is_lateral;
+
+ Assert(IsA(rootPathSpec->string, A_Const) &&
+ castNode(A_Const, rootPathSpec->string)->val.node.type == T_String);
+
+ cxt.pstate = pstate;
+ cxt.table = jt;
+ cxt.tablefunc = tf;
+ cxt.pathNames = NIL;
+ cxt.pathNameId = 0;
+
+ if (rootPathSpec->name)
+ registerJsonTablePath(&cxt, rootPathSpec->name,
+ rootPathSpec->name_location);
+ else
+ {
+ if (jt->planspec != NULL)
+ ereport(ERROR,
+ (errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("invalid JSON_TABLE expression"),
+ errdetail("JSON_TABLE path must contain"
+ " explicit AS pathname specification if"
+ " explicit PLAN clause is used"),
+ parser_errposition(pstate, rootPathSpec->location)));
+
+ rootPathSpec->name = generateJsonTablePathName(&cxt);
+ }
+
+ registerAllJsonTableColumnsAndPaths(&cxt, jt->columns);
+
+ jfe->op = JSON_TABLE_OP;
+ jfe->context_item = jt->context_item;
+ jfe->pathspec = (Node *) rootPathSpec->string;
+ jfe->pathname = rootPathSpec->name;
+ jfe->passing = jt->passing;
+ jfe->on_empty = NULL;
+ jfe->on_error = jt->on_error;
+ jfe->location = jt->location;
+
+ /*
+ * We make lateral_only names of this level visible, whether or not the
+ * RangeTableFunc is explicitly marked LATERAL. This is needed for SQL
+ * spec compliance and seems useful on convenience grounds for all
+ * functions in FROM.
+ *
+ * (LATERAL can't nest within a single pstate level, so we don't need
+ * save/restore logic here.)
+ */
+ Assert(!pstate->p_lateral_active);
+ pstate->p_lateral_active = true;
+
+ tf->functype = TFT_JSON_TABLE;
+ tf->docexpr = transformExpr(pstate, (Node *) jfe, EXPR_KIND_FROM_FUNCTION);
+
+ cxt.contextItemTypid = exprType(tf->docexpr);
+
+ tf->plan = (Node *) transformJsonTableColumns(&cxt, plan, jt->columns,
+ rootPathSpec);
+
+ /* Also save a copy of the PASSING arguments in the TableFunc node. */
+ je = (JsonExpr *) tf->docexpr;
+ tf->passingvalexprs = copyObject(je->passing_values);
+
+ tf->ordinalitycol = -1; /* undefine ordinality column number */
+ tf->location = jt->location;
+
+ pstate->p_lateral_active = false;
+
+ /*
+ * Mark the RTE as LATERAL if the user said LATERAL explicitly, or if
+ * there are any lateral cross-references in it.
+ */
+ is_lateral = jt->lateral || contain_vars_of_level((Node *) tf, 0);
+
+ return addRangeTableEntryForTableFunc(pstate,
+ tf, jt->alias, is_lateral, true);
+}
diff --git a/src/backend/parser/parse_relation.c b/src/backend/parser/parse_relation.c
index 65e54abdd1..c2e3e65cc6 100644
--- a/src/backend/parser/parse_relation.c
+++ b/src/backend/parser/parse_relation.c
@@ -2077,13 +2077,15 @@ addRangeTableEntryForTableFunc(ParseState *pstate,
rte->relid = InvalidOid;
rte->subquery = NULL;
rte->tablefunc = tf;
- rte->tablefunc_name = pstrdup("XMLTABLE");
+ rte->tablefunc_name = pstrdup(tf->functype == TFT_XMLTABLE ?
+ "XMLTABLE" : "JSON_TABLE");
rte->coltypes = tf->coltypes;
rte->coltypmods = tf->coltypmods;
rte->colcollations = tf->colcollations;
rte->alias = alias;
- refname = alias ? alias->aliasname : pstrdup("xmltable");
+ refname = alias ? alias->aliasname :
+ pstrdup(tf->functype == TFT_XMLTABLE ? "xmltable" : "json_table");
eref = alias ? copyObject(alias) : makeAlias(refname, NIL);
numaliases = list_length(eref->colnames);
@@ -2096,7 +2098,7 @@ addRangeTableEntryForTableFunc(ParseState *pstate,
ereport(ERROR,
(errcode(ERRCODE_INVALID_COLUMN_REFERENCE),
errmsg("%s function has %d columns available but %d columns specified",
- "XMLTABLE",
+ tf->functype == TFT_XMLTABLE ? "XMLTABLE" : "JSON_TABLE",
list_length(tf->colnames), numaliases)));
rte->eref = eref;
diff --git a/src/backend/parser/parse_target.c b/src/backend/parser/parse_target.c
index ea5ac6bafe..a331ea3270 100644
--- a/src/backend/parser/parse_target.c
+++ b/src/backend/parser/parse_target.c
@@ -2002,6 +2002,9 @@ FigureColnameInternal(Node *node, char **name)
case JSON_VALUE_OP:
*name = "json_value";
return 2;
+ case JSON_TABLE_OP:
+ *name = "json_table";
+ return 2;
}
break;
default:
diff --git a/src/backend/utils/adt/jsonpath_exec.c b/src/backend/utils/adt/jsonpath_exec.c
index 9e8f2bbdbe..cc526f181b 100644
--- a/src/backend/utils/adt/jsonpath_exec.c
+++ b/src/backend/utils/adt/jsonpath_exec.c
@@ -61,10 +61,12 @@
#include "catalog/pg_collation.h"
#include "catalog/pg_type.h"
+#include "executor/execExpr.h"
#include "funcapi.h"
#include "lib/stringinfo.h"
#include "miscadmin.h"
#include "nodes/miscnodes.h"
+#include "nodes/nodeFuncs.h"
#include "regex/regex.h"
#include "utils/builtins.h"
#include "utils/date.h"
@@ -75,6 +77,8 @@
#include "utils/guc.h"
#include "utils/json.h"
#include "utils/jsonpath.h"
+#include "utils/lsyscache.h"
+#include "utils/memutils.h"
#include "utils/timestamp.h"
#include "utils/varlena.h"
@@ -159,6 +163,60 @@ typedef struct JsonValueListIterator
ListCell *next;
} JsonValueListIterator;
+/* Structures for JSON_TABLE execution */
+
+typedef enum JsonTablePlanStateType
+{
+ JSON_TABLE_SCAN_STATE = 0,
+ JSON_TABLE_JOIN_STATE,
+} JsonTablePlanStateType;
+
+typedef struct JsonTablePlanState
+{
+ JsonTablePlanStateType type;
+
+ struct JsonTablePlanState *parent;
+ struct JsonTablePlanState *nested;
+} JsonTablePlanState;
+
+typedef struct JsonTableScanState
+{
+ JsonTablePlanState plan;
+
+ MemoryContext mcxt;
+ JsonPath *path;
+ List *args;
+ JsonValueList found;
+ JsonValueListIterator iter;
+ Datum current;
+ int ordinal;
+ bool currentIsNull;
+ bool outerJoin;
+ bool errorOnError;
+ bool advanceNested;
+ bool reset;
+} JsonTableScanState;
+
+typedef struct JsonTableJoinState
+{
+ JsonTablePlanState plan;
+
+ JsonTablePlanState *left;
+ JsonTablePlanState *right;
+ bool cross;
+ bool advanceRight;
+} JsonTableJoinState;
+
+/* random number to identify JsonTableExecContext */
+#define JSON_TABLE_EXEC_CONTEXT_MAGIC 418352867
+
+typedef struct JsonTableExecContext
+{
+ int magic;
+ JsonTableScanState **colexprscans;
+ JsonTableScanState *root;
+} JsonTableExecContext;
+
/* strict/lax flags is decomposed into four [un]wrap/error flags */
#define jspStrictAbsenceOfErrors(cxt) (!(cxt)->laxMode)
#define jspAutoUnwrap(cxt) ((cxt)->laxMode)
@@ -258,6 +316,7 @@ static JsonPathExecResult getArrayIndex(JsonPathExecContext *cxt,
JsonPathItem *jsp, JsonbValue *jb, int32 *index);
static JsonBaseObjectInfo setBaseObject(JsonPathExecContext *cxt,
JsonbValue *jbv, int32 id);
+static void JsonValueListClear(JsonValueList *jvl);
static void JsonValueListAppend(JsonValueList *jvl, JsonbValue *jbv);
static int JsonValueListLength(const JsonValueList *jvl);
static bool JsonValueListIsEmpty(JsonValueList *jvl);
@@ -277,6 +336,32 @@ static int compareDatetime(Datum val1, Oid typid1, Datum val2, Oid typid2,
static void checkTimezoneIsUsedForCast(bool useTz, const char *type1,
const char *type2);
+
+static JsonTablePlanState * JsonTableInitPlanState(JsonTableExecContext * cxt,
+ Node *plan,
+ JsonTablePlanState * parent);
+static bool JsonTablePlanNextRow(JsonTablePlanState * state);
+static bool JsonTableScanNextRow(JsonTableScanState *scan);
+
+static void JsonTableInitOpaque(TableFuncScanState *state, int natts);
+static void JsonTableSetDocument(TableFuncScanState *state, Datum value);
+static bool JsonTableFetchRow(TableFuncScanState *state);
+static Datum JsonTableGetValue(TableFuncScanState *state, int colnum,
+ Oid typid, int32 typmod, bool *isnull);
+static void JsonTableDestroyOpaque(TableFuncScanState *state);
+
+const TableFuncRoutine JsonbTableRoutine =
+{
+ JsonTableInitOpaque,
+ JsonTableSetDocument,
+ NULL,
+ NULL,
+ NULL,
+ JsonTableFetchRow,
+ JsonTableGetValue,
+ JsonTableDestroyOpaque
+};
+
/****************** User interface to JsonPath executor ********************/
/*
@@ -3388,6 +3473,13 @@ setBaseObject(JsonPathExecContext *cxt, JsonbValue *jbv, int32 id)
return baseObject;
}
+static void
+JsonValueListClear(JsonValueList *jvl)
+{
+ jvl->singleton = NULL;
+ jvl->list = NULL;
+}
+
static void
JsonValueListAppend(JsonValueList *jvl, JsonbValue *jbv)
{
@@ -3923,3 +4015,458 @@ JsonPathValue(Datum jb, JsonPath *jp, bool *empty, bool *error, List *vars)
return res;
}
+
+/************************ JSON_TABLE functions ***************************/
+
+/*
+ * Returns private data from executor state. Ensure validity by check with
+ * MAGIC number.
+ */
+static inline JsonTableExecContext *
+GetJsonTableExecContext(TableFuncScanState *state, const char *fname)
+{
+ JsonTableExecContext *result;
+
+ if (!IsA(state, TableFuncScanState))
+ elog(ERROR, "%s called with invalid TableFuncScanState", fname);
+ result = (JsonTableExecContext *) state->opaque;
+ if (result->magic != JSON_TABLE_EXEC_CONTEXT_MAGIC)
+ elog(ERROR, "%s called with invalid TableFuncScanState", fname);
+
+ return result;
+}
+
+/* Recursively initialize JSON_TABLE scan / join state */
+static JsonTableJoinState *
+JsonTableInitJoinState(JsonTableExecContext * cxt, JsonTableSibling *plan,
+ JsonTablePlanState * parent)
+{
+ JsonTableJoinState *join = palloc0(sizeof(*join));
+
+ join->plan.type = JSON_TABLE_JOIN_STATE;
+ /* parent and nested not set. */
+
+ join->cross = plan->cross;
+ join->left = JsonTableInitPlanState(cxt, plan->larg, parent);
+ join->right = JsonTableInitPlanState(cxt, plan->rarg, parent);
+
+ return join;
+}
+
+static JsonTableScanState *
+JsonTableInitScanState(JsonTableExecContext * cxt,
+ JsonTablePlan *plan,
+ JsonTablePlanState *parent,
+ List *args, MemoryContext mcxt)
+{
+ JsonTableScanState *scan = palloc0(sizeof(*scan));
+ int i;
+
+ scan->plan.type = JSON_TABLE_SCAN_STATE;
+ scan->plan.parent = parent;
+
+ scan->outerJoin = plan->outerJoin;
+ scan->errorOnError = plan->errorOnError;
+ scan->path = DatumGetJsonPathP(plan->path->value->constvalue);
+ scan->args = args;
+ scan->mcxt = AllocSetContextCreate(mcxt, "JsonTableExecContext",
+ ALLOCSET_DEFAULT_SIZES);
+
+ /*
+ * Set after settings scan->args and scan->mcxt, because the recursive
+ * call wants to use those values.
+ */
+ scan->plan.nested = plan->child ?
+ JsonTableInitPlanState(cxt, plan->child, (JsonTablePlanState *) scan) :
+ NULL;
+
+ scan->current = PointerGetDatum(NULL);
+ scan->currentIsNull = true;
+
+ for (i = plan->colMin; i <= plan->colMax; i++)
+ cxt->colexprscans[i] = scan;
+
+ return scan;
+}
+
+/* Recursively initialize JSON_TABLE scan state */
+static JsonTablePlanState *
+JsonTableInitPlanState(JsonTableExecContext * cxt, Node *plan,
+ JsonTablePlanState * parent)
+{
+ JsonTablePlanState *state;
+
+ if (IsA(plan, JsonTableSibling))
+ {
+ JsonTableSibling *join = (JsonTableSibling *) plan;
+
+ state = (JsonTablePlanState *)
+ JsonTableInitJoinState(cxt, join, parent);
+ }
+ else
+ {
+ JsonTablePlan *scan = castNode(JsonTablePlan, plan);
+ JsonTableScanState *parent_scan = (JsonTableScanState *) parent;
+
+ Assert(parent_scan);
+ state = (JsonTablePlanState *)
+ JsonTableInitScanState(cxt, scan, parent, parent_scan->args,
+ parent_scan->mcxt);
+ }
+
+ return state;
+}
+
+/*
+ * JsonTableInitOpaque
+ * Fill in TableFuncScanState->opaque for JsonTable processor
+ */
+static void
+JsonTableInitOpaque(TableFuncScanState *state, int natts)
+{
+ JsonTableExecContext *cxt;
+ PlanState *ps = &state->ss.ps;
+ TableFuncScan *tfs = castNode(TableFuncScan, ps->plan);
+ TableFunc *tf = tfs->tablefunc;
+ JsonTablePlan *root = castNode(JsonTablePlan, tf->plan);
+ JsonExpr *je = castNode(JsonExpr, tf->docexpr);
+ List *args = NIL;
+
+ cxt = palloc0(sizeof(JsonTableExecContext));
+ cxt->magic = JSON_TABLE_EXEC_CONTEXT_MAGIC;
+
+ if (state->passingvalexprs)
+ {
+ ListCell *exprlc;
+ ListCell *namelc;
+
+ Assert(list_length(state->passingvalexprs) ==
+ list_length(je->passing_names));
+ forboth(exprlc, state->passingvalexprs,
+ namelc, je->passing_names)
+ {
+ ExprState *state = lfirst_node(ExprState, exprlc);
+ String *name = lfirst_node(String, namelc);
+ JsonPathVariable *var = palloc(sizeof(*var));
+
+ var->name = pstrdup(name->sval);
+ var->typid = exprType((Node *) state->expr);
+ var->typmod = exprTypmod((Node *) state->expr);
+
+ /*
+ * Evaluate the expression and save the value to be returned by
+ * GetJsonPathVar().
+ */
+ var->value = ExecEvalExpr(state, ps->ps_ExprContext,
+ &var->isnull);
+
+ args = lappend(args, var);
+ }
+ }
+
+ cxt->colexprscans = palloc(sizeof(JsonTableScanState *) *
+ list_length(tf->colvalexprs));
+
+ cxt->root = JsonTableInitScanState(cxt, root, NULL, args,
+ CurrentMemoryContext);
+ state->opaque = cxt;
+}
+
+/* Reset scan iterator to the beginning of the item list */
+static void
+JsonTableRescan(JsonTableScanState *scan)
+{
+ JsonValueListInitIterator(&scan->found, &scan->iter);
+ scan->current = PointerGetDatum(NULL);
+ scan->currentIsNull = true;
+ scan->advanceNested = false;
+ scan->ordinal = 0;
+}
+
+/* Reset context item of a scan, execute JSON path and reset a scan */
+static void
+JsonTableResetContextItem(JsonTableScanState *scan, Datum item)
+{
+ MemoryContext oldcxt;
+ JsonPathExecResult res;
+ Jsonb *js = (Jsonb *) DatumGetJsonbP(item);
+
+ JsonValueListClear(&scan->found);
+
+ MemoryContextResetOnly(scan->mcxt);
+
+ oldcxt = MemoryContextSwitchTo(scan->mcxt);
+
+ res = executeJsonPath(scan->path, scan->args,
+ GetJsonPathVar, CountJsonPathVars,
+ js, scan->errorOnError, &scan->found,
+ false /* FIXME */ );
+
+ MemoryContextSwitchTo(oldcxt);
+
+ if (jperIsError(res))
+ {
+ Assert(!scan->errorOnError);
+ JsonValueListClear(&scan->found); /* EMPTY ON ERROR case */
+ }
+
+ JsonTableRescan(scan);
+}
+
+/*
+ * JsonTableSetDocument
+ * Install the input document
+ */
+static void
+JsonTableSetDocument(TableFuncScanState *state, Datum value)
+{
+ JsonTableExecContext *cxt =
+ GetJsonTableExecContext(state, "JsonTableSetDocument");
+
+ JsonTableResetContextItem(cxt->root, value);
+}
+
+/* Recursively reset scan and its child nodes */
+static void
+JsonTableRescanRecursive(JsonTablePlanState * state)
+{
+ if (state->type == JSON_TABLE_JOIN_STATE)
+ {
+ JsonTableJoinState *join = (JsonTableJoinState *) state;
+
+ JsonTableRescanRecursive(join->left);
+ JsonTableRescanRecursive(join->right);
+ join->advanceRight = false;
+ }
+ else
+ {
+ JsonTableScanState *scan = (JsonTableScanState *) state;
+
+ Assert(state->type == JSON_TABLE_SCAN_STATE);
+ JsonTableRescan(scan);
+ if (scan->plan.nested)
+ JsonTableRescanRecursive(scan->plan.nested);
+ }
+}
+
+/*
+ * Fetch next row from a cross/union joined scan.
+ *
+ * Returns false at the end of a scan, true otherwise.
+ */
+static bool
+JsonTablePlanNextRow(JsonTablePlanState * state)
+{
+ JsonTableJoinState *join;
+
+ if (state->type == JSON_TABLE_SCAN_STATE)
+ return JsonTableScanNextRow((JsonTableScanState *) state);
+
+ join = (JsonTableJoinState *) state;
+ if (join->advanceRight)
+ {
+ /* fetch next inner row */
+ if (JsonTablePlanNextRow(join->right))
+ return true;
+
+ /* inner rows are exhausted */
+ if (join->cross)
+ join->advanceRight = false; /* next outer row */
+ else
+ return false; /* end of scan */
+ }
+
+ while (!join->advanceRight)
+ {
+ /* fetch next outer row */
+ bool more = JsonTablePlanNextRow(join->left);
+
+ if (join->cross)
+ {
+ if (!more)
+ return false; /* end of scan */
+
+ JsonTableRescanRecursive(join->right);
+
+ if (!JsonTablePlanNextRow(join->right))
+ continue; /* next outer row */
+
+ join->advanceRight = true; /* next inner row */
+ }
+ else if (!more)
+ {
+ if (!JsonTablePlanNextRow(join->right))
+ return false; /* end of scan */
+
+ join->advanceRight = true; /* next inner row */
+ }
+
+ break;
+ }
+
+ return true;
+}
+
+/* Recursively set 'reset' flag of scan and its child nodes */
+static void
+JsonTablePlanReset(JsonTablePlanState * state)
+{
+ if (state->type == JSON_TABLE_JOIN_STATE)
+ {
+ JsonTableJoinState *join = (JsonTableJoinState *) state;
+
+ JsonTablePlanReset(join->left);
+ JsonTablePlanReset(join->right);
+ join->advanceRight = false;
+ }
+ else
+ {
+ JsonTableScanState *scan;
+
+ Assert(state->type == JSON_TABLE_SCAN_STATE);
+ scan = (JsonTableScanState *) state;
+ scan->reset = true;
+ scan->advanceNested = false;
+
+ if (scan->plan.nested)
+ JsonTablePlanReset(scan->plan.nested);
+ }
+}
+
+/*
+ * Fetch next row from a simple scan with outer/inner joined nested subscans.
+ *
+ * Returns false at the end of a scan, true otherwise.
+ */
+static bool
+JsonTableScanNextRow(JsonTableScanState *scan)
+{
+ /* reset context item if requested */
+ if (scan->reset)
+ {
+ JsonTableScanState *parent_scan =
+ (JsonTableScanState *) scan->plan.parent;
+
+ Assert(parent_scan && !parent_scan->currentIsNull);
+ JsonTableResetContextItem(scan, parent_scan->current);
+ scan->reset = false;
+ }
+
+ if (scan->advanceNested)
+ {
+ /* fetch next nested row */
+ scan->advanceNested = JsonTablePlanNextRow(scan->plan.nested);
+
+ if (scan->advanceNested)
+ return true;
+ }
+
+ for (;;)
+ {
+ /* fetch next row */
+ JsonbValue *jbv = JsonValueListNext(&scan->found, &scan->iter);
+ MemoryContext oldcxt;
+
+ if (!jbv)
+ {
+ scan->current = PointerGetDatum(NULL);
+ scan->currentIsNull = true;
+ return false; /* end of scan */
+ }
+
+ /* set current row item */
+ oldcxt = MemoryContextSwitchTo(scan->mcxt);
+ scan->current = JsonbPGetDatum(JsonbValueToJsonb(jbv));
+ scan->currentIsNull = false;
+ MemoryContextSwitchTo(oldcxt);
+
+ scan->ordinal++;
+
+ if (!scan->plan.nested)
+ break;
+
+ JsonTablePlanReset(scan->plan.nested);
+
+ scan->advanceNested = JsonTablePlanNextRow(scan->plan.nested);
+
+ if (scan->advanceNested || scan->outerJoin)
+ break;
+ }
+
+ return true;
+}
+
+/*
+ * JsonTableFetchRow
+ * Prepare the next "current" tuple for upcoming GetValue calls.
+ * Returns false if no more rows can be returned.
+ */
+static bool
+JsonTableFetchRow(TableFuncScanState *state)
+{
+ JsonTableExecContext *cxt =
+ GetJsonTableExecContext(state, "JsonTableFetchRow");
+
+ return JsonTableScanNextRow(cxt->root);
+}
+
+/*
+ * JsonTableGetValue
+ * Return the value for column number 'colnum' for the current row.
+ *
+ * This leaks memory, so be sure to reset often the context in which it's
+ * called.
+ */
+static Datum
+JsonTableGetValue(TableFuncScanState *state, int colnum,
+ Oid typid, int32 typmod, bool *isnull)
+{
+ JsonTableExecContext *cxt =
+ GetJsonTableExecContext(state, "JsonTableGetValue");
+ ExprContext *econtext = state->ss.ps.ps_ExprContext;
+ ExprState *estate = list_nth(state->colvalexprs, colnum);
+ JsonTableScanState *scan = cxt->colexprscans[colnum];
+ Datum result;
+
+ if (scan->currentIsNull) /* NULL from outer/union join */
+ {
+ result = (Datum) 0;
+ *isnull = true;
+ }
+ else if (estate) /* regular column */
+ {
+ Datum saved_caseValue = econtext->caseValue_datum;
+ bool saved_caseIsNull = econtext->caseValue_isNull;
+
+ /* Pass the value for CaseTestExpr that may be present in colexpr */
+ econtext->caseValue_datum = scan->current;
+ econtext->caseValue_isNull = false;
+
+ result = ExecEvalExpr(estate, econtext, isnull);
+
+ econtext->caseValue_datum = saved_caseValue;
+ econtext->caseValue_isNull = saved_caseIsNull;
+ }
+ else
+ {
+ result = Int32GetDatum(scan->ordinal); /* ordinality column */
+ *isnull = false;
+ }
+
+ return result;
+}
+
+/*
+ * JsonTableDestroyOpaque
+ */
+static void
+JsonTableDestroyOpaque(TableFuncScanState *state)
+{
+ JsonTableExecContext *cxt =
+ GetJsonTableExecContext(state, "JsonTableDestroyOpaque");
+
+ /* not valid anymore */
+ cxt->magic = 0;
+
+ state->opaque = NULL;
+}
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index 865656cba2..2c9519786d 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -521,6 +521,8 @@ static char *flatten_reloptions(Oid relid);
static void get_reloptions(StringInfo buf, Datum reloptions);
static void get_json_path_spec(Node *path_spec, deparse_context *context,
bool showimplicit);
+static void get_json_table_columns(TableFunc *tf, JsonTablePlan *node,
+ deparse_context *context, bool showimplicit);
#define only_marker(rte) ((rte)->inh ? "" : "ONLY ")
@@ -8627,7 +8629,8 @@ get_json_behavior(JsonBehavior *behavior, deparse_context *context,
/*
* get_json_expr_options
*
- * Parse back common options for JSON_QUERY, JSON_VALUE, JSON_EXISTS.
+ * Parse back common options for JSON_QUERY, JSON_VALUE, JSON_EXISTS and
+ * JSON_TABLE columns.
*/
static void
get_json_expr_options(JsonExpr *jsexpr, deparse_context *context,
@@ -9874,6 +9877,9 @@ get_rule_expr(Node *node, deparse_context *context,
case JSON_VALUE_OP:
appendStringInfoString(buf, "JSON_VALUE(");
break;
+ default:
+ elog(ERROR, "unexpected JsonExpr type: %d", jexpr->op);
+ break;
}
get_rule_expr(jexpr->formatted_expr, context, showimplicit);
@@ -11240,16 +11246,14 @@ get_sublink_expr(SubLink *sublink, deparse_context *context)
/* ----------
- * get_tablefunc - Parse back a table function
+ * get_xmltable - Parse back a XMLTABLE function
* ----------
*/
static void
-get_tablefunc(TableFunc *tf, deparse_context *context, bool showimplicit)
+get_xmltable(TableFunc *tf, deparse_context *context, bool showimplicit)
{
StringInfo buf = context->buf;
- /* XMLTABLE is the only existing implementation. */
-
appendStringInfoString(buf, "XMLTABLE(");
if (tf->ns_uris != NIL)
@@ -11340,6 +11344,271 @@ get_tablefunc(TableFunc *tf, deparse_context *context, bool showimplicit)
appendStringInfoChar(buf, ')');
}
+/*
+ * get_json_nested_columns - Parse back nested JSON_TABLE columns
+ */
+static void
+get_json_table_nested_columns(TableFunc *tf, Node *node,
+ deparse_context *context, bool showimplicit,
+ bool needcomma)
+{
+ if (IsA(node, JsonTableSibling))
+ {
+ JsonTableSibling *n = (JsonTableSibling *) node;
+
+ get_json_table_nested_columns(tf, n->larg, context, showimplicit,
+ needcomma);
+ get_json_table_nested_columns(tf, n->rarg, context, showimplicit, true);
+ }
+ else
+ {
+ JsonTablePlan *n = castNode(JsonTablePlan, node);
+
+ if (needcomma)
+ appendStringInfoChar(context->buf, ',');
+
+ appendStringInfoChar(context->buf, ' ');
+ appendContextKeyword(context, "NESTED PATH ", 0, 0, 0);
+ get_const_expr(n->path->value, context, -1);
+ appendStringInfo(context->buf, " AS %s", quote_identifier(n->path->name));
+ get_json_table_columns(tf, n, context, showimplicit);
+ }
+}
+
+/*
+ * get_json_table_plan - Parse back a JSON_TABLE plan
+ */
+static void
+get_json_table_plan(TableFunc *tf, Node *node, deparse_context *context,
+ bool parenthesize)
+{
+ if (parenthesize)
+ appendStringInfoChar(context->buf, '(');
+
+ if (IsA(node, JsonTableSibling))
+ {
+ JsonTableSibling *n = (JsonTableSibling *) node;
+
+ get_json_table_plan(tf, n->larg, context,
+ IsA(n->larg, JsonTableSibling) ||
+ castNode(JsonTablePlan, n->larg)->child);
+
+ appendStringInfoString(context->buf, n->cross ? " CROSS " : " UNION ");
+
+ get_json_table_plan(tf, n->rarg, context,
+ IsA(n->rarg, JsonTableSibling) ||
+ castNode(JsonTablePlan, n->rarg)->child);
+ }
+ else
+ {
+ JsonTablePlan *n = castNode(JsonTablePlan, node);
+
+ appendStringInfoString(context->buf, quote_identifier(n->path->name));
+
+ if (n->child)
+ {
+ appendStringInfoString(context->buf,
+ n->outerJoin ? " OUTER " : " INNER ");
+ get_json_table_plan(tf, n->child, context,
+ IsA(n->child, JsonTableSibling));
+ }
+ }
+
+ if (parenthesize)
+ appendStringInfoChar(context->buf, ')');
+}
+
+/*
+ * get_json_table_columns - Parse back JSON_TABLE columns
+ */
+static void
+get_json_table_columns(TableFunc *tf, JsonTablePlan *plan,
+ deparse_context *context, bool showimplicit)
+{
+ StringInfo buf = context->buf;
+ JsonExpr *jexpr = castNode(JsonExpr, tf->docexpr);
+ ListCell *lc_colname;
+ ListCell *lc_coltype;
+ ListCell *lc_coltypmod;
+ ListCell *lc_colvalexpr;
+ int colnum = 0;
+
+ appendStringInfoChar(buf, ' ');
+ appendContextKeyword(context, "COLUMNS (", 0, 0, 0);
+
+ if (PRETTY_INDENT(context))
+ context->indentLevel += PRETTYINDENT_VAR;
+
+ forfour(lc_colname, tf->colnames,
+ lc_coltype, tf->coltypes,
+ lc_coltypmod, tf->coltypmods,
+ lc_colvalexpr, tf->colvalexprs)
+ {
+ char *colname = strVal(lfirst(lc_colname));
+ JsonExpr *colexpr;
+ Oid typid;
+ int32 typmod;
+ bool ordinality;
+ JsonBehaviorType default_behavior;
+
+ typid = lfirst_oid(lc_coltype);
+ typmod = lfirst_int(lc_coltypmod);
+ colexpr = castNode(JsonExpr, lfirst(lc_colvalexpr));
+
+ if (colnum < plan->colMin)
+ {
+ colnum++;
+ continue;
+ }
+
+ if (colnum > plan->colMax)
+ break;
+
+ if (colnum > plan->colMin)
+ appendStringInfoString(buf, ", ");
+
+ colnum++;
+
+ ordinality = !colexpr;
+
+ appendContextKeyword(context, "", 0, 0, 0);
+
+ appendStringInfo(buf, "%s %s", quote_identifier(colname),
+ ordinality ? "FOR ORDINALITY" :
+ format_type_with_typemod(typid, typmod));
+ if (ordinality)
+ continue;
+
+ if (colexpr->op == JSON_EXISTS_OP)
+ {
+ appendStringInfoString(buf, " EXISTS");
+ default_behavior = JSON_BEHAVIOR_FALSE;
+ }
+ else
+ {
+ if (colexpr->op == JSON_QUERY_OP)
+ {
+ char typcategory;
+ bool typispreferred;
+
+ get_type_category_preferred(typid, &typcategory, &typispreferred);
+
+ if (typcategory == TYPCATEGORY_STRING)
+ appendStringInfoString(buf,
+ colexpr->format->format_type == JS_FORMAT_JSONB ?
+ " FORMAT JSONB" : " FORMAT JSON");
+ }
+
+ default_behavior = JSON_BEHAVIOR_NULL;
+ }
+
+ if (jexpr->on_error->btype == JSON_BEHAVIOR_ERROR)
+ default_behavior = JSON_BEHAVIOR_ERROR;
+
+ appendStringInfoString(buf, " PATH ");
+
+ get_json_path_spec(colexpr->path_spec, context, showimplicit);
+
+ get_json_expr_options(colexpr, context, default_behavior);
+ }
+
+ if (plan->child)
+ get_json_table_nested_columns(tf, plan->child, context, showimplicit,
+ plan->colMax >= plan->colMin);
+
+ if (PRETTY_INDENT(context))
+ context->indentLevel -= PRETTYINDENT_VAR;
+
+ appendContextKeyword(context, ")", 0, 0, 0);
+}
+
+/* ----------
+ * get_json_table - Parse back a JSON_TABLE function
+ * ----------
+ */
+static void
+get_json_table(TableFunc *tf, deparse_context *context, bool showimplicit)
+{
+ StringInfo buf = context->buf;
+ JsonExpr *jexpr = castNode(JsonExpr, tf->docexpr);
+ JsonTablePlan *root = castNode(JsonTablePlan, tf->plan);
+
+ appendStringInfoString(buf, "JSON_TABLE(");
+
+ if (PRETTY_INDENT(context))
+ context->indentLevel += PRETTYINDENT_VAR;
+
+ appendContextKeyword(context, "", 0, 0, 0);
+
+ get_rule_expr(jexpr->formatted_expr, context, showimplicit);
+
+ appendStringInfoString(buf, ", ");
+
+ get_const_expr(root->path->value, context, -1);
+
+ appendStringInfo(buf, " AS %s", quote_identifier(root->path->name));
+
+ if (jexpr->passing_values)
+ {
+ ListCell *lc1,
+ *lc2;
+ bool needcomma = false;
+
+ appendStringInfoChar(buf, ' ');
+ appendContextKeyword(context, "PASSING ", 0, 0, 0);
+
+ if (PRETTY_INDENT(context))
+ context->indentLevel += PRETTYINDENT_VAR;
+
+ forboth(lc1, jexpr->passing_names,
+ lc2, jexpr->passing_values)
+ {
+ if (needcomma)
+ appendStringInfoString(buf, ", ");
+ needcomma = true;
+
+ appendContextKeyword(context, "", 0, 0, 0);
+
+ get_rule_expr((Node *) lfirst(lc2), context, false);
+ appendStringInfo(buf, " AS %s",
+ quote_identifier((lfirst_node(String, lc1))->sval)
+ );
+ }
+
+ if (PRETTY_INDENT(context))
+ context->indentLevel -= PRETTYINDENT_VAR;
+ }
+
+ get_json_table_columns(tf, root, context, showimplicit);
+
+ appendStringInfoChar(buf, ' ');
+ appendContextKeyword(context, "PLAN ", 0, 0, 0);
+ get_json_table_plan(tf, (Node *) root, context, true);
+
+ if (jexpr->on_error->btype != JSON_BEHAVIOR_EMPTY)
+ get_json_behavior(jexpr->on_error, context, "ERROR");
+
+ if (PRETTY_INDENT(context))
+ context->indentLevel -= PRETTYINDENT_VAR;
+
+ appendContextKeyword(context, ")", 0, 0, 0);
+}
+
+/* ----------
+ * get_tablefunc - Parse back a table function
+ * ----------
+ */
+static void
+get_tablefunc(TableFunc *tf, deparse_context *context, bool showimplicit)
+{
+ /* XMLTABLE and JSON_TABLE are the only existing implementations. */
+
+ if (tf->functype == TFT_XMLTABLE)
+ get_xmltable(tf, context, showimplicit);
+ else if (tf->functype == TFT_JSON_TABLE)
+ get_json_table(tf, context, showimplicit);
+}
+
/* ----------
* get_from_clause - Parse back a FROM clause
*
diff --git a/src/include/nodes/execnodes.h b/src/include/nodes/execnodes.h
index 1961d9e0aa..eeda02e7ac 100644
--- a/src/include/nodes/execnodes.h
+++ b/src/include/nodes/execnodes.h
@@ -1969,6 +1969,8 @@ typedef struct TableFuncScanState
ExprState *rowexpr; /* state for row-generating expression */
List *colexprs; /* state for column-generating expression */
List *coldefexprs; /* state for column default expressions */
+ List *colvalexprs; /* state for column value expression */
+ List *passingvalexprs; /* state for PASSING argument expression */
List *ns_names; /* same as TableFunc.ns_names */
List *ns_uris; /* list of states of namespace URI exprs */
Bitmapset *notnulls; /* nullability flag for each output column */
diff --git a/src/include/nodes/makefuncs.h b/src/include/nodes/makefuncs.h
index 91d95fc52b..6d210684a8 100644
--- a/src/include/nodes/makefuncs.h
+++ b/src/include/nodes/makefuncs.h
@@ -100,6 +100,7 @@ extern IndexInfo *makeIndexInfo(int numattrs, int numkeyattrs, Oid amoid,
bool isready, bool concurrent,
bool summarizing);
+extern Node *makeStringConst(char *str, int location);
extern DefElem *makeDefElem(char *name, Node *arg, int location);
extern DefElem *makeDefElemExtended(char *nameSpace, char *name, Node *arg,
DefElemAction defaction, int location);
@@ -114,6 +115,14 @@ extern JsonValueExpr *makeJsonValueExpr(Expr *raw_expr, Expr *formatted_expr,
JsonFormat *format);
extern JsonBehavior *makeJsonBehavior(JsonBehaviorType type, Node *expr,
JsonCoercion *coercion, int location);
+extern JsonTablePath *makeJsonTablePath(Const *pathvalue, char *pathname);
+extern Node *makeJsonTablePathSpec(char *string, char *name,
+ int string_location, int name_location);
+extern Node *makeJsonTableDefaultPlan(JsonTablePlanJoinType join_type,
+ int location);
+extern Node *makeJsonTableSimplePlan(char *pathname, int location);
+extern Node *makeJsonTableJoinedPlan(JsonTablePlanJoinType type,
+ Node *plan1, Node *plan2, int location);
extern Node *makeJsonKeyValue(Node *key, Node *value);
extern Node *makeJsonIsPredicate(Node *expr, JsonFormat *format,
JsonValueType item_type, bool unique_keys,
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 9ba6ec6a7e..4b2030e98d 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -1750,6 +1750,7 @@ typedef struct JsonFuncExpr
JsonExprOp op; /* expression type */
JsonValueExpr *context_item; /* context item expression */
Node *pathspec; /* JSON path specification expression */
+ char *pathname; /* path name, if any */
List *passing; /* list of PASSING clause arguments, if any */
JsonOutput *output; /* output clause, if specified */
JsonBehavior *on_empty; /* ON EMPTY behavior */
@@ -1759,6 +1760,114 @@ typedef struct JsonFuncExpr
int location; /* token location, or -1 if unknown */
} JsonFuncExpr;
+/*
+ * JsonTablePathSpec
+ * untransformed specification of JSON path expression with an optional
+ * name
+ */
+typedef struct JsonTablePathSpec
+{
+ NodeTag type;
+
+ Node *string;
+ char *name;
+ int name_location;
+ int location; /* location of 'string' */
+} JsonTablePathSpec;
+
+/*
+ * JsonTableColumnType -
+ * enumeration of JSON_TABLE column types
+ */
+typedef enum JsonTableColumnType
+{
+ JTC_FOR_ORDINALITY,
+ JTC_REGULAR,
+ JTC_EXISTS,
+ JTC_FORMATTED,
+ JTC_NESTED,
+} JsonTableColumnType;
+
+/*
+ * JsonTableColumn -
+ * untransformed representation of JSON_TABLE column
+ */
+typedef struct JsonTableColumn
+{
+ NodeTag type;
+ JsonTableColumnType coltype; /* column type */
+ char *name; /* column name */
+ TypeName *typeName; /* column type name */
+ JsonTablePathSpec *pathspec; /* JSON path specification */
+ JsonFormat *format; /* JSON format clause, if specified */
+ JsonWrapper wrapper; /* WRAPPER behavior for formatted columns */
+ JsonQuotes quotes; /* omit or keep quotes on scalar strings? */
+ List *columns; /* nested columns */
+ JsonBehavior *on_empty; /* ON EMPTY behavior */
+ JsonBehavior *on_error; /* ON ERROR behavior */
+ int location; /* token location, or -1 if unknown */
+} JsonTableColumn;
+
+/*
+ * JsonTablePlanType -
+ * flags for JSON_TABLE plan node types representation
+ */
+typedef enum JsonTablePlanType
+{
+ JSTP_DEFAULT,
+ JSTP_SIMPLE,
+ JSTP_JOINED,
+} JsonTablePlanType;
+
+/*
+ * JsonTablePlanJoinType -
+ * JSON_TABLE join types for JSTP_JOINED plans
+ */
+typedef enum JsonTablePlanJoinType
+{
+ JSTP_JOIN_INNER,
+ JSTP_JOIN_OUTER,
+ JSTP_JOIN_CROSS,
+ JSTP_JOIN_UNION,
+} JsonTablePlanJoinType;
+
+/*
+ * JsonTablePlanSpec -
+ * untransformed representation of JSON_TABLE's PLAN clause
+ */
+typedef struct JsonTablePlanSpec
+{
+ NodeTag type;
+
+ JsonTablePlanType plan_type; /* plan type */
+ JsonTablePlanJoinType join_type; /* join type (for joined plan only) */
+ char *pathname; /* path name (for simple plan only) */
+
+ /* For joined plans */
+ struct JsonTablePlanSpec *plan1; /* first joined plan */
+ struct JsonTablePlanSpec *plan2; /* second joined plan */
+
+ int location; /* token location, or -1 if unknown */
+} JsonTablePlanSpec;
+
+/*
+ * JsonTable -
+ * untransformed representation of JSON_TABLE
+ */
+typedef struct JsonTable
+{
+ NodeTag type;
+ JsonValueExpr *context_item; /* context item expression */
+ JsonTablePathSpec *pathspec; /* JSON path specification */
+ List *passing; /* list of PASSING clause arguments, if any */
+ List *columns; /* list of JsonTableColumn */
+ JsonTablePlanSpec *planspec; /* join plan, if specified */
+ JsonBehavior *on_error; /* ON ERROR behavior */
+ Alias *alias; /* table alias in FROM clause */
+ bool lateral; /* does it have LATERAL prefix? */
+ int location; /* token location, or -1 if unknown */
+} JsonTable;
+
/*
* JsonKeyValue -
* untransformed representation of JSON object key-value pair for
diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h
index fad2dd9092..250afda93b 100644
--- a/src/include/nodes/primnodes.h
+++ b/src/include/nodes/primnodes.h
@@ -94,8 +94,14 @@ typedef struct RangeVar
int location;
} RangeVar;
+typedef enum TableFuncType
+{
+ TFT_XMLTABLE,
+ TFT_JSON_TABLE,
+} TableFuncType;
+
/*
- * TableFunc - node for a table function, such as XMLTABLE.
+ * TableFunc - node for a table function, such as XMLTABLE or JSON_TABLE.
*
* Entries in the ns_names list are either String nodes containing
* literal namespace names, or NULL pointers to represent DEFAULT.
@@ -103,6 +109,8 @@ typedef struct RangeVar
typedef struct TableFunc
{
NodeTag type;
+ /* XMLTABLE or JSON_TABLE */
+ TableFuncType functype;
/* list of namespace URI expressions */
List *ns_uris pg_node_attr(query_jumble_ignore);
/* list of namespace names or NULL */
@@ -123,8 +131,14 @@ typedef struct TableFunc
List *colexprs;
/* list of column default expressions */
List *coldefexprs pg_node_attr(query_jumble_ignore);
+ /* list of column value expressions */
+ List *colvalexprs pg_node_attr(query_jumble_ignore);
+ /* list of PASSING argument expressions */
+ List *passingvalexprs pg_node_attr(query_jumble_ignore);
/* nullability flag for each output column */
Bitmapset *notnulls pg_node_attr(query_jumble_ignore);
+ /* JSON_TABLE plan */
+ Node *plan pg_node_attr(query_jumble_ignore);
/* counts from 0; -1 if none specified */
int ordinalitycol pg_node_attr(query_jumble_ignore);
/* token location, or -1 if unknown */
@@ -1561,6 +1575,7 @@ typedef enum JsonExprOp
JSON_VALUE_OP, /* JSON_VALUE() */
JSON_QUERY_OP, /* JSON_QUERY() */
JSON_EXISTS_OP, /* JSON_EXISTS() */
+ JSON_TABLE_OP, /* JSON_TABLE() */
} JsonExprOp;
/*
@@ -1850,6 +1865,49 @@ typedef struct JsonExpr
int location;
} JsonExpr;
+/*
+ * JsonTablePath
+ * A JSON path expression to be computed as part of evaluating
+ * a JSON_TABLE plan node
+ */
+typedef struct JsonTablePath
+{
+ NodeTag type;
+
+ Const *value;
+ char *name;
+} JsonTablePath;
+
+/*
+ * JsonTableSpec -
+ * transformed representation of a JSON_TABLE plan
+ */
+typedef struct JsonTablePlan
+{
+ NodeTag type;
+
+ JsonTablePath *path;
+ Node *child; /* nested columns, if any */
+ bool outerJoin; /* outer or inner join for nested columns? */
+ int colMin; /* min column index in the resulting column
+ * list */
+ int colMax; /* max column index in the resulting column
+ * list */
+ bool errorOnError; /* ERROR/EMPTY ON ERROR behavior */
+} JsonTablePlan;
+
+/*
+ * JsonTableSibling -
+ * transformed representation of joined sibling JSON_TABLE plan node
+ */
+typedef struct JsonTableSibling
+{
+ NodeTag type;
+ Node *larg; /* left join node */
+ Node *rarg; /* right join node */
+ bool cross; /* cross or union join? */
+} JsonTableSibling;
+
/* ----------------
* NullTest
*
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 94e1cb4dce..e2bbeeb209 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -242,6 +242,7 @@ PG_KEYWORD("json_objectagg", JSON_OBJECTAGG, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("json_query", JSON_QUERY, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("json_scalar", JSON_SCALAR, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("json_serialize", JSON_SERIALIZE, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("json_table", JSON_TABLE, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("json_value", JSON_VALUE, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("keep", KEEP, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("key", KEY, UNRESERVED_KEYWORD, BARE_LABEL)
@@ -284,6 +285,7 @@ PG_KEYWORD("names", NAMES, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("national", NATIONAL, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("natural", NATURAL, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("nchar", NCHAR, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("nested", NESTED, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("new", NEW, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("next", NEXT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("nfc", NFC, UNRESERVED_KEYWORD, BARE_LABEL)
@@ -334,7 +336,9 @@ PG_KEYWORD("partial", PARTIAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("partition", PARTITION, 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)
PG_KEYWORD("placing", PLACING, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("plan", PLAN, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("plans", PLANS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("policy", POLICY, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("position", POSITION, COL_NAME_KEYWORD, BARE_LABEL)
diff --git a/src/include/parser/parse_clause.h b/src/include/parser/parse_clause.h
index 3829db0fc4..e71762b10c 100644
--- a/src/include/parser/parse_clause.h
+++ b/src/include/parser/parse_clause.h
@@ -51,4 +51,7 @@ extern List *addTargetToSortList(ParseState *pstate, TargetEntry *tle,
extern Index assignSortGroupRef(TargetEntry *tle, List *tlist);
extern bool targetIsInSortList(TargetEntry *tle, Oid sortop, List *sortList);
+/* functions in parse_jsontable.c */
+extern ParseNamespaceItem *transformJsonTable(ParseState *pstate, JsonTable *jt);
+
#endif /* PARSE_CLAUSE_H */
diff --git a/src/include/utils/jsonpath.h b/src/include/utils/jsonpath.h
index 0f4b1ebc9f..2c673b7dea 100644
--- a/src/include/utils/jsonpath.h
+++ b/src/include/utils/jsonpath.h
@@ -15,6 +15,7 @@
#define JSONPATH_H
#include "fmgr.h"
+#include "executor/tablefunc.h"
#include "nodes/pg_list.h"
#include "nodes/primnodes.h"
#include "utils/jsonb.h"
@@ -303,4 +304,6 @@ extern Datum JsonPathQuery(Datum jb, JsonPath *jp, JsonWrapper wrapper,
extern JsonbValue *JsonPathValue(Datum jb, JsonPath *jp, bool *empty,
bool *error, List *vars);
+extern PGDLLIMPORT const TableFuncRoutine JsonbTableRoutine;
+
#endif
diff --git a/src/interfaces/ecpg/test/ecpg_schedule b/src/interfaces/ecpg/test/ecpg_schedule
index f9c0a0e3c0..254a0bacc7 100644
--- a/src/interfaces/ecpg/test/ecpg_schedule
+++ b/src/interfaces/ecpg/test/ecpg_schedule
@@ -52,6 +52,7 @@ test: sql/oldexec
test: sql/quote
test: sql/show
test: sql/sqljson
+test: sql/sqljson_jsontable
test: sql/insupd
test: sql/parser
test: sql/prepareas
diff --git a/src/interfaces/ecpg/test/expected/sql-sqljson_jsontable.c b/src/interfaces/ecpg/test/expected/sql-sqljson_jsontable.c
new file mode 100644
index 0000000000..0bbf444318
--- /dev/null
+++ b/src/interfaces/ecpg/test/expected/sql-sqljson_jsontable.c
@@ -0,0 +1,132 @@
+/* Processed by ecpg (regression mode) */
+/* These include files are added by the preprocessor */
+#include <ecpglib.h>
+#include <ecpgerrno.h>
+#include <sqlca.h>
+/* End of automatic include section */
+#define ECPGdebug(X,Y) ECPGdebug((X)+100,(Y))
+
+#line 1 "sqljson_jsontable.pgc"
+#include <stdio.h>
+
+
+#line 1 "sqlca.h"
+#ifndef POSTGRES_SQLCA_H
+#define POSTGRES_SQLCA_H
+
+#ifndef PGDLLIMPORT
+#if defined(WIN32) || defined(__CYGWIN__)
+#define PGDLLIMPORT __declspec (dllimport)
+#else
+#define PGDLLIMPORT
+#endif /* __CYGWIN__ */
+#endif /* PGDLLIMPORT */
+
+#define SQLERRMC_LEN 150
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+struct sqlca_t
+{
+ char sqlcaid[8];
+ long sqlabc;
+ long sqlcode;
+ struct
+ {
+ int sqlerrml;
+ char sqlerrmc[SQLERRMC_LEN];
+ } sqlerrm;
+ char sqlerrp[8];
+ long sqlerrd[6];
+ /* Element 0: empty */
+ /* 1: OID of processed tuple if applicable */
+ /* 2: number of rows processed */
+ /* after an INSERT, UPDATE or */
+ /* DELETE statement */
+ /* 3: empty */
+ /* 4: empty */
+ /* 5: empty */
+ char sqlwarn[8];
+ /* Element 0: set to 'W' if at least one other is 'W' */
+ /* 1: if 'W' at least one character string */
+ /* value was truncated when it was */
+ /* stored into a host variable. */
+
+ /*
+ * 2: if 'W' a (hopefully) non-fatal notice occurred
+ */ /* 3: empty */
+ /* 4: empty */
+ /* 5: empty */
+ /* 6: empty */
+ /* 7: empty */
+
+ char sqlstate[5];
+};
+
+struct sqlca_t *ECPGget_sqlca(void);
+
+#ifndef POSTGRES_ECPG_INTERNAL
+#define sqlca (*ECPGget_sqlca())
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+#line 3 "sqljson_jsontable.pgc"
+
+
+#line 1 "regression.h"
+
+
+
+
+
+
+#line 4 "sqljson_jsontable.pgc"
+
+
+/* exec sql whenever sqlerror sqlprint ; */
+#line 6 "sqljson_jsontable.pgc"
+
+
+int
+main ()
+{
+ ECPGdebug (1, stderr);
+
+ { ECPGconnect(__LINE__, 0, "ecpg1_regression" , NULL, NULL , NULL, 0);
+#line 13 "sqljson_jsontable.pgc"
+
+if (sqlca.sqlcode < 0) sqlprint();}
+#line 13 "sqljson_jsontable.pgc"
+
+ { ECPGsetcommit(__LINE__, "on", NULL);
+#line 14 "sqljson_jsontable.pgc"
+
+if (sqlca.sqlcode < 0) sqlprint();}
+#line 14 "sqljson_jsontable.pgc"
+
+
+ { ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select * from json_table ( jsonb 'null' , '$[*]' as p0 columns ( nested '$' as p1 columns ( nested path '$' as p11 columns ( foo int ) , nested path '$' as p12 columns ( bar int ) ) , nested path '$' as p2 columns ( nested path '$' as p21 columns ( baz int ) ) ) plan ( p1 ) ) jt", ECPGt_EOIT, ECPGt_EORT);
+#line 26 "sqljson_jsontable.pgc"
+
+if (sqlca.sqlcode < 0) sqlprint();}
+#line 26 "sqljson_jsontable.pgc"
+
+ // error
+
+ { ECPGdisconnect(__LINE__, "CURRENT");
+#line 29 "sqljson_jsontable.pgc"
+
+if (sqlca.sqlcode < 0) sqlprint();}
+#line 29 "sqljson_jsontable.pgc"
+
+
+ return 0;
+}
diff --git a/src/interfaces/ecpg/test/expected/sql-sqljson_jsontable.stderr b/src/interfaces/ecpg/test/expected/sql-sqljson_jsontable.stderr
new file mode 100644
index 0000000000..5881fdb5ee
--- /dev/null
+++ b/src/interfaces/ecpg/test/expected/sql-sqljson_jsontable.stderr
@@ -0,0 +1,20 @@
+[NO_PID]: ECPGdebug: set to 1
+[NO_PID]: sqlca: code: 0, state: 00000
+[NO_PID]: ECPGconnect: opening database ecpg1_regression on <DEFAULT> port <DEFAULT>
+[NO_PID]: sqlca: code: 0, state: 00000
+[NO_PID]: ECPGsetcommit on line 14: action "on"; connection "ecpg1_regression"
+[NO_PID]: sqlca: code: 0, state: 00000
+[NO_PID]: ecpg_execute on line 16: query: select * from json_table ( jsonb 'null' , '$[*]' as p0 columns ( nested '$' as p1 columns ( nested path '$' as p11 columns ( foo int ) , nested path '$' as p12 columns ( bar int ) ) , nested path '$' as p2 columns ( nested path '$' as p21 columns ( baz int ) ) ) plan ( p1 ) ) jt; with 0 parameter(s) on connection ecpg1_regression
+[NO_PID]: sqlca: code: 0, state: 00000
+[NO_PID]: ecpg_execute on line 16: using PQexec
+[NO_PID]: sqlca: code: 0, state: 00000
+[NO_PID]: ecpg_check_PQresult on line 16: bad response - ERROR: invalid JSON_TABLE plan
+LINE 1: ...ted path '$' as p21 columns ( baz int ) ) ) plan ( p1 ) ) jt
+ ^
+DETAIL: PATH name mismatch: expected p0 but p1 is given.
+[NO_PID]: sqlca: code: 0, state: 00000
+[NO_PID]: raising sqlstate 42601 (sqlcode -400): invalid JSON_TABLE plan on line 16
+[NO_PID]: sqlca: code: -400, state: 42601
+SQL error: invalid JSON_TABLE plan on line 16
+[NO_PID]: ecpg_finish: connection ecpg1_regression closed
+[NO_PID]: sqlca: code: 0, state: 00000
diff --git a/src/interfaces/ecpg/test/expected/sql-sqljson_jsontable.stdout b/src/interfaces/ecpg/test/expected/sql-sqljson_jsontable.stdout
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/src/interfaces/ecpg/test/sql/Makefile b/src/interfaces/ecpg/test/sql/Makefile
index d8213b25ce..7f032659b9 100644
--- a/src/interfaces/ecpg/test/sql/Makefile
+++ b/src/interfaces/ecpg/test/sql/Makefile
@@ -24,6 +24,7 @@ TESTS = array array.c \
quote quote.c \
show show.c \
sqljson sqljson.c \
+ sqljson_jsontable sqljson_jsontable.c \
insupd insupd.c \
twophase twophase.c \
insupd insupd.c \
diff --git a/src/interfaces/ecpg/test/sql/meson.build b/src/interfaces/ecpg/test/sql/meson.build
index 12f28e0a24..88a3acb9af 100644
--- a/src/interfaces/ecpg/test/sql/meson.build
+++ b/src/interfaces/ecpg/test/sql/meson.build
@@ -26,6 +26,7 @@ pgc_files = [
'show',
'sqlda',
'sqljson',
+ 'sqljson_jsontable',
'twophase',
]
diff --git a/src/interfaces/ecpg/test/sql/sqljson_jsontable.pgc b/src/interfaces/ecpg/test/sql/sqljson_jsontable.pgc
new file mode 100644
index 0000000000..06f8a2b634
--- /dev/null
+++ b/src/interfaces/ecpg/test/sql/sqljson_jsontable.pgc
@@ -0,0 +1,32 @@
+#include <stdio.h>
+
+EXEC SQL INCLUDE sqlca;
+exec sql include ../regression;
+
+EXEC SQL WHENEVER SQLERROR sqlprint;
+
+int
+main ()
+{
+ ECPGdebug (1, stderr);
+
+ EXEC SQL CONNECT TO REGRESSDB1;
+ EXEC SQL SET AUTOCOMMIT = ON;
+
+ EXEC SQL SELECT * FROM JSON_TABLE(jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p1)) jt;
+ // error
+
+ EXEC SQL DISCONNECT;
+
+ return 0;
+}
diff --git a/src/test/regress/expected/sqljson_jsontable.out b/src/test/regress/expected/sqljson_jsontable.out
new file mode 100644
index 0000000000..f7ae70a006
--- /dev/null
+++ b/src/test/regress/expected/sqljson_jsontable.out
@@ -0,0 +1,1333 @@
+-- JSON_TABLE
+-- Should fail (JSON_TABLE can be used only in FROM clause)
+SELECT JSON_TABLE('[]', '$');
+ERROR: syntax error at or near "("
+LINE 1: SELECT JSON_TABLE('[]', '$');
+ ^
+-- Should fail (json argument not supported)
+SELECT * FROM JSON_TABLE(NULL FORMAT JSON, '$' COLUMNS (foo text));
+ERROR: JSON_TABLE() is not yet implemented for the json type
+LINE 1: SELECT * FROM JSON_TABLE(NULL FORMAT JSON, '$' COLUMNS (foo ...
+ ^
+HINT: Try casting the argument to jsonb
+-- Should fail (no columns)
+SELECT * FROM JSON_TABLE(NULL, '$' COLUMNS ());
+ERROR: syntax error at or near ")"
+LINE 1: SELECT * FROM JSON_TABLE(NULL, '$' COLUMNS ());
+ ^
+SELECT * FROM JSON_TABLE (NULL::jsonb, '$' COLUMNS (v1 timestamp)) AS f (v1, v2);
+ERROR: JSON_TABLE function has 1 columns available but 2 columns specified
+-- NULL => empty table
+SELECT * FROM JSON_TABLE(NULL::jsonb, '$' COLUMNS (foo int)) bar;
+ foo
+-----
+(0 rows)
+
+--
+SELECT * FROM JSON_TABLE(jsonb '123', '$'
+ COLUMNS (item int PATH '$', foo int)) bar;
+ item | foo
+------+-----
+ 123 |
+(1 row)
+
+-- JSON_TABLE: basic functionality
+CREATE DOMAIN jsonb_test_domain AS text CHECK (value <> 'foo');
+CREATE TEMP TABLE json_table_test (js) AS
+ (VALUES
+ ('1'),
+ ('[]'),
+ ('{}'),
+ ('[1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""]')
+ );
+-- Regular "unformatted" columns
+SELECT *
+FROM json_table_test vals
+ LEFT OUTER JOIN
+ JSON_TABLE(
+ vals.js::jsonb, 'lax $[*]'
+ COLUMNS (
+ id FOR ORDINALITY,
+ "int" int PATH '$',
+ "text" text PATH '$',
+ "char(4)" char(4) PATH '$',
+ "bool" bool PATH '$',
+ "numeric" numeric PATH '$',
+ "domain" jsonb_test_domain PATH '$',
+ js json PATH '$',
+ jb jsonb PATH '$'
+ )
+ ) jt
+ ON true;
+ js | id | int | text | char(4) | bool | numeric | domain | js | jb
+---------------------------------------------------------------------------------------+----+-----+---------+---------+------+---------+---------+--------------+--------------
+ 1 | 1 | 1 | 1 | 1 | | 1 | 1 | 1 | 1
+ [] | | | | | | | | |
+ {} | 1 | | | | | | | {} | {}
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 1 | 1 | 1 | 1 | | 1 | 1 | 1 | 1
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 2 | 1 | 1.23 | 1.23 | | 1.23 | 1.23 | 1.23 | 1.23
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 3 | 2 | 2 | 2 | | 2 | 2 | "2" | "2"
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 4 | | aaaaaaa | aaaa | | | aaaaaaa | "aaaaaaa" | "aaaaaaa"
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 5 | | foo | foo | | | | "foo" | "foo"
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 6 | | | | | | | null | null
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 7 | 0 | false | fals | f | | false | false | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 8 | 1 | true | true | t | | true | true | true
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 9 | | | | | | | {"aaa": 123} | {"aaa": 123}
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 10 | | [1,2] | [1,2 | | | [1,2] | "[1,2]" | "[1,2]"
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 11 | | "str" | "str | | | "str" | "\"str\"" | "\"str\""
+(14 rows)
+
+-- "formatted" columns
+SELECT *
+FROM json_table_test vals
+ LEFT OUTER JOIN
+ JSON_TABLE(
+ vals.js::jsonb, 'lax $[*]'
+ COLUMNS (
+ id FOR ORDINALITY,
+ jst text FORMAT JSON PATH '$',
+ jsc char(4) FORMAT JSON PATH '$',
+ jsv varchar(4) FORMAT JSON PATH '$',
+ jsb jsonb FORMAT JSON PATH '$',
+ jsbq jsonb FORMAT JSON PATH '$' OMIT QUOTES
+ )
+ ) jt
+ ON true;
+ js | id | jst | jsc | jsv | jsb | jsbq
+---------------------------------------------------------------------------------------+----+--------------+------+------+--------------+--------------
+ 1 | 1 | 1 | 1 | 1 | 1 | 1
+ [] | | | | | |
+ {} | 1 | {} | {} | {} | {} | {}
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 1 | 1 | 1 | 1 | 1 | 1
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 2 | 1.23 | 1.23 | 1.23 | 1.23 | 1.23
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 3 | "2" | "2" | "2" | "2" | 2
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 4 | "aaaaaaa" | "aaa | "aaa | "aaaaaaa" |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 5 | "foo" | "foo | "foo | "foo" |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 6 | null | null | null | null | null
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 7 | false | fals | fals | false | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 8 | true | true | true | true | true
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 9 | {"aaa": 123} | {"aa | {"aa | {"aaa": 123} | {"aaa": 123}
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 10 | "[1,2]" | "[1, | "[1, | "[1,2]" | [1, 2]
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 11 | "\"str\"" | "\"s | "\"s | "\"str\"" | "str"
+(14 rows)
+
+-- EXISTS columns
+SELECT *
+FROM json_table_test vals
+ LEFT OUTER JOIN
+ JSON_TABLE(
+ vals.js::jsonb, 'lax $[*]'
+ COLUMNS (
+ id FOR ORDINALITY,
+ exists1 bool EXISTS PATH '$.aaa',
+ exists2 int EXISTS PATH '$.aaa',
+ exists3 int EXISTS PATH 'strict $.aaa' UNKNOWN ON ERROR,
+ exists4 text EXISTS PATH 'strict $.aaa' FALSE ON ERROR
+ )
+ ) jt
+ ON true;
+ js | id | exists1 | exists2 | exists3 | exists4
+---------------------------------------------------------------------------------------+----+---------+---------+---------+---------
+ 1 | 1 | f | 0 | | false
+ [] | | | | |
+ {} | 1 | f | 0 | | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 1 | f | 0 | | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 2 | f | 0 | | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 3 | f | 0 | | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 4 | f | 0 | | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 5 | f | 0 | | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 6 | f | 0 | | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 7 | f | 0 | | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 8 | f | 0 | | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 9 | t | 1 | 1 | true
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 10 | f | 0 | | false
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 11 | f | 0 | | false
+(14 rows)
+
+-- Other miscellanous checks
+SELECT *
+FROM json_table_test vals
+ LEFT OUTER JOIN
+ JSON_TABLE(
+ vals.js::jsonb, 'lax $[*]'
+ COLUMNS (
+ id FOR ORDINALITY,
+ aaa int, -- "aaa" has implicit path '$."aaa"'
+ aaa1 int PATH '$.aaa',
+ js2 json PATH '$',
+ jsb2w jsonb PATH '$' WITH WRAPPER,
+ jsb2q jsonb PATH '$' OMIT QUOTES,
+ ia int[] PATH '$',
+ ta text[] PATH '$',
+ jba jsonb[] PATH '$'
+ )
+ ) jt
+ ON true;
+ js | id | aaa | aaa1 | js2 | jsb2w | jsb2q | ia | ta | jba
+---------------------------------------------------------------------------------------+----+-----+------+--------------+----------------+--------------+----+----+-----
+ 1 | 1 | | | 1 | [1] | 1 | | |
+ [] | | | | | | | | |
+ {} | 1 | | | {} | [{}] | {} | | |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 1 | | | 1 | [1] | 1 | | |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 2 | | | 1.23 | [1.23] | 1.23 | | |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 3 | | | "2" | ["2"] | 2 | | |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 4 | | | "aaaaaaa" | ["aaaaaaa"] | | | |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 5 | | | "foo" | ["foo"] | | | |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 6 | | | null | [null] | null | | |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 7 | | | false | [false] | false | | |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 8 | | | true | [true] | true | | |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 9 | 123 | 123 | {"aaa": 123} | [{"aaa": 123}] | {"aaa": 123} | | |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 10 | | | "[1,2]" | ["[1,2]"] | [1, 2] | | |
+ [1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""] | 11 | | | "\"str\"" | ["\"str\""] | "str" | | |
+(14 rows)
+
+-- JSON_TABLE: Test backward parsing
+CREATE VIEW jsonb_table_view1 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ id FOR ORDINALITY,
+ NESTED PATH '$[1]' AS p1 COLUMNS (
+ a1 int,
+ NESTED PATH '$[*]' AS "p1 1" COLUMNS (
+ a11 text
+ ),
+ b1 text
+ ),
+ NESTED PATH '$[2]' AS p2 COLUMNS (
+ NESTED PATH '$[*]' AS "p2:1" COLUMNS (
+ a21 text
+ ),
+ NESTED PATH '$[*]' AS p22 COLUMNS (
+ a22 text
+ )
+ )
+ )
+ );
+CREATE VIEW jsonb_table_view2 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ "int" int PATH '$',
+ "text" text PATH '$',
+ "char(4)" char(4) PATH '$',
+ "bool" bool PATH '$',
+ "numeric" numeric PATH '$',
+ "domain" jsonb_test_domain PATH '$'));
+CREATE VIEW jsonb_table_view3 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ js json PATH '$',
+ jb jsonb PATH '$',
+ jst text FORMAT JSON PATH '$',
+ jsc char(4) FORMAT JSON PATH '$',
+ jsv varchar(4) FORMAT JSON PATH '$'));
+CREATE VIEW jsonb_table_view4 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ jsb jsonb FORMAT JSON PATH '$',
+ jsbq jsonb FORMAT JSON PATH '$' OMIT QUOTES,
+ aaa int, -- implicit path '$."aaa"',
+ aaa1 int PATH '$.aaa'));
+CREATE VIEW jsonb_table_view5 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ exists1 bool EXISTS PATH '$.aaa',
+ exists2 int EXISTS PATH '$.aaa' TRUE ON ERROR,
+ exists3 text EXISTS PATH 'strict $.aaa' UNKNOWN ON ERROR));
+CREATE VIEW jsonb_table_view6 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ js2 json PATH '$',
+ jsb2w jsonb PATH '$' WITH WRAPPER,
+ jsb2q jsonb PATH '$' OMIT QUOTES,
+ ia int[] PATH '$',
+ ta text[] PATH '$',
+ jba jsonb[] PATH '$'));
+\sv jsonb_table_view1
+CREATE OR REPLACE VIEW public.jsonb_table_view1 AS
+ SELECT id,
+ a1,
+ b1,
+ a11,
+ a21,
+ a22
+ FROM JSON_TABLE(
+ 'null'::jsonb, '$[*]' AS json_table_path_0
+ PASSING
+ 1 + 2 AS a,
+ '"foo"'::json AS "b c"
+ COLUMNS (
+ id FOR ORDINALITY,
+ NESTED PATH '$[1]' AS p1
+ COLUMNS (
+ a1 integer PATH '$."a1"',
+ b1 text PATH '$."b1"',
+ NESTED PATH '$[*]' AS "p1 1"
+ COLUMNS (
+ a11 text PATH '$."a11"'
+ )
+ ),
+ NESTED PATH '$[2]' AS p2
+ COLUMNS (
+ NESTED PATH '$[*]' AS "p2:1"
+ COLUMNS (
+ a21 text PATH '$."a21"'
+ ),
+ NESTED PATH '$[*]' AS p22
+ COLUMNS (
+ a22 text PATH '$."a22"'
+ )
+ )
+ )
+ PLAN (json_table_path_0 OUTER ((p1 OUTER "p1 1") UNION (p2 OUTER ("p2:1" UNION p22))))
+ )
+\sv jsonb_table_view2
+CREATE OR REPLACE VIEW public.jsonb_table_view2 AS
+ SELECT "int",
+ text,
+ "char(4)",
+ bool,
+ "numeric",
+ domain
+ FROM JSON_TABLE(
+ 'null'::jsonb, '$[*]' AS json_table_path_0
+ PASSING
+ 1 + 2 AS a,
+ '"foo"'::json AS "b c"
+ COLUMNS (
+ "int" integer PATH '$',
+ text text PATH '$',
+ "char(4)" character(4) PATH '$',
+ bool boolean PATH '$',
+ "numeric" numeric PATH '$',
+ domain jsonb_test_domain PATH '$'
+ )
+ PLAN (json_table_path_0)
+ )
+\sv jsonb_table_view3
+CREATE OR REPLACE VIEW public.jsonb_table_view3 AS
+ SELECT js,
+ jb,
+ jst,
+ jsc,
+ jsv
+ FROM JSON_TABLE(
+ 'null'::jsonb, '$[*]' AS json_table_path_0
+ PASSING
+ 1 + 2 AS a,
+ '"foo"'::json AS "b c"
+ COLUMNS (
+ js json PATH '$',
+ jb jsonb PATH '$',
+ jst text FORMAT JSON PATH '$',
+ jsc character(4) FORMAT JSON PATH '$',
+ jsv character varying(4) FORMAT JSON PATH '$'
+ )
+ PLAN (json_table_path_0)
+ )
+\sv jsonb_table_view4
+CREATE OR REPLACE VIEW public.jsonb_table_view4 AS
+ SELECT jsb,
+ jsbq,
+ aaa,
+ aaa1
+ FROM JSON_TABLE(
+ 'null'::jsonb, '$[*]' AS json_table_path_0
+ PASSING
+ 1 + 2 AS a,
+ '"foo"'::json AS "b c"
+ COLUMNS (
+ jsb jsonb PATH '$',
+ jsbq jsonb PATH '$' OMIT QUOTES,
+ aaa integer PATH '$."aaa"',
+ aaa1 integer PATH '$."aaa"'
+ )
+ PLAN (json_table_path_0)
+ )
+\sv jsonb_table_view5
+CREATE OR REPLACE VIEW public.jsonb_table_view5 AS
+ SELECT exists1,
+ exists2,
+ exists3
+ FROM JSON_TABLE(
+ 'null'::jsonb, '$[*]' AS json_table_path_0
+ PASSING
+ 1 + 2 AS a,
+ '"foo"'::json AS "b c"
+ COLUMNS (
+ exists1 boolean EXISTS PATH '$."aaa"',
+ exists2 integer EXISTS PATH '$."aaa"' TRUE ON ERROR,
+ exists3 text EXISTS PATH 'strict $."aaa"' UNKNOWN ON ERROR
+ )
+ PLAN (json_table_path_0)
+ )
+\sv jsonb_table_view6
+CREATE OR REPLACE VIEW public.jsonb_table_view6 AS
+ SELECT js2,
+ jsb2w,
+ jsb2q,
+ ia,
+ ta,
+ jba
+ FROM JSON_TABLE(
+ 'null'::jsonb, '$[*]' AS json_table_path_0
+ PASSING
+ 1 + 2 AS a,
+ '"foo"'::json AS "b c"
+ COLUMNS (
+ js2 json PATH '$',
+ jsb2w jsonb PATH '$' WITH UNCONDITIONAL WRAPPER,
+ jsb2q jsonb PATH '$' OMIT QUOTES,
+ ia integer[] PATH '$',
+ ta text[] PATH '$',
+ jba jsonb[] PATH '$'
+ )
+ PLAN (json_table_path_0)
+ )
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view1;
+ QUERY PLAN
+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ Table Function Scan on "JSON_TABLE" "json_table"
+ Output: "json_table".id, "json_table".a1, "json_table".b1, "json_table".a11, "json_table".a21, "json_table".a22
+ Table Function Call: JSON_TABLE('null'::jsonb, '$[*]' AS json_table_path_0 PASSING 3 AS a, '"foo"'::jsonb AS "b c" COLUMNS (id FOR ORDINALITY, NESTED PATH '$[1]' AS p1 COLUMNS (a1 integer PATH '$."a1"', b1 text PATH '$."b1"', NESTED PATH '$[*]' AS "p1 1" COLUMNS (a11 text PATH '$."a11"')), NESTED PATH '$[2]' AS p2 COLUMNS ( NESTED PATH '$[*]' AS "p2:1" COLUMNS (a21 text PATH '$."a21"'), NESTED PATH '$[*]' AS p22 COLUMNS (a22 text PATH '$."a22"'))) PLAN (json_table_path_0 OUTER ((p1 OUTER "p1 1") UNION (p2 OUTER ("p2:1" UNION p22)))))
+(3 rows)
+
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view2;
+ QUERY PLAN
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ Table Function Scan on "JSON_TABLE" "json_table"
+ Output: "json_table"."int", "json_table".text, "json_table"."char(4)", "json_table".bool, "json_table"."numeric", "json_table".domain
+ Table Function Call: JSON_TABLE('null'::jsonb, '$[*]' AS json_table_path_0 PASSING 3 AS a, '"foo"'::jsonb AS "b c" COLUMNS ("int" integer PATH '$', text text PATH '$', "char(4)" character(4) PATH '$', bool boolean PATH '$', "numeric" numeric PATH '$', domain jsonb_test_domain PATH '$') PLAN (json_table_path_0))
+(3 rows)
+
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view3;
+ QUERY PLAN
+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ Table Function Scan on "JSON_TABLE" "json_table"
+ Output: "json_table".js, "json_table".jb, "json_table".jst, "json_table".jsc, "json_table".jsv
+ Table Function Call: JSON_TABLE('null'::jsonb, '$[*]' AS json_table_path_0 PASSING 3 AS a, '"foo"'::jsonb AS "b c" COLUMNS (js json PATH '$', jb jsonb PATH '$', jst text FORMAT JSON PATH '$', jsc character(4) FORMAT JSON PATH '$', jsv character varying(4) FORMAT JSON PATH '$') PLAN (json_table_path_0))
+(3 rows)
+
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view4;
+ QUERY PLAN
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ Table Function Scan on "JSON_TABLE" "json_table"
+ Output: "json_table".jsb, "json_table".jsbq, "json_table".aaa, "json_table".aaa1
+ Table Function Call: JSON_TABLE('null'::jsonb, '$[*]' AS json_table_path_0 PASSING 3 AS a, '"foo"'::jsonb AS "b c" COLUMNS (jsb jsonb PATH '$', jsbq jsonb PATH '$' OMIT QUOTES, aaa integer PATH '$."aaa"', aaa1 integer PATH '$."aaa"') PLAN (json_table_path_0))
+(3 rows)
+
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view5;
+ QUERY PLAN
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ Table Function Scan on "JSON_TABLE" "json_table"
+ Output: "json_table".exists1, "json_table".exists2, "json_table".exists3
+ Table Function Call: JSON_TABLE('null'::jsonb, '$[*]' AS json_table_path_0 PASSING 3 AS a, '"foo"'::jsonb AS "b c" COLUMNS (exists1 boolean EXISTS PATH '$."aaa"', exists2 integer EXISTS PATH '$."aaa"' TRUE ON ERROR, exists3 text EXISTS PATH 'strict $."aaa"' UNKNOWN ON ERROR) PLAN (json_table_path_0))
+(3 rows)
+
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view6;
+ QUERY PLAN
+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ Table Function Scan on "JSON_TABLE" "json_table"
+ Output: "json_table".js2, "json_table".jsb2w, "json_table".jsb2q, "json_table".ia, "json_table".ta, "json_table".jba
+ Table Function Call: JSON_TABLE('null'::jsonb, '$[*]' AS json_table_path_0 PASSING 3 AS a, '"foo"'::jsonb AS "b c" COLUMNS (js2 json PATH '$', jsb2w jsonb PATH '$' WITH UNCONDITIONAL WRAPPER, jsb2q jsonb PATH '$' OMIT QUOTES, ia integer[] PATH '$', ta text[] PATH '$', jba jsonb[] PATH '$') PLAN (json_table_path_0))
+(3 rows)
+
+-- JSON_TABLE() with alias
+EXPLAIN (COSTS OFF, VERBOSE)
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ id FOR ORDINALITY,
+ "int" int PATH '$',
+ "text" text PATH '$'
+ )) json_table_func;
+ QUERY PLAN
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
+ Table Function Scan on "JSON_TABLE" json_table_func
+ Output: id, "int", text
+ Table Function Call: JSON_TABLE('null'::jsonb, '$[*]' AS json_table_path_0 PASSING 3 AS a, '"foo"'::jsonb AS "b c" COLUMNS (id FOR ORDINALITY, "int" integer PATH '$', text text PATH '$') PLAN (json_table_path_0))
+(3 rows)
+
+DROP VIEW jsonb_table_view1;
+DROP VIEW jsonb_table_view2;
+DROP VIEW jsonb_table_view3;
+DROP VIEW jsonb_table_view4;
+DROP VIEW jsonb_table_view5;
+DROP VIEW jsonb_table_view6;
+DROP DOMAIN jsonb_test_domain;
+-- JSON_TABLE: only one FOR ORDINALITY columns allowed
+SELECT * FROM JSON_TABLE(jsonb '1', '$' COLUMNS (id FOR ORDINALITY, id2 FOR ORDINALITY, a int PATH '$.a' ERROR ON EMPTY)) jt;
+ERROR: cannot use more than one FOR ORDINALITY column
+LINE 1: ..._TABLE(jsonb '1', '$' COLUMNS (id FOR ORDINALITY, id2 FOR OR...
+ ^
+SELECT * FROM JSON_TABLE(jsonb '1', '$' COLUMNS (id FOR ORDINALITY, a int PATH '$' ERROR ON EMPTY)) jt;
+ id | a
+----+---
+ 1 | 1
+(1 row)
+
+-- JSON_TABLE: ON EMPTY/ON ERROR behavior
+SELECT *
+FROM
+ (VALUES ('1'), ('"err"')) vals(js),
+ JSON_TABLE(vals.js::jsonb, '$' COLUMNS (a int PATH '$')) jt;
+ js | a
+-------+---
+ 1 | 1
+ "err" |
+(2 rows)
+
+SELECT *
+FROM
+ (VALUES ('1'), ('"err"')) vals(js)
+ LEFT OUTER JOIN
+ JSON_TABLE(vals.js::jsonb, '$' COLUMNS (a int PATH '$') ERROR ON ERROR) jt
+ ON true;
+ERROR: invalid input syntax for type integer: "err"
+SELECT *
+FROM
+ (VALUES ('1'), ('"err"')) vals(js)
+ LEFT OUTER JOIN
+ JSON_TABLE(vals.js::jsonb, '$' COLUMNS (a int PATH '$' ERROR ON ERROR)) jt
+ ON true;
+ERROR: invalid input syntax for type integer: "err"
+SELECT * FROM JSON_TABLE(jsonb '1', '$' COLUMNS (a int PATH '$.a' ERROR ON EMPTY)) jt;
+ERROR: no SQL/JSON item
+SELECT * FROM JSON_TABLE(jsonb '1', '$' COLUMNS (a int PATH 'strict $.a' ERROR ON EMPTY) ERROR ON ERROR) jt;
+ERROR: jsonpath member accessor can only be applied to an object
+SELECT * FROM JSON_TABLE(jsonb '1', '$' COLUMNS (a int PATH 'lax $.a' ERROR ON EMPTY) ERROR ON ERROR) jt;
+ERROR: no SQL/JSON item
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int PATH '$' DEFAULT 1 ON EMPTY DEFAULT 2 ON ERROR)) jt;
+ a
+---
+ 2
+(1 row)
+
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int PATH 'strict $.a' DEFAULT 1 ON EMPTY DEFAULT 2 ON ERROR)) jt;
+ a
+---
+ 2
+(1 row)
+
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int PATH 'lax $.a' DEFAULT 1 ON EMPTY DEFAULT 2 ON ERROR)) jt;
+ a
+---
+ 1
+(1 row)
+
+-- JSON_TABLE: EXISTS PATH types
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int4 EXISTS PATH '$.a'));
+ a
+---
+ 0
+(1 row)
+
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int2 EXISTS PATH '$.a'));
+ERROR: cannot cast type boolean to smallint
+LINE 1: ...ELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int2 EXI...
+ ^
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int8 EXISTS PATH '$.a'));
+ERROR: cannot cast type boolean to bigint
+LINE 1: ...ELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int8 EXI...
+ ^
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a float4 EXISTS PATH '$.a'));
+ERROR: cannot cast type boolean to real
+LINE 1: ...ELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a float4 E...
+ ^
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a char(3) EXISTS PATH '$.a'));
+ a
+-----
+ fal
+(1 row)
+
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a json EXISTS PATH '$.a'));
+ERROR: cannot cast type boolean to json
+LINE 1: ...ELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a json EXI...
+ ^
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a jsonb EXISTS PATH '$.a'));
+ERROR: cannot cast type boolean to jsonb
+LINE 1: ...ELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a jsonb EX...
+ ^
+-- JSON_TABLE: WRAPPER/QUOTES clauses on scalar columns
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text PATH '$' KEEP QUOTES ON SCALAR STRING));
+ item
+---------
+ "world"
+(1 row)
+
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text PATH '$' OMIT QUOTES ON SCALAR STRING));
+ item
+-------
+ world
+(1 row)
+
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text FORMAT JSON PATH '$' KEEP QUOTES));
+ item
+---------
+ "world"
+(1 row)
+
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text FORMAT JSON PATH '$' OMIT QUOTES));
+ item
+-------
+ world
+(1 row)
+
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text FORMAT JSON PATH '$' WITHOUT WRAPPER KEEP QUOTES));
+ item
+---------
+ "world"
+(1 row)
+
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text PATH '$' WITHOUT WRAPPER OMIT QUOTES));
+ item
+-------
+ world
+(1 row)
+
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text FORMAT JSON PATH '$' WITH WRAPPER));
+ item
+-----------
+ ["world"]
+(1 row)
+
+-- Error: QUOTES clause meaningless when WITH WRAPPER is present
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text FORMAT JSON PATH '$' WITH WRAPPER KEEP QUOTES));
+ERROR: SQL/JSON QUOTES behavior must not be specified when WITH WRAPPER is used
+LINE 1: ...T * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text ...
+ ^
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text PATH '$' WITH WRAPPER OMIT QUOTES));
+ERROR: SQL/JSON QUOTES behavior must not be specified when WITH WRAPPER is used
+LINE 1: ...T * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text ...
+ ^
+-- JSON_TABLE: nested paths and plans
+-- Should fail (JSON_TABLE columns must contain explicit AS path
+-- specifications if explicit PLAN clause is used)
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$' -- AS <path name> required here
+ COLUMNS (
+ foo int PATH '$'
+ )
+ PLAN DEFAULT (UNION)
+) jt;
+ERROR: invalid JSON_TABLE expression
+LINE 2: jsonb '[]', '$' -- AS <path name> required here
+ ^
+DETAIL: JSON_TABLE path must contain explicit AS pathname specification if explicit PLAN clause is used
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$' AS path1
+ COLUMNS (
+ NESTED PATH '$' COLUMNS ( -- AS <path name> required here
+ foo int PATH '$'
+ )
+ )
+ PLAN DEFAULT (UNION)
+) jt;
+ERROR: invalid JSON_TABLE expression
+LINE 4: NESTED PATH '$' COLUMNS ( -- AS <path name> required here
+ ^
+DETAIL: JSON_TABLE path must contain explicit AS pathname specification if explicit PLAN clause is used
+-- Should fail (column names must be distinct)
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$' AS a
+ COLUMNS (
+ a int
+ )
+) jt;
+ERROR: duplicate JSON_TABLE column name: a
+LINE 4: a int
+ ^
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$' AS a
+ COLUMNS (
+ b int,
+ NESTED PATH '$' AS a
+ COLUMNS (
+ c int
+ )
+ )
+) jt;
+ERROR: duplicate JSON_TABLE path name: a
+LINE 5: NESTED PATH '$' AS a
+ ^
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$'
+ COLUMNS (
+ b int,
+ NESTED PATH '$' AS b
+ COLUMNS (
+ c int
+ )
+ )
+) jt;
+ERROR: duplicate JSON_TABLE path name: b
+LINE 5: NESTED PATH '$' AS b
+ ^
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$'
+ COLUMNS (
+ NESTED PATH '$' AS a
+ COLUMNS (
+ b int
+ ),
+ NESTED PATH '$'
+ COLUMNS (
+ NESTED PATH '$' AS a
+ COLUMNS (
+ c int
+ )
+ )
+ )
+) jt;
+ERROR: duplicate JSON_TABLE path name: a
+LINE 10: NESTED PATH '$' AS a
+ ^
+-- JSON_TABLE: plan validation
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p1)
+) jt;
+ERROR: invalid JSON_TABLE plan
+LINE 12: PLAN (p1)
+ ^
+DETAIL: PATH name mismatch: expected p0 but p1 is given.
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0)
+) jt;
+ERROR: invalid JSON_TABLE specification
+LINE 4: NESTED PATH '$' AS p1 COLUMNS (
+ ^
+DETAIL: PLAN clause for nested path p1 was not found.
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER p3)
+) jt;
+ERROR: invalid JSON_TABLE specification
+LINE 4: NESTED PATH '$' AS p1 COLUMNS (
+ ^
+DETAIL: PLAN clause for nested path p1 was not found.
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 UNION p1 UNION p11)
+) jt;
+ERROR: invalid JSON_TABLE plan clause
+LINE 12: PLAN (p0 UNION p1 UNION p11)
+ ^
+DETAIL: Expected INNER or OUTER.
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER (p1 CROSS p13))
+) jt;
+ERROR: invalid JSON_TABLE specification
+LINE 8: NESTED PATH '$' AS p2 COLUMNS (
+ ^
+DETAIL: PLAN clause for nested path p2 was not found.
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER (p1 CROSS p2))
+) jt;
+ERROR: invalid JSON_TABLE specification
+LINE 5: NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ ^
+DETAIL: PLAN clause for nested path p11 was not found.
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER ((p1 UNION p11) CROSS p2))
+) jt;
+ERROR: invalid JSON_TABLE plan clause
+LINE 12: PLAN (p0 OUTER ((p1 UNION p11) CROSS p2))
+ ^
+DETAIL: PLAN clause contains some extra or duplicate sibling nodes.
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER ((p1 INNER p11) CROSS p2))
+) jt;
+ERROR: invalid JSON_TABLE specification
+LINE 6: NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ^
+DETAIL: PLAN clause for nested path p12 was not found.
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER ((p1 INNER (p12 CROSS p11)) CROSS p2))
+) jt;
+ERROR: invalid JSON_TABLE specification
+LINE 9: NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ ^
+DETAIL: PLAN clause for nested path p21 was not found.
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', 'strict $[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER ((p1 INNER (p12 CROSS p11)) CROSS (p2 INNER p21)))
+) jt;
+ bar | foo | baz
+-----+-----+-----
+(0 rows)
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', 'strict $[*]' -- without root path name
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN ((p1 INNER (p12 CROSS p11)) CROSS (p2 INNER p21))
+) jt;
+ERROR: invalid JSON_TABLE expression
+LINE 2: jsonb 'null', 'strict $[*]' -- without root path name
+ ^
+DETAIL: JSON_TABLE path must contain explicit AS pathname specification if explicit PLAN clause is used
+-- JSON_TABLE: plan execution
+CREATE TEMP TABLE jsonb_table_test (js jsonb);
+INSERT INTO jsonb_table_test
+VALUES (
+ '[
+ {"a": 1, "b": [], "c": []},
+ {"a": 2, "b": [1, 2, 3], "c": [10, null, 20]},
+ {"a": 3, "b": [1, 2], "c": []},
+ {"x": "4", "b": [1, 2], "c": 123}
+ ]'
+);
+-- unspecified plan (outer, union)
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ ) jt;
+ n | a | b | c
+---+----+---+----
+ 1 | 1 | |
+ 2 | 2 | 1 |
+ 2 | 2 | 2 |
+ 2 | 2 | 3 |
+ 2 | 2 | | 10
+ 2 | 2 | |
+ 2 | 2 | | 20
+ 3 | 3 | 1 |
+ 3 | 3 | 2 |
+ 4 | -1 | 1 |
+ 4 | -1 | 2 |
+(11 rows)
+
+-- default plan (outer, union)
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan default (outer, union)
+ ) jt;
+ n | a | b | c
+---+----+---+----
+ 1 | 1 | |
+ 2 | 2 | 1 | 10
+ 2 | 2 | 1 |
+ 2 | 2 | 1 | 20
+ 2 | 2 | 2 | 10
+ 2 | 2 | 2 |
+ 2 | 2 | 2 | 20
+ 2 | 2 | 3 | 10
+ 2 | 2 | 3 |
+ 2 | 2 | 3 | 20
+ 3 | 3 | |
+ 4 | -1 | |
+(12 rows)
+
+-- specific plan (p outer (pb union pc))
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan (p outer (pb union pc))
+ ) jt;
+ n | a | b | c
+---+----+---+----
+ 1 | 1 | |
+ 2 | 2 | 1 |
+ 2 | 2 | 2 |
+ 2 | 2 | 3 |
+ 2 | 2 | | 10
+ 2 | 2 | |
+ 2 | 2 | | 20
+ 3 | 3 | 1 |
+ 3 | 3 | 2 |
+ 4 | -1 | 1 |
+ 4 | -1 | 2 |
+(11 rows)
+
+-- specific plan (p outer (pc union pb))
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan (p outer (pc union pb))
+ ) jt;
+ n | a | c | b
+---+----+----+---
+ 1 | 1 | |
+ 2 | 2 | 10 |
+ 2 | 2 | |
+ 2 | 2 | 20 |
+ 2 | 2 | | 1
+ 2 | 2 | | 2
+ 2 | 2 | | 3
+ 3 | 3 | | 1
+ 3 | 3 | | 2
+ 4 | -1 | | 1
+ 4 | -1 | | 2
+(11 rows)
+
+-- default plan (inner, union)
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan default (inner)
+ ) jt;
+ n | a | b | c
+---+----+---+----
+ 1 | 1 | |
+ 2 | 2 | 1 | 10
+ 2 | 2 | 1 |
+ 2 | 2 | 1 | 20
+ 2 | 2 | 2 | 10
+ 2 | 2 | 2 |
+ 2 | 2 | 2 | 20
+ 2 | 2 | 3 | 10
+ 2 | 2 | 3 |
+ 2 | 2 | 3 | 20
+ 3 | 3 | |
+ 4 | -1 | |
+(12 rows)
+
+-- specific plan (p inner (pb union pc))
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan (p inner (pb union pc))
+ ) jt;
+ n | a | b | c
+---+----+---+----
+ 2 | 2 | 1 |
+ 2 | 2 | 2 |
+ 2 | 2 | 3 |
+ 2 | 2 | | 10
+ 2 | 2 | |
+ 2 | 2 | | 20
+ 3 | 3 | 1 |
+ 3 | 3 | 2 |
+ 4 | -1 | 1 |
+ 4 | -1 | 2 |
+(10 rows)
+
+-- default plan (inner, cross)
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan default (cross, inner)
+ ) jt;
+ n | a | b | c
+---+---+---+----
+ 2 | 2 | 1 | 10
+ 2 | 2 | 1 |
+ 2 | 2 | 1 | 20
+ 2 | 2 | 2 | 10
+ 2 | 2 | 2 |
+ 2 | 2 | 2 | 20
+ 2 | 2 | 3 | 10
+ 2 | 2 | 3 |
+ 2 | 2 | 3 | 20
+(9 rows)
+
+-- specific plan (p inner (pb cross pc))
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan (p inner (pb cross pc))
+ ) jt;
+ n | a | b | c
+---+---+---+----
+ 2 | 2 | 1 | 10
+ 2 | 2 | 1 |
+ 2 | 2 | 1 | 20
+ 2 | 2 | 2 | 10
+ 2 | 2 | 2 |
+ 2 | 2 | 2 | 20
+ 2 | 2 | 3 | 10
+ 2 | 2 | 3 |
+ 2 | 2 | 3 | 20
+(9 rows)
+
+-- default plan (outer, cross)
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan default (outer, cross)
+ ) jt;
+ n | a | b | c
+---+----+---+----
+ 1 | 1 | |
+ 2 | 2 | 1 | 10
+ 2 | 2 | 1 |
+ 2 | 2 | 1 | 20
+ 2 | 2 | 2 | 10
+ 2 | 2 | 2 |
+ 2 | 2 | 2 | 20
+ 2 | 2 | 3 | 10
+ 2 | 2 | 3 |
+ 2 | 2 | 3 | 20
+ 3 | 3 | |
+ 4 | -1 | |
+(12 rows)
+
+-- specific plan (p outer (pb cross pc))
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan (p outer (pb cross pc))
+ ) jt;
+ n | a | b | c
+---+----+---+----
+ 1 | 1 | |
+ 2 | 2 | 1 | 10
+ 2 | 2 | 1 |
+ 2 | 2 | 1 | 20
+ 2 | 2 | 2 | 10
+ 2 | 2 | 2 |
+ 2 | 2 | 2 | 20
+ 2 | 2 | 3 | 10
+ 2 | 2 | 3 |
+ 2 | 2 | 3 | 20
+ 3 | 3 | |
+ 4 | -1 | |
+(12 rows)
+
+select
+ jt.*, b1 + 100 as b
+from
+ json_table (jsonb
+ '[
+ {"a": 1, "b": [[1, 10], [2], [3, 30, 300]], "c": [1, null, 2]},
+ {"a": 2, "b": [10, 20], "c": [1, null, 2]},
+ {"x": "3", "b": [11, 22, 33, 44]}
+ ]',
+ '$[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on error,
+ nested path 'strict $.b[*]' as pb columns (
+ b text format json path '$',
+ nested path 'strict $[*]' as pb1 columns (
+ b1 int path '$'
+ )
+ ),
+ nested path 'strict $.c[*]' as pc columns (
+ c text format json path '$',
+ nested path 'strict $[*]' as pc1 columns (
+ c1 int path '$'
+ )
+ )
+ )
+ --plan default(outer, cross)
+ plan(p outer ((pb inner pb1) cross (pc outer pc1)))
+ ) jt;
+ n | a | b | b1 | c | c1 | b
+---+----+--------------+-----+------+----+-----
+ 1 | 1 | [1, 10] | 1 | 1 | | 101
+ 1 | 1 | [1, 10] | 1 | null | | 101
+ 1 | 1 | [1, 10] | 1 | 2 | | 101
+ 1 | 1 | [1, 10] | 10 | 1 | | 110
+ 1 | 1 | [1, 10] | 10 | null | | 110
+ 1 | 1 | [1, 10] | 10 | 2 | | 110
+ 1 | 1 | [2] | 2 | 1 | | 102
+ 1 | 1 | [2] | 2 | null | | 102
+ 1 | 1 | [2] | 2 | 2 | | 102
+ 1 | 1 | [3, 30, 300] | 3 | 1 | | 103
+ 1 | 1 | [3, 30, 300] | 3 | null | | 103
+ 1 | 1 | [3, 30, 300] | 3 | 2 | | 103
+ 1 | 1 | [3, 30, 300] | 30 | 1 | | 130
+ 1 | 1 | [3, 30, 300] | 30 | null | | 130
+ 1 | 1 | [3, 30, 300] | 30 | 2 | | 130
+ 1 | 1 | [3, 30, 300] | 300 | 1 | | 400
+ 1 | 1 | [3, 30, 300] | 300 | null | | 400
+ 1 | 1 | [3, 30, 300] | 300 | 2 | | 400
+ 2 | 2 | | | | |
+ 3 | -1 | | | | |
+(20 rows)
+
+-- Should succeed (JSON arguments are passed to root and nested paths)
+SELECT *
+FROM
+ generate_series(1, 4) x,
+ generate_series(1, 3) y,
+ JSON_TABLE(jsonb
+ '[[1,2,3],[2,3,4,5],[3,4,5,6]]',
+ 'strict $[*] ? (@[*] < $x)'
+ PASSING x AS x, y AS y
+ COLUMNS (
+ y text FORMAT JSON PATH '$',
+ NESTED PATH 'strict $[*] ? (@ >= $y)'
+ COLUMNS (
+ z int PATH '$'
+ )
+ )
+ ) jt;
+ x | y | y | z
+---+---+--------------+---
+ 2 | 1 | [1, 2, 3] | 1
+ 2 | 1 | [1, 2, 3] | 2
+ 2 | 1 | [1, 2, 3] | 3
+ 3 | 1 | [1, 2, 3] | 1
+ 3 | 1 | [1, 2, 3] | 2
+ 3 | 1 | [1, 2, 3] | 3
+ 3 | 1 | [2, 3, 4, 5] | 2
+ 3 | 1 | [2, 3, 4, 5] | 3
+ 3 | 1 | [2, 3, 4, 5] | 4
+ 3 | 1 | [2, 3, 4, 5] | 5
+ 4 | 1 | [1, 2, 3] | 1
+ 4 | 1 | [1, 2, 3] | 2
+ 4 | 1 | [1, 2, 3] | 3
+ 4 | 1 | [2, 3, 4, 5] | 2
+ 4 | 1 | [2, 3, 4, 5] | 3
+ 4 | 1 | [2, 3, 4, 5] | 4
+ 4 | 1 | [2, 3, 4, 5] | 5
+ 4 | 1 | [3, 4, 5, 6] | 3
+ 4 | 1 | [3, 4, 5, 6] | 4
+ 4 | 1 | [3, 4, 5, 6] | 5
+ 4 | 1 | [3, 4, 5, 6] | 6
+ 2 | 2 | [1, 2, 3] | 2
+ 2 | 2 | [1, 2, 3] | 3
+ 3 | 2 | [1, 2, 3] | 2
+ 3 | 2 | [1, 2, 3] | 3
+ 3 | 2 | [2, 3, 4, 5] | 2
+ 3 | 2 | [2, 3, 4, 5] | 3
+ 3 | 2 | [2, 3, 4, 5] | 4
+ 3 | 2 | [2, 3, 4, 5] | 5
+ 4 | 2 | [1, 2, 3] | 2
+ 4 | 2 | [1, 2, 3] | 3
+ 4 | 2 | [2, 3, 4, 5] | 2
+ 4 | 2 | [2, 3, 4, 5] | 3
+ 4 | 2 | [2, 3, 4, 5] | 4
+ 4 | 2 | [2, 3, 4, 5] | 5
+ 4 | 2 | [3, 4, 5, 6] | 3
+ 4 | 2 | [3, 4, 5, 6] | 4
+ 4 | 2 | [3, 4, 5, 6] | 5
+ 4 | 2 | [3, 4, 5, 6] | 6
+ 2 | 3 | [1, 2, 3] | 3
+ 3 | 3 | [1, 2, 3] | 3
+ 3 | 3 | [2, 3, 4, 5] | 3
+ 3 | 3 | [2, 3, 4, 5] | 4
+ 3 | 3 | [2, 3, 4, 5] | 5
+ 4 | 3 | [1, 2, 3] | 3
+ 4 | 3 | [2, 3, 4, 5] | 3
+ 4 | 3 | [2, 3, 4, 5] | 4
+ 4 | 3 | [2, 3, 4, 5] | 5
+ 4 | 3 | [3, 4, 5, 6] | 3
+ 4 | 3 | [3, 4, 5, 6] | 4
+ 4 | 3 | [3, 4, 5, 6] | 5
+ 4 | 3 | [3, 4, 5, 6] | 6
+(52 rows)
+
+-- Should fail (JSON arguments are not passed to column paths)
+SELECT *
+FROM JSON_TABLE(
+ jsonb '[1,2,3]',
+ '$[*] ? (@ < $x)'
+ PASSING 10 AS x
+ COLUMNS (y text FORMAT JSON PATH '$ ? (@ < $x)')
+ ) jt;
+ERROR: could not find jsonpath variable "x"
+-- Should fail (not supported)
+SELECT * FROM JSON_TABLE(jsonb '{"a": 123}', '$' || '.' || 'a' COLUMNS (foo int));
+ERROR: only string constants are supported in JSON_TABLE path specification
+LINE 1: SELECT * FROM JSON_TABLE(jsonb '{"a": 123}', '$' || '.' || '...
+ ^
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 910f6fe3c9..d8e25bbd2e 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -103,7 +103,7 @@ test: select_views portals_p2 foreign_key cluster dependency guc bitmapops combo
# ----------
# Another group of parallel tests (JSON related)
# ----------
-test: json jsonb json_encoding jsonpath jsonpath_encoding jsonb_jsonpath sqljson sqljson_queryfuncs
+test: json jsonb json_encoding jsonpath jsonpath_encoding jsonb_jsonpath sqljson sqljson_queryfuncs sqljson_jsontable
# ----------
# Another group of parallel tests
diff --git a/src/test/regress/sql/sqljson_jsontable.sql b/src/test/regress/sql/sqljson_jsontable.sql
new file mode 100644
index 0000000000..677a14fdbc
--- /dev/null
+++ b/src/test/regress/sql/sqljson_jsontable.sql
@@ -0,0 +1,729 @@
+-- JSON_TABLE
+
+-- Should fail (JSON_TABLE can be used only in FROM clause)
+SELECT JSON_TABLE('[]', '$');
+
+-- Should fail (json argument not supported)
+SELECT * FROM JSON_TABLE(NULL FORMAT JSON, '$' COLUMNS (foo text));
+
+-- Should fail (no columns)
+SELECT * FROM JSON_TABLE(NULL, '$' COLUMNS ());
+
+SELECT * FROM JSON_TABLE (NULL::jsonb, '$' COLUMNS (v1 timestamp)) AS f (v1, v2);
+
+-- NULL => empty table
+SELECT * FROM JSON_TABLE(NULL::jsonb, '$' COLUMNS (foo int)) bar;
+
+--
+SELECT * FROM JSON_TABLE(jsonb '123', '$'
+ COLUMNS (item int PATH '$', foo int)) bar;
+
+-- JSON_TABLE: basic functionality
+CREATE DOMAIN jsonb_test_domain AS text CHECK (value <> 'foo');
+CREATE TEMP TABLE json_table_test (js) AS
+ (VALUES
+ ('1'),
+ ('[]'),
+ ('{}'),
+ ('[1, 1.23, "2", "aaaaaaa", "foo", null, false, true, {"aaa": 123}, "[1,2]", "\"str\""]')
+ );
+
+-- Regular "unformatted" columns
+SELECT *
+FROM json_table_test vals
+ LEFT OUTER JOIN
+ JSON_TABLE(
+ vals.js::jsonb, 'lax $[*]'
+ COLUMNS (
+ id FOR ORDINALITY,
+ "int" int PATH '$',
+ "text" text PATH '$',
+ "char(4)" char(4) PATH '$',
+ "bool" bool PATH '$',
+ "numeric" numeric PATH '$',
+ "domain" jsonb_test_domain PATH '$',
+ js json PATH '$',
+ jb jsonb PATH '$'
+ )
+ ) jt
+ ON true;
+
+-- "formatted" columns
+SELECT *
+FROM json_table_test vals
+ LEFT OUTER JOIN
+ JSON_TABLE(
+ vals.js::jsonb, 'lax $[*]'
+ COLUMNS (
+ id FOR ORDINALITY,
+ jst text FORMAT JSON PATH '$',
+ jsc char(4) FORMAT JSON PATH '$',
+ jsv varchar(4) FORMAT JSON PATH '$',
+ jsb jsonb FORMAT JSON PATH '$',
+ jsbq jsonb FORMAT JSON PATH '$' OMIT QUOTES
+ )
+ ) jt
+ ON true;
+
+-- EXISTS columns
+SELECT *
+FROM json_table_test vals
+ LEFT OUTER JOIN
+ JSON_TABLE(
+ vals.js::jsonb, 'lax $[*]'
+ COLUMNS (
+ id FOR ORDINALITY,
+ exists1 bool EXISTS PATH '$.aaa',
+ exists2 int EXISTS PATH '$.aaa',
+ exists3 int EXISTS PATH 'strict $.aaa' UNKNOWN ON ERROR,
+ exists4 text EXISTS PATH 'strict $.aaa' FALSE ON ERROR
+ )
+ ) jt
+ ON true;
+
+-- Other miscellanous checks
+SELECT *
+FROM json_table_test vals
+ LEFT OUTER JOIN
+ JSON_TABLE(
+ vals.js::jsonb, 'lax $[*]'
+ COLUMNS (
+ id FOR ORDINALITY,
+ aaa int, -- "aaa" has implicit path '$."aaa"'
+ aaa1 int PATH '$.aaa',
+ js2 json PATH '$',
+ jsb2w jsonb PATH '$' WITH WRAPPER,
+ jsb2q jsonb PATH '$' OMIT QUOTES,
+ ia int[] PATH '$',
+ ta text[] PATH '$',
+ jba jsonb[] PATH '$'
+ )
+ ) jt
+ ON true;
+
+-- JSON_TABLE: Test backward parsing
+
+CREATE VIEW jsonb_table_view1 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ id FOR ORDINALITY,
+ NESTED PATH '$[1]' AS p1 COLUMNS (
+ a1 int,
+ NESTED PATH '$[*]' AS "p1 1" COLUMNS (
+ a11 text
+ ),
+ b1 text
+ ),
+ NESTED PATH '$[2]' AS p2 COLUMNS (
+ NESTED PATH '$[*]' AS "p2:1" COLUMNS (
+ a21 text
+ ),
+ NESTED PATH '$[*]' AS p22 COLUMNS (
+ a22 text
+ )
+ )
+ )
+ );
+
+CREATE VIEW jsonb_table_view2 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ "int" int PATH '$',
+ "text" text PATH '$',
+ "char(4)" char(4) PATH '$',
+ "bool" bool PATH '$',
+ "numeric" numeric PATH '$',
+ "domain" jsonb_test_domain PATH '$'));
+
+CREATE VIEW jsonb_table_view3 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ js json PATH '$',
+ jb jsonb PATH '$',
+ jst text FORMAT JSON PATH '$',
+ jsc char(4) FORMAT JSON PATH '$',
+ jsv varchar(4) FORMAT JSON PATH '$'));
+
+CREATE VIEW jsonb_table_view4 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ jsb jsonb FORMAT JSON PATH '$',
+ jsbq jsonb FORMAT JSON PATH '$' OMIT QUOTES,
+ aaa int, -- implicit path '$."aaa"',
+ aaa1 int PATH '$.aaa'));
+
+CREATE VIEW jsonb_table_view5 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ exists1 bool EXISTS PATH '$.aaa',
+ exists2 int EXISTS PATH '$.aaa' TRUE ON ERROR,
+ exists3 text EXISTS PATH 'strict $.aaa' UNKNOWN ON ERROR));
+
+CREATE VIEW jsonb_table_view6 AS
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ js2 json PATH '$',
+ jsb2w jsonb PATH '$' WITH WRAPPER,
+ jsb2q jsonb PATH '$' OMIT QUOTES,
+ ia int[] PATH '$',
+ ta text[] PATH '$',
+ jba jsonb[] PATH '$'));
+
+\sv jsonb_table_view1
+\sv jsonb_table_view2
+\sv jsonb_table_view3
+\sv jsonb_table_view4
+\sv jsonb_table_view5
+\sv jsonb_table_view6
+
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view1;
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view2;
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view3;
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view4;
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view5;
+EXPLAIN (COSTS OFF, VERBOSE) SELECT * FROM jsonb_table_view6;
+
+-- JSON_TABLE() with alias
+EXPLAIN (COSTS OFF, VERBOSE)
+SELECT * FROM
+ JSON_TABLE(
+ jsonb 'null', 'lax $[*]' PASSING 1 + 2 AS a, json '"foo"' AS "b c"
+ COLUMNS (
+ id FOR ORDINALITY,
+ "int" int PATH '$',
+ "text" text PATH '$'
+ )) json_table_func;
+
+DROP VIEW jsonb_table_view1;
+DROP VIEW jsonb_table_view2;
+DROP VIEW jsonb_table_view3;
+DROP VIEW jsonb_table_view4;
+DROP VIEW jsonb_table_view5;
+DROP VIEW jsonb_table_view6;
+DROP DOMAIN jsonb_test_domain;
+
+-- JSON_TABLE: only one FOR ORDINALITY columns allowed
+SELECT * FROM JSON_TABLE(jsonb '1', '$' COLUMNS (id FOR ORDINALITY, id2 FOR ORDINALITY, a int PATH '$.a' ERROR ON EMPTY)) jt;
+SELECT * FROM JSON_TABLE(jsonb '1', '$' COLUMNS (id FOR ORDINALITY, a int PATH '$' ERROR ON EMPTY)) jt;
+
+-- JSON_TABLE: ON EMPTY/ON ERROR behavior
+SELECT *
+FROM
+ (VALUES ('1'), ('"err"')) vals(js),
+ JSON_TABLE(vals.js::jsonb, '$' COLUMNS (a int PATH '$')) jt;
+
+SELECT *
+FROM
+ (VALUES ('1'), ('"err"')) vals(js)
+ LEFT OUTER JOIN
+ JSON_TABLE(vals.js::jsonb, '$' COLUMNS (a int PATH '$') ERROR ON ERROR) jt
+ ON true;
+
+SELECT *
+FROM
+ (VALUES ('1'), ('"err"')) vals(js)
+ LEFT OUTER JOIN
+ JSON_TABLE(vals.js::jsonb, '$' COLUMNS (a int PATH '$' ERROR ON ERROR)) jt
+ ON true;
+
+SELECT * FROM JSON_TABLE(jsonb '1', '$' COLUMNS (a int PATH '$.a' ERROR ON EMPTY)) jt;
+SELECT * FROM JSON_TABLE(jsonb '1', '$' COLUMNS (a int PATH 'strict $.a' ERROR ON EMPTY) ERROR ON ERROR) jt;
+SELECT * FROM JSON_TABLE(jsonb '1', '$' COLUMNS (a int PATH 'lax $.a' ERROR ON EMPTY) ERROR ON ERROR) jt;
+
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int PATH '$' DEFAULT 1 ON EMPTY DEFAULT 2 ON ERROR)) jt;
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int PATH 'strict $.a' DEFAULT 1 ON EMPTY DEFAULT 2 ON ERROR)) jt;
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int PATH 'lax $.a' DEFAULT 1 ON EMPTY DEFAULT 2 ON ERROR)) jt;
+
+-- JSON_TABLE: EXISTS PATH types
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int4 EXISTS PATH '$.a'));
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int2 EXISTS PATH '$.a'));
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a int8 EXISTS PATH '$.a'));
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a float4 EXISTS PATH '$.a'));
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a char(3) EXISTS PATH '$.a'));
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a json EXISTS PATH '$.a'));
+SELECT * FROM JSON_TABLE(jsonb '"a"', '$' COLUMNS (a jsonb EXISTS PATH '$.a'));
+
+-- JSON_TABLE: WRAPPER/QUOTES clauses on scalar columns
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text PATH '$' KEEP QUOTES ON SCALAR STRING));
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text PATH '$' OMIT QUOTES ON SCALAR STRING));
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text FORMAT JSON PATH '$' KEEP QUOTES));
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text FORMAT JSON PATH '$' OMIT QUOTES));
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text FORMAT JSON PATH '$' WITHOUT WRAPPER KEEP QUOTES));
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text PATH '$' WITHOUT WRAPPER OMIT QUOTES));
+
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text FORMAT JSON PATH '$' WITH WRAPPER));
+
+-- Error: QUOTES clause meaningless when WITH WRAPPER is present
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text FORMAT JSON PATH '$' WITH WRAPPER KEEP QUOTES));
+SELECT * FROM JSON_TABLE(jsonb '"world"', '$' COLUMNS (item text PATH '$' WITH WRAPPER OMIT QUOTES));
+
+-- JSON_TABLE: nested paths and plans
+
+-- Should fail (JSON_TABLE columns must contain explicit AS path
+-- specifications if explicit PLAN clause is used)
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$' -- AS <path name> required here
+ COLUMNS (
+ foo int PATH '$'
+ )
+ PLAN DEFAULT (UNION)
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$' AS path1
+ COLUMNS (
+ NESTED PATH '$' COLUMNS ( -- AS <path name> required here
+ foo int PATH '$'
+ )
+ )
+ PLAN DEFAULT (UNION)
+) jt;
+
+-- Should fail (column names must be distinct)
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$' AS a
+ COLUMNS (
+ a int
+ )
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$' AS a
+ COLUMNS (
+ b int,
+ NESTED PATH '$' AS a
+ COLUMNS (
+ c int
+ )
+ )
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$'
+ COLUMNS (
+ b int,
+ NESTED PATH '$' AS b
+ COLUMNS (
+ c int
+ )
+ )
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb '[]', '$'
+ COLUMNS (
+ NESTED PATH '$' AS a
+ COLUMNS (
+ b int
+ ),
+ NESTED PATH '$'
+ COLUMNS (
+ NESTED PATH '$' AS a
+ COLUMNS (
+ c int
+ )
+ )
+ )
+) jt;
+
+-- JSON_TABLE: plan validation
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p1)
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0)
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER p3)
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 UNION p1 UNION p11)
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER (p1 CROSS p13))
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER (p1 CROSS p2))
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER ((p1 UNION p11) CROSS p2))
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER ((p1 INNER p11) CROSS p2))
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', '$[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER ((p1 INNER (p12 CROSS p11)) CROSS p2))
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', 'strict $[*]' AS p0
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN (p0 OUTER ((p1 INNER (p12 CROSS p11)) CROSS (p2 INNER p21)))
+) jt;
+
+SELECT * FROM JSON_TABLE(
+ jsonb 'null', 'strict $[*]' -- without root path name
+ COLUMNS (
+ NESTED PATH '$' AS p1 COLUMNS (
+ NESTED PATH '$' AS p11 COLUMNS ( foo int ),
+ NESTED PATH '$' AS p12 COLUMNS ( bar int )
+ ),
+ NESTED PATH '$' AS p2 COLUMNS (
+ NESTED PATH '$' AS p21 COLUMNS ( baz int )
+ )
+ )
+ PLAN ((p1 INNER (p12 CROSS p11)) CROSS (p2 INNER p21))
+) jt;
+
+-- JSON_TABLE: plan execution
+
+CREATE TEMP TABLE jsonb_table_test (js jsonb);
+
+INSERT INTO jsonb_table_test
+VALUES (
+ '[
+ {"a": 1, "b": [], "c": []},
+ {"a": 2, "b": [1, 2, 3], "c": [10, null, 20]},
+ {"a": 3, "b": [1, 2], "c": []},
+ {"x": "4", "b": [1, 2], "c": 123}
+ ]'
+);
+
+-- unspecified plan (outer, union)
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ ) jt;
+
+-- default plan (outer, union)
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan default (outer, union)
+ ) jt;
+
+-- specific plan (p outer (pb union pc))
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan (p outer (pb union pc))
+ ) jt;
+
+-- specific plan (p outer (pc union pb))
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan (p outer (pc union pb))
+ ) jt;
+
+-- default plan (inner, union)
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan default (inner)
+ ) jt;
+
+-- specific plan (p inner (pb union pc))
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan (p inner (pb union pc))
+ ) jt;
+
+-- default plan (inner, cross)
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan default (cross, inner)
+ ) jt;
+
+-- specific plan (p inner (pb cross pc))
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan (p inner (pb cross pc))
+ ) jt;
+
+-- default plan (outer, cross)
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan default (outer, cross)
+ ) jt;
+
+-- specific plan (p outer (pb cross pc))
+select
+ jt.*
+from
+ jsonb_table_test jtt,
+ json_table (
+ jtt.js,'strict $[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on empty,
+ nested path 'strict $.b[*]' as pb columns ( b int path '$' ),
+ nested path 'strict $.c[*]' as pc columns ( c int path '$' )
+ )
+ plan (p outer (pb cross pc))
+ ) jt;
+
+
+select
+ jt.*, b1 + 100 as b
+from
+ json_table (jsonb
+ '[
+ {"a": 1, "b": [[1, 10], [2], [3, 30, 300]], "c": [1, null, 2]},
+ {"a": 2, "b": [10, 20], "c": [1, null, 2]},
+ {"x": "3", "b": [11, 22, 33, 44]}
+ ]',
+ '$[*]' as p
+ columns (
+ n for ordinality,
+ a int path 'lax $.a' default -1 on error,
+ nested path 'strict $.b[*]' as pb columns (
+ b text format json path '$',
+ nested path 'strict $[*]' as pb1 columns (
+ b1 int path '$'
+ )
+ ),
+ nested path 'strict $.c[*]' as pc columns (
+ c text format json path '$',
+ nested path 'strict $[*]' as pc1 columns (
+ c1 int path '$'
+ )
+ )
+ )
+ --plan default(outer, cross)
+ plan(p outer ((pb inner pb1) cross (pc outer pc1)))
+ ) jt;
+
+-- Should succeed (JSON arguments are passed to root and nested paths)
+SELECT *
+FROM
+ generate_series(1, 4) x,
+ generate_series(1, 3) y,
+ JSON_TABLE(jsonb
+ '[[1,2,3],[2,3,4,5],[3,4,5,6]]',
+ 'strict $[*] ? (@[*] < $x)'
+ PASSING x AS x, y AS y
+ COLUMNS (
+ y text FORMAT JSON PATH '$',
+ NESTED PATH 'strict $[*] ? (@ >= $y)'
+ COLUMNS (
+ z int PATH '$'
+ )
+ )
+ ) jt;
+
+-- Should fail (JSON arguments are not passed to column paths)
+SELECT *
+FROM JSON_TABLE(
+ jsonb '[1,2,3]',
+ '$[*] ? (@ < $x)'
+ PASSING 10 AS x
+ COLUMNS (y text FORMAT JSON PATH '$ ? (@ < $x)')
+ ) jt;
+
+-- Should fail (not supported)
+SELECT * FROM JSON_TABLE(jsonb '{"a": 123}', '$' || '.' || 'a' COLUMNS (foo int));
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index 355c8144a2..05bdfb92bb 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -1326,6 +1326,7 @@ JsonPathMutableContext
JsonPathParseItem
JsonPathParseResult
JsonPathPredicateCallback
+JsonPathSpec
JsonPathString
JsonPathVariable
JsonPathVariableEvalContext
@@ -1335,6 +1336,20 @@ JsonReturning
JsonScalarExpr
JsonSemAction
JsonSerializeExpr
+JsonTable
+JsonTableColumn
+JsonTableColumnType
+JsonTableContext
+JsonTableParseContext
+JsonTableJoinState
+JsonTablePlan
+JsonTablePlanSpec
+JsonTablePlanState
+JsonTablePlanStateType
+JsonTablePlanJoinType
+JsonTablePlanType
+JsonTableScanState
+JsonTableSibling
JsonTokenType
JsonTransformStringValuesAction
JsonTypeCategory
@@ -2803,6 +2818,7 @@ TableFunc
TableFuncRoutine
TableFuncScan
TableFuncScanState
+TableFuncType
TableInfo
TableLikeClause
TableSampleClause
--
2.43.0
[application/octet-stream] v40-0001-Add-SQL-JSON-query-functions.patch (207.8K, ../CA+HiwqEe+NDiuiqaazHwygnd5xcd3CCZnxEK6rLJNcNzcYS9mw@mail.gmail.com/4-v40-0001-Add-SQL-JSON-query-functions.patch)
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From 7d9dcd2018b133fdfbcbeb5463ea94182281d733 Mon Sep 17 00:00:00 2001
From: Amit Langote <[email protected]>
Date: Mon, 4 Mar 2024 18:04:50 +0900
Subject: [PATCH v40 1/3] Add SQL/JSON query functions
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This introduces the following SQL/JSON functions for querying JSON
data using jsonpath expressions:
JSON_EXISTS()
JSON_QUERY()
JSON_VALUE()
JSON_EXISTS() tests if the jsonpath expression applied to a jsonb
value yields any values.
JSON_VALUE() applies a jsonpath expression to a jsonb value to return
a single scalar value, producing an error if it multiple values are
matched.
JSON_QUERY() applies a jsonpath expression to a jsonb value to
return a json object or array. There are various options to control
whether multi-value result uses array wrappers and whether the
singleton scalar strings are quoted or not.
Both JSON_VALUE() and JSON_QUERY() functions have options for
handling EMPTY and ERROR conditions, which can be used to specify
the behavior when no values are matched and when an error occurs
during evaluation, respectively.
All of these functions only operate on jsonb values. The workaround
for now is to cast the argument to jsonb.
Author: Nikita Glukhov <[email protected]>
Author: Teodor Sigaev <[email protected]>
Author: Oleg Bartunov <[email protected]>
Author: Alexander Korotkov <[email protected]>
Author: Andrew Dunstan <[email protected]>
Author: Amit Langote <[email protected]>
Author: Peter Eisentraut <[email protected]>
Author: Jian He <[email protected]>
Reviewers have included (in no particular order) Andres Freund, Alexander
Korotkov, Pavel Stehule, Andrew Alsup, Erik Rijkers, Zihong Yu,
Himanshu Upadhyaya, Daniel Gustafsson, Justin Pryzby, Álvaro Herrera,
Jian He, Anton A. Melnikov, Nikita Malakhov, Peter Eisentraut
Discussion: https://postgr.es/m/[email protected]
Discussion: https://postgr.es/m/[email protected]
Discussion: https://postgr.es/m/abd9b83b-aa66-f230-3d6d-734817f0995d%40postgresql.org
Discussion: https://postgr.es/m/CA+HiwqHROpf9e644D8BRqYvaAPmgBZVup-xKMDPk-nd4EpgzHw@mail.gmail.com
Discussion: https://postgr.es/m/CA+HiwqE4XTdfb1nW=Ojoy_tQSRhYt-q_kb6i5d4xcKyrLC1Nbg@mail.gmail.com
---
doc/src/sgml/func.sgml | 219 +++
src/backend/catalog/sql_features.txt | 12 +-
src/backend/executor/execExpr.c | 349 +++++
src/backend/executor/execExprInterp.c | 383 ++++-
src/backend/jit/llvm/llvmjit_expr.c | 144 ++
src/backend/jit/llvm/llvmjit_types.c | 3 +
src/backend/nodes/makefuncs.c | 18 +
src/backend/nodes/nodeFuncs.c | 248 +++-
src/backend/optimizer/path/costsize.c | 3 +-
src/backend/optimizer/util/clauses.c | 20 +
src/backend/parser/gram.y | 188 ++-
src/backend/parser/parse_expr.c | 669 ++++++++-
src/backend/parser/parse_target.c | 15 +
src/backend/utils/adt/formatting.c | 44 +
src/backend/utils/adt/jsonb.c | 31 +
src/backend/utils/adt/jsonfuncs.c | 62 +-
src/backend/utils/adt/jsonpath.c | 280 ++++
src/backend/utils/adt/jsonpath_exec.c | 322 +++++
src/backend/utils/adt/ruleutils.c | 136 ++
src/include/executor/execExpr.h | 24 +-
src/include/nodes/execnodes.h | 87 ++
src/include/nodes/makefuncs.h | 2 +
src/include/nodes/parsenodes.h | 47 +
src/include/nodes/primnodes.h | 180 +++
src/include/parser/kwlist.h | 11 +
src/include/utils/formatting.h | 1 +
src/include/utils/jsonb.h | 1 +
src/include/utils/jsonfuncs.h | 7 +
src/include/utils/jsonpath.h | 24 +
src/interfaces/ecpg/preproc/ecpg.trailer | 28 +
.../regress/expected/sqljson_queryfuncs.out | 1261 +++++++++++++++++
src/test/regress/parallel_schedule | 2 +-
src/test/regress/sql/sqljson_queryfuncs.sql | 427 ++++++
src/tools/pgindent/typedefs.list | 18 +
34 files changed, 5227 insertions(+), 39 deletions(-)
create mode 100644 src/test/regress/expected/sqljson_queryfuncs.out
create mode 100644 src/test/regress/sql/sqljson_queryfuncs.sql
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index e5fa82c161..1447135410 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -15458,6 +15458,11 @@ table2-mapping
the SQL/JSON path language
</para>
</listitem>
+ <listitem>
+ <para>
+ the SQL/JSON query functions
+ </para>
+ </listitem>
</itemizedlist>
</para>
@@ -18586,6 +18591,220 @@ $.* ? (@ like_regex "^\\d+$")
</para>
</sect3>
</sect2>
+
+ <sect2 id="sqljson-query-functions">
+ <title>SQL/JSON Query Functions</title>
+ <para>
+ SQL/JSON functions <literal>JSON_EXISTS()</literal>,
+ <literal>JSON_QUERY()</literal>, and <literal>JSON_VALUE()</literal>
+ described in <xref linkend="functions-sqljson-querying"/> can be used
+ to query JSON document. Each of these functions apply a
+ <replaceable>path_expression</replaceable> (the query) to a
+ <replaceable>context_item</replaceable> (the document); seen
+ <xref linkend="functions-sqljson-path"/> for more details on what
+ <replaceable>path_expression</replaceable> can contain.
+ </para>
+
+ <note>
+ <para>
+ SQL/JSON query functions currently only accept values of the
+ <type>jsonb</type> type, because the SQL/JSON path language only
+ supports those, so it might be necessary to cast the
+ <replaceable>context_item</replaceable> argument of these functions to
+ <type>jsonb</type>.
+ </para>
+ </note>
+
+ <table id="functions-sqljson-querying">
+ <title>SQL/JSON Query Functions</title>
+ <tgroup cols="1">
+ <thead>
+ <row>
+ <entry role="func_table_entry"><para role="func_signature">
+ Function signature
+ </para>
+ <para>
+ Description
+ </para>
+ <para>
+ Example(s)
+ </para></entry>
+ </row>
+ </thead>
+ <tbody>
+ <row>
+ <entry role="func_table_entry"><para role="func_signature">
+ <indexterm><primary>json_exists</primary></indexterm>
+ <function>json_exists</function> (
+ <replaceable>context_item</replaceable>, <replaceable>path_expression</replaceable> <optional> <literal>PASSING</literal> { <replaceable>value</replaceable> <literal>AS</literal> <replaceable>varname</replaceable> } <optional>, ...</optional></optional>
+ <optional> { <literal>TRUE</literal> | <literal>FALSE</literal> |<literal> UNKNOWN</literal> | <literal>ERROR</literal> } <literal>ON ERROR</literal> </optional>)
+ </para>
+ <para>
+ Returns true if the SQL/JSON <replaceable>path_expression</replaceable>
+ applied to the <replaceable>context_item</replaceable> using the
+ <replaceable>value</replaceable>s yields any items.
+ The <literal>ON ERROR</literal> clause specifies the behavior if
+ an error occurs; the default is to return the <type>boolean</type>
+ <literal>FALSE</literal> value.
+ Note that if the <replaceable>path_expression</replaceable>
+ is <literal>strict</literal> and <literal>ON ERROR</literal> behavior
+ is <literal>ON ERROR</literal>, an error is generated if it yields no
+ items.
+ </para>
+ <para>
+ Examples:
+ </para>
+ <para>
+ <literal>select json_exists(jsonb '{"key1": [1,2,3]}', 'strict $.key1[*] ? (@ > 2)')</literal>
+ <returnvalue>t</returnvalue>
+ </para>
+ <para>
+ <literal>select json_exists(jsonb '{"a": [1,2,3]}', 'lax $.a[5]' ERROR ON ERROR)</literal>
+ <returnvalue>f</returnvalue>
+ </para>
+ <para>
+ <literal>select json_exists(jsonb '{"a": [1,2,3]}', 'strict $.a[5]' ERROR ON ERROR)</literal>
+ <returnvalue></returnvalue>
+<programlisting>
+ERROR: jsonpath array subscript is out of bounds
+</programlisting>
+ </para></entry>
+ </row>
+ <row>
+ <entry role="func_table_entry"><para role="func_signature">
+ <indexterm><primary>json_query</primary></indexterm>
+ <function>json_query</function> (
+ <replaceable>context_item</replaceable>, <replaceable>path_expression</replaceable> <optional> <literal>PASSING</literal> { <replaceable>value</replaceable> <literal>AS</literal> <replaceable>varname</replaceable> } <optional>, ...</optional></optional>
+ <optional> <literal>RETURNING</literal> <replaceable>data_type</replaceable> <optional> <literal>FORMAT JSON</literal> <optional> <literal>ENCODING UTF8</literal> </optional> </optional> </optional>
+ <optional> { <literal>WITHOUT</literal> | <literal>WITH</literal> { <literal>CONDITIONAL</literal> | <optional><literal>UNCONDITIONAL</literal></optional> } } <optional> <literal>ARRAY</literal> </optional> <literal>WRAPPER</literal> </optional>
+ <optional> { <literal>KEEP</literal> | <literal>OMIT</literal> } <literal>QUOTES</literal> <optional> <literal>ON SCALAR STRING</literal> </optional> </optional>
+ <optional> { <literal>ERROR</literal> | <literal>NULL</literal> | <literal>EMPTY</literal> { <optional> <literal>ARRAY</literal> </optional> | <literal>OBJECT</literal> } | <literal>DEFAULT</literal> <replaceable>expression</replaceable> } <literal>ON EMPTY</literal> </optional>
+ <optional> { <literal>ERROR</literal> | <literal>NULL</literal> | <literal>EMPTY</literal> { <optional> <literal>ARRAY</literal> </optional> | <literal>OBJECT</literal> } | <literal>DEFAULT</literal> <replaceable>expression</replaceable> } <literal>ON ERROR</literal> </optional>)
+ </para>
+ <para>
+ Returns the result of applying the
+ <replaceable>path_expression</replaceable> to the
+ <replaceable>context_item</replaceable> using the
+ <replaceable>value</replaceable>s.
+ </para>
+ <para>
+ This function must return a JSON string, so if the path expression
+ returns multiple SQL/JSON items, you must wrap the result using the
+ <literal>WITH WRAPPER</literal> clause. If the wrapper is
+ <literal>UNCONDITIONAL</literal>, an array wrapper will always be
+ applied, even if the returned value is already a single JSON object
+ or an array. If the wrapper is <literal>UNCONDITIONAL</literal>, an
+ array wrapper will always be applied, even if the returned value is
+ already a single JSON object or an array. If it is
+ <literal>CONDITIONAL</literal>, it will not be applied to a single
+ array or object. <literal>UNCONDITIONAL</literal> is the default.
+ </para>
+ <para>
+ If the result is a scalar string, by default the value returned will
+ have surrounding quotes making it a valid JSON value,
+ which can be made explicit by specifying <literal>KEEP QUOTES</literal>.
+ Conversely, quotes can be omitted by specifying <literal>OMIT QUOTES</literal>.
+ Note that <literal>OMIT QUOTES</literal> cannot be specified when
+ <literal>WITH WRAPPER</literal> is also specified.
+ </para>
+ <para>
+ The <literal>RETURNING</literal> clause can be used to specify the
+ <replaceable>data_type</replaceable> of the result value. It must
+ be a type for which there is a cast from <type>text</type> to that type.
+ If no <literal>RETURNING</literal> is spcified, the returned value will
+ be of type <type>jsonb</type>.
+ </para>
+ <para>
+ The <literal>ON EMPTY</literal> clause specifies the behavior if the
+ <replaceable>path_expression</replaceable> yields no value at all; the
+ default when <literal>ON EMPTY</literal> is not specified is to return
+ a null value.
+ </para>
+ <para>
+ The <literal>ON ERROR</literal> clause specifies the
+ behavior if an error occurs when evaluating
+ <type>path_expression</type>, including the operation to cast the
+ result the output type, or during the execution of
+ <literal>ON EMPTY</literal> behavior (that was caused by empty result of
+ <type>path_expression</type> evaluation); the default when
+ <literal>ON ERROR</literal> is not specified is to return a null value.
+ </para>
+ <para>
+ Examples:
+ </para>
+ <para>
+ <literal>select json_query(jsonb '[1,[2,3],null]', 'lax $[*][1]' WITH CONDITIONAL WRAPPER)</literal>
+ <returnvalue>[3]</returnvalue>
+ </para>
+ <para>
+ <literal>select json_query(jsonb '{"a": "[1, 2]"}', 'lax $.a' OMIT QUOTES);</literal>
+ <returnvalue>[1, 2]</returnvalue>
+ </para>
+ <para>
+ <literal>select json_query(jsonb '{"a": "[1, 2]"}', 'lax $.a' RETURNING int[] OMIT QUOTES);</literal>
+ <returnvalue></returnvalue>
+ </para>
+ <para>
+ <literal>select json_query(jsonb '{"a": "[1, 2]"}', 'lax $.a' RETURNING int[] OMIT QUOTES ERROR ON ERROR);</literal>
+ <returnvalue></returnvalue>
+<programlisting>
+ERROR: malformed array literal: "[1, 2]"
+DETAIL: Missing "]" after array dimensions.
+</programlisting>
+ </para>
+ </entry>
+ </row>
+ <row>
+ <entry role="func_table_entry"><para role="func_signature">
+ <indexterm><primary>json_value</primary></indexterm>
+ <function>json_value</function> (
+ <replaceable>context_item</replaceable>, <replaceable>path_expression</replaceable>
+ <optional> <literal>PASSING</literal> { <replaceable>value</replaceable> <literal>AS</literal> <replaceable>varname</replaceable> } <optional>, ...</optional></optional>
+ <optional> <literal>RETURNING</literal> <replaceable>data_type</replaceable> </optional>
+ <optional> { <literal>ERROR</literal> | <literal>NULL</literal> | <literal>DEFAULT</literal> <replaceable>expression</replaceable> } <literal>ON EMPTY</literal> </optional>
+ <optional> { <literal>ERROR</literal> | <literal>NULL</literal> | <literal>DEFAULT</literal> <replaceable>expression</replaceable> } <literal>ON ERROR</literal> </optional>)
+ </para>
+ <para>
+ Returns the result of applying the
+ <replaceable>path_expression</replaceable> to the
+ <replaceable>context_item</replaceable> using the
+ <literal>PASSING</literal> <replaceable>value</replaceable>s. The
+ extracted value must be a single <acronym>SQL/JSON</acronym> scalar
+ item. For results that are objects or arrays, use the
+ <function>json_query</function> function instead.
+ The <literal>RETURNING</literal> clause can be used to specify the
+ <replaceable>data_type</replaceable> of the result value. It must
+ be a type for which there are casts from all possible JSON scalar
+ value types (<type>text</type>, <type>boolean</type>, <type>numeric</type>,
+ and various datetime types) to that type. If no <literal>RETURNING</literal>
+ is spcified, the returned value will be of type <type>text</type>.
+ The <literal>ON ERROR</literal> and <literal>ON EMPTY</literal>
+ clauses have similar semantics as mentioned in the description of
+ <function>json_query</function>. Note that scalar strings returned
+ by <function>json_value</function> always have their quotes removed,
+ equivalent to what one would get with <literal>OMIT QUOTES</literal>
+ when using <function>json_query</function>.
+ </para>
+ <para>
+ Examples:
+ </para>
+ <para>
+ <literal>select json_value(jsonb '"123.45"', '$' RETURNING float)</literal>
+ <returnvalue>123.45</returnvalue>
+ </para>
+ <para>
+ <literal>select json_value(jsonb '"03:04 2015-02-01"', '$.datetime("HH24:MI YYYY-MM-DD")' RETURNING date)</literal>
+ <returnvalue>2015-02-01</returnvalue>
+ </para>
+ <para>
+ <literal>select json_value(jsonb '[1,2]', 'strict $[*]' DEFAULT 9 ON ERROR)</literal>
+ <returnvalue>9</returnvalue>
+ </para></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </table>
+ </sect2>
</sect1>
<sect1 id="functions-sequence">
diff --git a/src/backend/catalog/sql_features.txt b/src/backend/catalog/sql_features.txt
index 925d15a2c3..80ac59fba4 100644
--- a/src/backend/catalog/sql_features.txt
+++ b/src/backend/catalog/sql_features.txt
@@ -547,15 +547,15 @@ T811 Basic SQL/JSON constructor functions YES
T812 SQL/JSON: JSON_OBJECTAGG YES
T813 SQL/JSON: JSON_ARRAYAGG with ORDER BY YES
T814 Colon in JSON_OBJECT or JSON_OBJECTAGG YES
-T821 Basic SQL/JSON query operators NO
+T821 Basic SQL/JSON query operators YES
T822 SQL/JSON: IS JSON WITH UNIQUE KEYS predicate YES
-T823 SQL/JSON: PASSING clause NO
+T823 SQL/JSON: PASSING clause YES
T824 JSON_TABLE: specific PLAN clause NO
-T825 SQL/JSON: ON EMPTY and ON ERROR clauses NO
-T826 General value expression in ON ERROR or ON EMPTY clauses NO
+T825 SQL/JSON: ON EMPTY and ON ERROR clauses YES
+T826 General value expression in ON ERROR or ON EMPTY clauses YES
T827 JSON_TABLE: sibling NESTED COLUMNS clauses NO
-T828 JSON_QUERY NO
-T829 JSON_QUERY: array wrapper options NO
+T828 JSON_QUERY YES
+T829 JSON_QUERY: array wrapper options YES
T830 Enforcing unique keys in SQL/JSON constructor functions YES
T831 SQL/JSON path language: strict mode YES
T832 SQL/JSON path language: item method YES
diff --git a/src/backend/executor/execExpr.c b/src/backend/executor/execExpr.c
index 3181b1136a..ea67644543 100644
--- a/src/backend/executor/execExpr.c
+++ b/src/backend/executor/execExpr.c
@@ -49,6 +49,7 @@
#include "utils/builtins.h"
#include "utils/datum.h"
#include "utils/jsonfuncs.h"
+#include "utils/jsonpath.h"
#include "utils/lsyscache.h"
#include "utils/typcache.h"
@@ -88,6 +89,12 @@ static void ExecBuildAggTransCall(ExprState *state, AggState *aggstate,
FunctionCallInfo fcinfo, AggStatePerTrans pertrans,
int transno, int setno, int setoff, bool ishash,
bool nullcheck);
+static void ExecInitJsonExpr(JsonExpr *jexpr, ExprState *state,
+ Datum *resv, bool *resnull,
+ ExprEvalStep *scratch);
+static int ExecInitJsonExprCoercion(ExprState *state, Node *coercion,
+ ErrorSaveContext *escontext,
+ Datum *resv, bool *resnull);
/*
@@ -2413,6 +2420,14 @@ ExecInitExprRec(Expr *node, ExprState *state,
break;
}
+ case T_JsonExpr:
+ {
+ JsonExpr *jexpr = castNode(JsonExpr, node);
+
+ ExecInitJsonExpr(jexpr, state, resv, resnull, &scratch);
+ break;
+ }
+
case T_NullTest:
{
NullTest *ntest = (NullTest *) node;
@@ -4181,3 +4196,337 @@ ExecBuildParamSetEqual(TupleDesc desc,
return state;
}
+
+/*
+ * Push steps to evaluate a JsonExpr and its various subsidiary expressions.
+ */
+static void
+ExecInitJsonExpr(JsonExpr *jexpr, ExprState *state,
+ Datum *resv, bool *resnull,
+ ExprEvalStep *scratch)
+{
+ JsonExprState *jsestate = palloc0(sizeof(JsonExprState));
+ JsonExprPostEvalState *post_eval = &jsestate->post_eval;
+ ListCell *argexprlc;
+ ListCell *argnamelc;
+ List *jumps_if_skip = NIL;
+ List *jumps_to_coerce_finish = NIL;
+ List *jumps_to_end = NIL;
+ ListCell *lc;
+ ExprEvalStep *as;
+
+ jsestate->jsexpr = jexpr;
+
+ /*
+ * Evaluate formatted_expr storing the result into
+ * jsestate->formatted_expr.
+ */
+ ExecInitExprRec((Expr *) jexpr->formatted_expr, state,
+ &jsestate->formatted_expr.value,
+ &jsestate->formatted_expr.isnull);
+
+ /* Steps to jump to end if formatted_expr evaluates to NULL */
+ scratch->opcode = EEOP_JUMP_IF_NULL;
+ scratch->resnull = &jsestate->formatted_expr.isnull;
+ scratch->d.jump.jumpdone = -1; /* set below */
+ jumps_if_skip = lappend_int(jumps_if_skip, state->steps_len);
+ ExprEvalPushStep(state, scratch);
+
+ /*
+ * Evaluate pathspec expression storing the result into
+ * jsestate->pathspec.
+ */
+ ExecInitExprRec((Expr *) jexpr->path_spec, state,
+ &jsestate->pathspec.value,
+ &jsestate->pathspec.isnull);
+
+ /* Steps to JUMP to end if pathspec evaluates to NULL */
+ scratch->opcode = EEOP_JUMP_IF_NULL;
+ scratch->resnull = &jsestate->pathspec.isnull;
+ scratch->d.jump.jumpdone = -1; /* set below */
+ jumps_if_skip = lappend_int(jumps_if_skip, state->steps_len);
+ ExprEvalPushStep(state, scratch);
+
+ /* Steps to compute PASSING args. */
+ jsestate->args = NIL;
+ forboth(argexprlc, jexpr->passing_values,
+ argnamelc, jexpr->passing_names)
+ {
+ Expr *argexpr = (Expr *) lfirst(argexprlc);
+ String *argname = lfirst_node(String, argnamelc);
+ JsonPathVariable *var = palloc(sizeof(*var));
+
+ var->name = argname->sval;
+ var->typid = exprType((Node *) argexpr);
+ var->typmod = exprTypmod((Node *) argexpr);
+
+ ExecInitExprRec((Expr *) argexpr, state, &var->value, &var->isnull);
+
+ jsestate->args = lappend(jsestate->args, var);
+ }
+
+ /* Step for JsonPath* evaluation; see ExecEvalJsonExprPath(). */
+ scratch->opcode = EEOP_JSONEXPR_PATH;
+ scratch->resvalue = resv;
+ scratch->resnull = resnull;
+ scratch->d.jsonexpr.jsestate = jsestate;
+ ExprEvalPushStep(state, scratch);
+
+ /*
+ * Step to jump to end when there's neither an error when evaluating
+ * JsonPath* nor any need to coerce the result because it's already of the
+ * specified type.
+ */
+ scratch->opcode = EEOP_JUMP;
+ scratch->d.jump.jumpdone = -1; /* set below */
+ jumps_to_end = lappend_int(jumps_to_end, state->steps_len);
+ ExprEvalPushStep(state, scratch);
+
+ /*
+ * Steps to coerce the result value computed by EEOP_JSONEXPR_PATH. To
+ * handle coercion errors softly, use the following ErrorSaveContext when
+ * initializing the coercion expressions, including any JsonCoercion
+ * nodes.
+ */
+ jsestate->escontext.type = T_ErrorSaveContext;
+ if (jexpr->result_coercion)
+ {
+ jsestate->jump_eval_result_coercion =
+ ExecInitJsonExprCoercion(state, jexpr->result_coercion,
+ jexpr->on_error->btype != JSON_BEHAVIOR_ERROR ?
+ &jsestate->escontext : NULL,
+ resv, resnull);
+ /* Jump to COERCION_FINISH. */
+ scratch->opcode = EEOP_JUMP;
+ scratch->d.jump.jumpdone = -1; /* set below */
+ jumps_to_coerce_finish = lappend_int(jumps_to_coerce_finish,
+ state->steps_len);
+ ExprEvalPushStep(state, scratch);
+ }
+ else
+ jsestate->jump_eval_result_coercion = -1;
+
+ /* Steps for coercing JsonItemType values returned by JsonPathValue(). */
+ if (jexpr->item_coercions)
+ {
+ /*
+ * Here we create the steps for each JsonItemType type's coercion
+ * expression and also store a flag whether the expression is a
+ * JsonCoercion node. ExecPrepareJsonItemCoercion() called by
+ * ExecEvalJsonExprPath() will map a given JsonbValue returned by
+ * JsonPathValue() to its JsonItemType's expression's step address
+ * and the flag by indexing the following arrays with JsonItemType
+ * enum value.
+ */
+ jsestate->num_item_coercions = list_length(jexpr->item_coercions);
+ jsestate->eval_item_coercion_jumps = (int *)
+ palloc(jsestate->num_item_coercions * sizeof(int));
+ jsestate->item_coercion_via_expr = (bool *)
+ palloc0(jsestate->num_item_coercions * sizeof(bool));
+ foreach(lc, jexpr->item_coercions)
+ {
+ JsonItemCoercion *item_coercion = lfirst(lc);
+ Node *coercion = item_coercion->coercion;
+
+ jsestate->item_coercion_via_expr[item_coercion->item_type] =
+ (coercion != NULL && !IsA(coercion, JsonCoercion));
+ jsestate->eval_item_coercion_jumps[item_coercion->item_type] =
+ ExecInitJsonExprCoercion(state, coercion,
+ jexpr->on_error->btype != JSON_BEHAVIOR_ERROR ?
+ &jsestate->escontext : NULL,
+ resv, resnull);
+
+ /* Jump to COERCION_FINISH. */
+ scratch->opcode = EEOP_JUMP;
+ scratch->d.jump.jumpdone = -1; /* set below */
+ jumps_to_coerce_finish = lappend_int(jumps_to_coerce_finish,
+ state->steps_len);
+ ExprEvalPushStep(state, scratch);
+ }
+ }
+
+ /*
+ * Add step to reset the ErrorSaveContext and set error flag if the
+ * coercion steps encountered an error but was not thrown because of the
+ * ON ERROR behavior.
+ */
+ if (jexpr->result_coercion || jexpr->item_coercions)
+ {
+ foreach(lc, jumps_to_coerce_finish)
+ {
+ as = &state->steps[lfirst_int(lc)];
+ as->d.jump.jumpdone = state->steps_len;
+ }
+
+ scratch->opcode = EEOP_JSONEXPR_COERCION_FINISH;
+ scratch->d.jsonexpr.jsestate = jsestate;
+ ExprEvalPushStep(state, scratch);
+ }
+
+ jsestate->jump_empty = jsestate->jump_error = -1;
+
+ /*
+ * Step to handle ON ERROR behaviors. This handles both the errors that
+ * occur during EEOP_JSONEXPR_PATH evaluation and subsequent coercion
+ * evaluation.
+ */
+ if (jexpr->on_error &&
+ jexpr->on_error->btype != JSON_BEHAVIOR_ERROR)
+ {
+ jsestate->jump_error = state->steps_len;
+ scratch->opcode = EEOP_JUMP_IF_NOT_TRUE;
+
+ /*
+ * post_eval.error is set by ExecEvalJsonExprPath() and
+ * ExecEvalJsonCoercionFinish().
+ */
+ scratch->resvalue = &post_eval->error.value;
+ scratch->resnull = &post_eval->error.isnull;
+ scratch->d.jump.jumpdone = -1; /* set below */
+ jumps_to_end = lappend_int(jumps_to_end, state->steps_len);
+ ExprEvalPushStep(state, scratch);
+
+ /* Steps to evaluate the ON ERROR expression */
+ ExecInitExprRec((Expr *) jexpr->on_error->expr,
+ state, resv, resnull);
+
+ /* Steps to coerce the ON ERROR expression if needed */
+ (void) ExecInitJsonExprCoercion(state,
+ (Node *) jexpr->on_error->coercion,
+ &jsestate->escontext,
+ resv, resnull);
+
+ jumps_to_end = lappend_int(jumps_to_end, state->steps_len);
+ scratch->opcode = EEOP_JUMP;
+ scratch->d.jump.jumpdone = -1;
+ ExprEvalPushStep(state, scratch);
+ }
+
+ /* Step to handle ON EMPTY behaviors. */
+ if (jexpr->on_empty != NULL &&
+ jexpr->on_empty->btype != JSON_BEHAVIOR_ERROR)
+ {
+ jsestate->jump_empty = state->steps_len;
+
+ scratch->opcode = EEOP_JUMP_IF_NOT_TRUE;
+ scratch->resvalue = &post_eval->empty.value;
+ scratch->resnull = &post_eval->empty.isnull;
+ scratch->d.jump.jumpdone = -1; /* set below */
+ jumps_to_end = lappend_int(jumps_to_end, state->steps_len);
+ ExprEvalPushStep(state, scratch);
+
+ /* Steps to evaluate the ON EMPTY expression */
+ ExecInitExprRec((Expr *) jexpr->on_empty->expr,
+ state, resv, resnull);
+
+ /* Steps to coerce the ON EMPTY expression if needed */
+ (void) ExecInitJsonExprCoercion(state,
+ (Node *) jexpr->on_empty->coercion,
+ &jsestate->escontext,
+ resv, resnull);
+
+ scratch->opcode = EEOP_JUMP;
+ scratch->d.jump.jumpdone = -1; /* set below */
+ jumps_to_end = lappend_int(jumps_to_end, state->steps_len);
+ ExprEvalPushStep(state, scratch);
+ }
+
+ if (jsestate->jump_error < 0 && jsestate->jump_empty < 0)
+ {
+ scratch->opcode = EEOP_JUMP;
+ scratch->d.jump.jumpdone = -1; /* set below */
+ jumps_to_end = lappend_int(jumps_to_end, state->steps_len);
+ ExprEvalPushStep(state, scratch);
+ }
+
+ /* Return NULL when either formatted_expr or pathspec is NULL. */
+ foreach(lc, jumps_if_skip)
+ {
+ as = &state->steps[lfirst_int(lc)];
+ as->d.jump.jumpdone = state->steps_len;
+ }
+ scratch->opcode = EEOP_CONST;
+ scratch->resvalue = resv;
+ scratch->resnull = resnull;
+ scratch->d.constval.value = (Datum) 0;
+ scratch->d.constval.isnull = true;
+ ExprEvalPushStep(state, scratch);
+
+ /* Jump to coerce the NULL using result_coercion is present. */
+ if (jsestate->jump_eval_result_coercion >= 0)
+ {
+ scratch->opcode = EEOP_JUMP;
+ scratch->d.jump.jumpdone = jsestate->jump_eval_result_coercion;
+ ExprEvalPushStep(state, scratch);
+ }
+
+ foreach(lc, jumps_to_end)
+ {
+ as = &state->steps[lfirst_int(lc)];
+ as->d.jump.jumpdone = state->steps_len;
+ }
+
+ jsestate->jump_end = state->steps_len;
+}
+
+/* Initialize one JsonCoercion for execution. */
+static int
+ExecInitJsonExprCoercion(ExprState *state, Node *coercion_expr,
+ ErrorSaveContext *escontext,
+ Datum *resv, bool *resnull)
+{
+ int jump_eval_coercion;
+ Datum *save_innermost_caseval;
+ bool *save_innermost_casenull;
+ ErrorSaveContext *save_escontext;
+
+ if (coercion_expr == NULL)
+ return -1;
+
+ jump_eval_coercion = state->steps_len;
+ if (IsA(coercion_expr, JsonCoercion))
+ {
+ JsonCoercion *coercion = (JsonCoercion *) coercion_expr;
+ ExprEvalStep scratch = {0};
+ Oid typinput;
+ FmgrInfo *finfo;
+ Oid typioparam;
+
+ getTypeInputInfo(((JsonCoercion *) coercion)->targettype,
+ &typinput, &typioparam);
+ finfo = palloc0(sizeof(FmgrInfo));
+ fmgr_info(typinput, finfo);
+
+ scratch.opcode = EEOP_JSONEXPR_COERCION;
+ scratch.resvalue = resv;
+ scratch.resnull = resnull;
+ scratch.d.jsonexpr_coercion.coercion = coercion;
+ scratch.d.jsonexpr_coercion.input_finfo = finfo;
+ scratch.d.jsonexpr_coercion.typioparam = typioparam;
+ scratch.d.jsonexpr_coercion.json_populate_type_cache = NULL;
+ scratch.d.jsonexpr_coercion.escontext = escontext;
+ ExprEvalPushStep(state, &scratch);
+ /* Initialize the cast expression below, if any. */
+ if (coercion->cast_expr != NULL)
+ coercion_expr = coercion->cast_expr;
+ else
+ return jump_eval_coercion;
+ }
+
+ /* Push step(s) to compute cstate->coercion. */
+ save_innermost_caseval = state->innermost_caseval;
+ save_innermost_casenull = state->innermost_casenull;
+ save_escontext = state->escontext;
+
+ state->innermost_caseval = resv;
+ state->innermost_casenull = resnull;
+ state->escontext = escontext;
+
+ ExecInitExprRec((Expr *) coercion_expr, state, resv, resnull);
+
+ state->innermost_caseval = save_innermost_caseval;
+ state->innermost_casenull = save_innermost_casenull;
+ state->escontext = save_escontext;
+
+ return jump_eval_coercion;
+}
diff --git a/src/backend/executor/execExprInterp.c b/src/backend/executor/execExprInterp.c
index 3f20f1dd31..e6b69556f2 100644
--- a/src/backend/executor/execExprInterp.c
+++ b/src/backend/executor/execExprInterp.c
@@ -73,8 +73,8 @@
#include "utils/datum.h"
#include "utils/expandedrecord.h"
#include "utils/json.h"
-#include "utils/jsonb.h"
#include "utils/jsonfuncs.h"
+#include "utils/jsonpath.h"
#include "utils/lsyscache.h"
#include "utils/memutils.h"
#include "utils/timestamp.h"
@@ -181,6 +181,10 @@ static pg_attribute_always_inline void ExecAggPlainTransByRef(AggState *aggstate
AggStatePerGroup pergroup,
ExprContext *aggcontext,
int setno);
+static void ExecPrepareJsonItemCoercion(JsonbValue *item, JsonExprState *jsestate,
+ bool throw_error,
+ int *jump_eval_item_coercion,
+ Datum *resvalue, bool *resnull);
/*
* ScalarArrayOpExprHashEntry
@@ -482,6 +486,9 @@ ExecInterpExpr(ExprState *state, ExprContext *econtext, bool *isnull)
&&CASE_EEOP_XMLEXPR,
&&CASE_EEOP_JSON_CONSTRUCTOR,
&&CASE_EEOP_IS_JSON,
+ &&CASE_EEOP_JSONEXPR_PATH,
+ &&CASE_EEOP_JSONEXPR_COERCION,
+ &&CASE_EEOP_JSONEXPR_COERCION_FINISH,
&&CASE_EEOP_AGGREF,
&&CASE_EEOP_GROUPING_FUNC,
&&CASE_EEOP_WINDOW_FUNC,
@@ -1554,6 +1561,28 @@ ExecInterpExpr(ExprState *state, ExprContext *econtext, bool *isnull)
EEO_NEXT();
}
+ EEO_CASE(EEOP_JSONEXPR_PATH)
+ {
+ /* too complex for an inline implementation */
+ EEO_JUMP(ExecEvalJsonExprPath(state, op, econtext));
+ }
+
+ EEO_CASE(EEOP_JSONEXPR_COERCION)
+ {
+ /* too complex for an inline implementation */
+ ExecEvalJsonCoercion(state, op, econtext);
+
+ EEO_NEXT();
+ }
+
+ EEO_CASE(EEOP_JSONEXPR_COERCION_FINISH)
+ {
+ /* too complex for an inline implementation */
+ ExecEvalJsonCoercionFinish(state, op);
+
+ EEO_NEXT();
+ }
+
EEO_CASE(EEOP_AGGREF)
{
/*
@@ -4214,6 +4243,358 @@ ExecEvalJsonIsPredicate(ExprState *state, ExprEvalStep *op)
*op->resvalue = BoolGetDatum(res);
}
+/*
+ * Performs JsonPath{Exists|Query|Value}() for given context item and JSON
+ * path.
+ *
+ * Result is set in *op->resvalue and *op->resnull. Return value is the
+ * step address to be performed next.
+ *
+ * On return, JsonExprPostEvalState is populated with the following details:
+ * - error.value: true if an error occurred during JsonPath evaluation
+ * - empty.value: true if JsonPath{Query|Value}() found no matching item
+ *
+ * No return if the ON ERROR/EMPTY behavior is ERROR.
+ */
+int
+ExecEvalJsonExprPath(ExprState *state, ExprEvalStep *op,
+ ExprContext *econtext)
+{
+ JsonExprState *jsestate = op->d.jsonexpr.jsestate;
+ JsonExprPostEvalState *post_eval = &jsestate->post_eval;
+ JsonExpr *jexpr = jsestate->jsexpr;
+ Datum item;
+ JsonPath *path;
+ bool throw_error = jexpr->on_error->btype == JSON_BEHAVIOR_ERROR;
+ bool error = false,
+ empty = false;
+
+ /* Might get overridden for JSON_VALUE_OP by an per-item coercion. */
+ int jump_eval_coercion = jsestate->jump_eval_result_coercion;
+
+ item = jsestate->formatted_expr.value;
+ path = DatumGetJsonPathP(jsestate->pathspec.value);
+
+ /* Reset JsonExprPostEvalState for this evaluation. */
+ memset(post_eval, 0, sizeof(*post_eval));
+ switch (jexpr->op)
+ {
+ case JSON_EXISTS_OP:
+ {
+ bool exists = JsonPathExists(item, path,
+ !throw_error ? &error : NULL,
+ jsestate->args);
+
+ if (!error)
+ {
+ *op->resvalue = BoolGetDatum(exists);
+ *op->resnull = false;
+ }
+ }
+ break;
+
+ case JSON_QUERY_OP:
+ *op->resvalue = JsonPathQuery(item, path, jexpr->wrapper, &empty,
+ !throw_error ? &error : NULL,
+ jsestate->args);
+
+ if (!error && !empty)
+ *op->resnull = (DatumGetPointer(*op->resvalue) == NULL);
+ break;
+
+ case JSON_VALUE_OP:
+ {
+ JsonbValue *jbv = JsonPathValue(item, path, &empty,
+ !throw_error ? &error : NULL,
+ jsestate->args);
+
+ if (jbv == NULL)
+ {
+ /* Will be coerced with result_coercion. */
+ *op->resvalue = (Datum) 0;
+ *op->resnull = true;
+ }
+ else if (!error && !empty)
+ {
+ /*
+ * If the requested output type is json(b), use
+ * result_coercion to do the coercion.
+ */
+ if (jexpr->returning->typid == JSONOID ||
+ jexpr->returning->typid == JSONBOID)
+ {
+ *op->resvalue = JsonbPGetDatum(JsonbValueToJsonb(jbv));
+ *op->resnull = false;
+ }
+ else
+ {
+ /*
+ * Else, use one of the item_coercions.
+ *
+ * Error out if no cast expression exists.
+ */
+ ExecPrepareJsonItemCoercion(jbv, jsestate, throw_error,
+ &jump_eval_coercion,
+ op->resvalue, op->resnull);
+ }
+ }
+ break;
+ }
+
+ default:
+ elog(ERROR, "unrecognized SQL/JSON expression op %d", jexpr->op);
+ return false;
+ }
+
+ if (empty)
+ {
+ if (jexpr->on_empty)
+ {
+ if (jexpr->on_empty->btype == JSON_BEHAVIOR_ERROR)
+ ereport(ERROR,
+ errcode(ERRCODE_NO_SQL_JSON_ITEM),
+ errmsg("no SQL/JSON item"));
+ else
+ post_eval->empty.value = BoolGetDatum(true);
+
+ Assert(jsestate->jump_empty >= 0);
+ return jsestate->jump_empty;
+ }
+ else if (jexpr->on_error->btype == JSON_BEHAVIOR_ERROR)
+ ereport(ERROR,
+ errcode(ERRCODE_NO_SQL_JSON_ITEM),
+ errmsg("no SQL/JSON item"));
+ else
+ post_eval->error.value = BoolGetDatum(true);
+
+ *op->resvalue = (Datum) 0;
+ *op->resnull = true;
+
+ Assert(jsestate->jump_error >= 0);
+ return jsestate->jump_error;
+ }
+
+ if (error)
+ {
+ Assert(!throw_error && jsestate->jump_error >= 0);
+ *op->resvalue = (Datum) 0;
+ *op->resnull = true;
+ post_eval->error.value = BoolGetDatum(true);
+ return jsestate->jump_error;
+ }
+
+ /* Else return the coercion step address or the address to skip to end. */
+ return jump_eval_coercion >= 0 ? jump_eval_coercion : jsestate->jump_end;
+}
+
+/*
+ * Selects a coercion for a given JsonbValue based on its type.
+ *
+ * On return, *resvalue and *resnull are set to the value extracted from the
+ * JsonbValue and *jump_eval_item_coercion is set to the step address of the
+ * coercion expression.
+ *
+ * If the found expression is a JsonCoercion node that means the parser
+ * didnt' find a cast to do the coercion, so throw an error if the
+ * ON ERROR behavior says to do so.
+ */
+static void
+ExecPrepareJsonItemCoercion(JsonbValue *item, JsonExprState *jsestate,
+ bool throw_error,
+ int *jump_eval_item_coercion,
+ Datum *resvalue, bool *resnull)
+{
+ int *eval_item_coercion_jumps = jsestate->eval_item_coercion_jumps;
+ bool *item_coercion_via_expr = jsestate->item_coercion_via_expr;
+ bool via_expr;
+ int jump_to;
+ JsonbValue buf;
+
+ if (item->type == jbvBinary && JsonContainerIsScalar(item->val.binary.data))
+ {
+ bool is_scalar PG_USED_FOR_ASSERTS_ONLY;
+
+ is_scalar = JsonbExtractScalar(item->val.binary.data, &buf);
+ item = &buf;
+ Assert(is_scalar);
+ }
+
+ *resnull = false;
+
+ /* get coercion state reference and datum of the corresponding SQL type */
+ switch (item->type)
+ {
+ case jbvNull:
+ via_expr = item_coercion_via_expr[JsonItemTypeNull];
+ jump_to = eval_item_coercion_jumps[JsonItemTypeNull];
+ *resvalue = (Datum) 0;
+ *resnull = true;
+ break;
+
+ case jbvString:
+ via_expr = item_coercion_via_expr[JsonItemTypeString];
+ jump_to = eval_item_coercion_jumps[JsonItemTypeString];
+ *resvalue =
+ PointerGetDatum(cstring_to_text_with_len(item->val.string.val,
+ item->val.string.len));
+ break;
+
+ case jbvNumeric:
+ via_expr = item_coercion_via_expr[JsonItemTypeNumeric];
+ jump_to = eval_item_coercion_jumps[JsonItemTypeNumeric];
+ *resvalue = NumericGetDatum(item->val.numeric);
+ break;
+
+ case jbvBool:
+ via_expr = item_coercion_via_expr[JsonItemTypeBoolean];
+ jump_to = eval_item_coercion_jumps[JsonItemTypeBoolean];
+ *resvalue = BoolGetDatum(item->val.boolean);
+ break;
+
+ case jbvDatetime:
+ *resvalue = item->val.datetime.value;
+ switch (item->val.datetime.typid)
+ {
+ case DATEOID:
+ via_expr = item_coercion_via_expr[JsonItemTypeDate];
+ jump_to = eval_item_coercion_jumps[JsonItemTypeDate];
+ break;
+ case TIMEOID:
+ via_expr = item_coercion_via_expr[JsonItemTypeTime];
+ jump_to = eval_item_coercion_jumps[JsonItemTypeTime];
+ break;
+ case TIMETZOID:
+ via_expr = item_coercion_via_expr[JsonItemTypeTimetz];
+ jump_to = eval_item_coercion_jumps[JsonItemTypeTimetz];
+ break;
+ case TIMESTAMPOID:
+ via_expr = item_coercion_via_expr[JsonItemTypeTimestamp];
+ jump_to = eval_item_coercion_jumps[JsonItemTypeTimestamp];
+ break;
+ case TIMESTAMPTZOID:
+ via_expr = item_coercion_via_expr[JsonItemTypeTimestamptz];
+ jump_to = eval_item_coercion_jumps[JsonItemTypeTimestamptz];
+ break;
+ default:
+ elog(ERROR, "unexpected jsonb datetime type oid %u",
+ item->val.datetime.typid);
+ }
+ break;
+
+ case jbvArray:
+ case jbvObject:
+ case jbvBinary:
+ via_expr = item_coercion_via_expr[JsonItemTypeComposite];
+ jump_to = eval_item_coercion_jumps[JsonItemTypeComposite];
+ *resvalue = JsonbPGetDatum(JsonbValueToJsonb(item));
+ break;
+
+ default:
+ elog(ERROR, "unexpected jsonb value type %d", item->type);
+ }
+
+ /* If the expression is a JsonCoercion, throw an error. */
+ if (jump_to >= 0 && !via_expr)
+ {
+ if (throw_error)
+ ereport(ERROR,
+ errcode(ERRCODE_SQL_JSON_ITEM_CANNOT_BE_CAST_TO_TARGET_TYPE),
+ errmsg("SQL/JSON item cannot be cast to target type"));
+
+ *resvalue = (Datum) 0;
+ *resnull = true;
+ }
+
+ *jump_eval_item_coercion = jump_to;
+}
+
+/*
+ * Coerce a jsonb or a scalar string value produced by ExecEvalJsonExprPath()
+ * or an ON ERROR / EMPTY behavior expression to the target type.
+ *
+ * This is also responsible for removing any quotes present in a scalar source
+ * value before coercing to the target type if JsonCoercion.omit_quotes is
+ * true (the OMIT QUOTES clause).
+ *
+ * Any soft errors that occur here will be checked by
+ * EEOP_JSONEXPR_COERCION_FINISH that will run after this.
+ */
+void
+ExecEvalJsonCoercion(ExprState *state, ExprEvalStep *op,
+ ExprContext *econtext)
+{
+ JsonCoercion *coercion = op->d.jsonexpr_coercion.coercion;
+ ErrorSaveContext *escontext = op->d.jsonexpr_coercion.escontext;
+ Datum res = *op->resvalue;
+
+ /*
+ * Handle OMIT QUOTES.
+ *
+ * Normally, json_populate_type() is the place to coerce jsonb values to
+ * the requested target type, including those that are scalar strings, but
+ * it doesn't have the support for removing quotes to implement the
+ * OMIT QUOTES clause, so we handle it here.
+ */
+ if (coercion->omit_quotes)
+ {
+ FmgrInfo *input_finfo = op->d.jsonexpr_coercion.input_finfo;
+ Oid typioparam = op->d.jsonexpr_coercion.typioparam;
+ char *val = !*op->resnull ?
+ JsonbUnquote(DatumGetJsonbP(res)) : NULL;
+
+ /*
+ * If the coercion must be done using a cast expression, pass to it
+ * the text version of the quote-stripped string. If not, finish the
+ * coercion by calling the input function.
+ */
+ if (coercion->cast_expr)
+ *op->resvalue = DirectFunctionCall1(textin,
+ CStringGetDatum(val));
+ else
+ (void) InputFunctionCallSafe(input_finfo, val, typioparam,
+ coercion->targettypmod,
+ (Node *) escontext,
+ op->resvalue);
+ }
+ else
+ {
+ void *cache = op->d.jsonexpr_coercion.json_populate_type_cache;
+
+ *op->resvalue = json_populate_type(res, JSONBOID,
+ coercion->targettype,
+ coercion->targettypmod,
+ &cache,
+ econtext->ecxt_per_query_memory,
+ op->resnull, (Node *) escontext);
+ }
+}
+
+/*
+ * Checks if the coercion evaluation led to an error. If an error did occur,
+ * this sets post_eval->error to trigger the subsequent ON ERROR handling
+ * steps.
+ */
+void
+ExecEvalJsonCoercionFinish(ExprState *state, ExprEvalStep *op)
+{
+ JsonExprState *jsestate = op->d.jsonexpr.jsestate;
+
+ if (SOFT_ERROR_OCCURRED(&jsestate->escontext))
+ {
+ *op->resvalue = (Datum) 0;
+ *op->resnull = true;
+ jsestate->post_eval.error.value = BoolGetDatum(true);
+
+ /*
+ * Also make ErrorSaveContext ready for the next row. Since we never
+ * set details_wanted, we don't need to also reset error_data, which
+ * would be NULL anyway.
+ */
+ Assert(!jsestate->escontext.details_wanted &&
+ jsestate->escontext.error_data == NULL);
+ jsestate->escontext.error_occurred = false;
+ }
+}
/*
* ExecEvalGroupingFunc
diff --git a/src/backend/jit/llvm/llvmjit_expr.c b/src/backend/jit/llvm/llvmjit_expr.c
index 0c448422e2..32292f9ec8 100644
--- a/src/backend/jit/llvm/llvmjit_expr.c
+++ b/src/backend/jit/llvm/llvmjit_expr.c
@@ -1930,6 +1930,150 @@ llvm_compile_expr(ExprState *state)
LLVMBuildBr(b, opblocks[opno + 1]);
break;
+ case EEOP_JSONEXPR_PATH:
+ {
+ JsonExprState *jsestate = op->d.jsonexpr.jsestate;
+ LLVMValueRef v_ret;
+
+ /*
+ * Call ExecEvalJsonExprPath(). It returns the address of
+ * the step to perform next.
+ */
+ v_ret = build_EvalXFunc(b, mod, "ExecEvalJsonExprPath",
+ v_state, op, v_econtext);
+
+ /*
+ * Build a switch to map the return value, which is a
+ * runtime value of the step address to perform next, to
+ * either jump_empty, jump_error, or the coercion
+ * expression.
+ */
+ if (jsestate->jump_empty >= 0 ||
+ jsestate->jump_error >= 0 ||
+ jsestate->jump_eval_result_coercion >= 0 ||
+ jsestate->num_item_coercions > 0)
+ {
+ int i;
+ LLVMValueRef v_jump_empty;
+ LLVMValueRef v_jump_error;
+ LLVMValueRef v_jump_coercion;
+ LLVMValueRef v_switch;
+ LLVMBasicBlockRef b_done,
+ b_empty,
+ b_error,
+ b_result_coercion,
+ *b_item_coercions = NULL;
+
+ b_empty =
+ l_bb_before_v(opblocks[opno + 1],
+ "op.%d.jsonexpr_empty", opno);
+ b_error =
+ l_bb_before_v(opblocks[opno + 1],
+ "op.%d.jsonexpr_error", opno);
+ b_result_coercion =
+ l_bb_before_v(opblocks[opno + 1],
+ "op.%d.jsonexpr_result_coercion", opno);
+ if (jsestate->num_item_coercions > 0)
+ {
+ b_item_coercions = palloc(sizeof(LLVMBasicBlockRef) *
+ jsestate->num_item_coercions);
+ for (i = 0; i < jsestate->num_item_coercions; i++)
+ {
+ b_item_coercions[i] =
+ l_bb_before_v(opblocks[opno + 1],
+ "op.%d.jsonexpr_item_coercion.%d",
+ opno, i);
+ }
+ }
+ b_done =
+ l_bb_before_v(opblocks[opno + 1],
+ "op.%d.jsonexpr_done", opno);
+
+ v_switch = LLVMBuildSwitch(b,
+ v_ret,
+ b_done,
+ jsestate->num_item_coercions + 3);
+ /* Returned jsestate->jump_empty? */
+ if (jsestate->jump_empty >= 0)
+ {
+ v_jump_empty = l_int32_const(lc, jsestate->jump_empty);
+ LLVMAddCase(v_switch, v_jump_empty, b_empty);
+ }
+ /* Returned jsestate->jump_error? */
+ if (jsestate->jump_error >= 0)
+ {
+ v_jump_error = l_int32_const(lc, jsestate->jump_error);
+ LLVMAddCase(v_switch, v_jump_error, b_error);
+ }
+ /* Returned jsestate->jump_eval_result_coercion? */
+ if (jsestate->jump_eval_result_coercion >= 0)
+ {
+ v_jump_coercion = l_int32_const(lc, jsestate->jump_eval_result_coercion);
+ LLVMAddCase(v_switch, v_jump_coercion, b_result_coercion);
+ }
+
+ /*
+ * Returned one of
+ * jsestate->eval_item_coercion_jumps[]?
+ */
+ for (i = 0; i < jsestate->num_item_coercions; i++)
+ {
+ if (jsestate->eval_item_coercion_jumps[i] >= 0)
+ {
+ v_jump_coercion = l_int32_const(lc, jsestate->eval_item_coercion_jumps[i]);
+ LLVMAddCase(v_switch, v_jump_coercion, b_item_coercions[i]);
+ }
+ }
+
+ /* ON EMPTY code */
+ LLVMPositionBuilderAtEnd(b, b_empty);
+ if (jsestate->jump_empty >= 0)
+ LLVMBuildBr(b, opblocks[jsestate->jump_empty]);
+ else
+ LLVMBuildUnreachable(b);
+ /* ON ERROR code */
+ LLVMPositionBuilderAtEnd(b, b_error);
+ if (jsestate->jump_error >= 0)
+ LLVMBuildBr(b, opblocks[jsestate->jump_error]);
+ else
+ LLVMBuildUnreachable(b);
+ /* result_coercion code */
+ LLVMPositionBuilderAtEnd(b, b_result_coercion);
+ if (jsestate->jump_eval_result_coercion >= 0)
+ LLVMBuildBr(b, opblocks[jsestate->jump_eval_result_coercion]);
+ else
+ LLVMBuildUnreachable(b);
+ /* item coercion code blocks */
+ for (i = 0; i < jsestate->num_item_coercions; i++)
+ {
+ LLVMPositionBuilderAtEnd(b, b_item_coercions[i]);
+ if (jsestate->eval_item_coercion_jumps[i] >= 0)
+ LLVMBuildBr(b, opblocks[jsestate->eval_item_coercion_jumps[i]]);
+ else
+ LLVMBuildUnreachable(b);
+ }
+
+ LLVMPositionBuilderAtEnd(b, b_done);
+ }
+
+ LLVMBuildBr(b, opblocks[opno + 1]);
+ break;
+ }
+
+ case EEOP_JSONEXPR_COERCION:
+ build_EvalXFunc(b, mod, "ExecEvalJsonCoercion",
+ v_state, op, v_econtext);
+
+ LLVMBuildBr(b, opblocks[opno + 1]);
+ break;
+
+ case EEOP_JSONEXPR_COERCION_FINISH:
+ build_EvalXFunc(b, mod, "ExecEvalJsonCoercionFinish",
+ v_state, op);
+
+ LLVMBuildBr(b, opblocks[opno + 1]);
+ break;
+
case EEOP_AGGREF:
{
LLVMValueRef v_aggno;
diff --git a/src/backend/jit/llvm/llvmjit_types.c b/src/backend/jit/llvm/llvmjit_types.c
index 47c9daf402..edd1e1679b 100644
--- a/src/backend/jit/llvm/llvmjit_types.c
+++ b/src/backend/jit/llvm/llvmjit_types.c
@@ -172,6 +172,9 @@ void *referenced_functions[] =
ExecEvalXmlExpr,
ExecEvalJsonConstructor,
ExecEvalJsonIsPredicate,
+ ExecEvalJsonCoercion,
+ ExecEvalJsonCoercionFinish,
+ ExecEvalJsonExprPath,
MakeExpandedObjectReadOnlyInternal,
slot_getmissingattrs,
slot_getsomeattrs_int,
diff --git a/src/backend/nodes/makefuncs.c b/src/backend/nodes/makefuncs.c
index a02332a1ec..09a05a0373 100644
--- a/src/backend/nodes/makefuncs.c
+++ b/src/backend/nodes/makefuncs.c
@@ -857,6 +857,24 @@ makeJsonValueExpr(Expr *raw_expr, Expr *formatted_expr,
return jve;
}
+/*
+ * makeJsonBehavior -
+ * creates a JsonBehavior node
+ */
+JsonBehavior *
+makeJsonBehavior(JsonBehaviorType type, Node *expr, JsonCoercion *coercion,
+ int location)
+{
+ JsonBehavior *behavior = makeNode(JsonBehavior);
+
+ behavior->btype = type;
+ behavior->expr = expr;
+ behavior->coercion = coercion;
+ behavior->location = location;
+
+ return behavior;
+}
+
/*
* makeJsonKeyValue -
* creates a JsonKeyValue node
diff --git a/src/backend/nodes/nodeFuncs.c b/src/backend/nodes/nodeFuncs.c
index e1a5bc7e95..4a3d96b298 100644
--- a/src/backend/nodes/nodeFuncs.c
+++ b/src/backend/nodes/nodeFuncs.c
@@ -234,6 +234,33 @@ exprType(const Node *expr)
case T_JsonIsPredicate:
type = BOOLOID;
break;
+ case T_JsonExpr:
+ {
+ const JsonExpr *jexpr = (const JsonExpr *) expr;
+
+ type = jexpr->returning->typid;
+ break;
+ }
+ case T_JsonCoercion:
+ {
+ const JsonCoercion *coercion = (const JsonCoercion *) expr;
+
+ type = coercion->targettype;
+ break;
+ }
+ case T_JsonItemCoercion:
+ type = exprType(((JsonItemCoercion *) expr)->coercion);
+ break;
+ case T_JsonBehavior:
+ {
+ const JsonBehavior *behavior = (const JsonBehavior *) expr;
+
+ if (behavior->coercion)
+ type = exprType((Node *) behavior->coercion);
+ else
+ type = exprType(behavior->expr);
+ break;
+ }
case T_NullTest:
type = BOOLOID;
break;
@@ -491,8 +518,32 @@ exprTypmod(const Node *expr)
return ((const SQLValueFunction *) expr)->typmod;
case T_JsonValueExpr:
return exprTypmod((Node *) ((const JsonValueExpr *) expr)->formatted_expr);
- case T_JsonConstructorExpr:
- return ((const JsonConstructorExpr *) expr)->returning->typmod;
+ case T_JsonExpr:
+ {
+ const JsonExpr *jexpr = (const JsonExpr *) expr;
+
+ return jexpr->returning->typmod;
+ }
+ break;
+ case T_JsonCoercion:
+ {
+ const JsonCoercion *coercion = (const JsonCoercion *) expr;
+
+ return coercion->targettypmod;
+ }
+ break;
+ case T_JsonItemCoercion:
+ return exprTypmod(((JsonItemCoercion *) expr)->coercion);
+ case T_JsonBehavior:
+ {
+ const JsonBehavior *behavior = (const JsonBehavior *) expr;
+
+ if (behavior->coercion)
+ return exprTypmod((Node *) behavior->coercion);
+ else
+ return exprTypmod(behavior->expr);
+ }
+ break;
case T_CoerceToDomain:
return ((const CoerceToDomain *) expr)->resulttypmod;
case T_CoerceToDomainValue:
@@ -969,6 +1020,27 @@ exprCollation(const Node *expr)
/* IS JSON's result is boolean ... */
coll = InvalidOid; /* ... so it has no collation */
break;
+ case T_JsonExpr:
+ coll = exprCollation(((JsonExpr *) expr)->result_coercion);
+ break;
+ case T_JsonCoercion:
+ coll = ((const JsonCoercion *) expr)->collation;
+ break;
+ case T_JsonItemCoercion:
+ coll = exprCollation(((JsonItemCoercion *) expr)->coercion);
+ break;
+ case T_JsonBehavior:
+ {
+ JsonBehavior *behavior = (JsonBehavior *) expr;
+
+ if (behavior->coercion)
+ coll = exprCollation((Node *) behavior->coercion);
+ else if (behavior->expr)
+ coll = exprCollation(behavior->expr);
+ else
+ coll = InvalidOid;
+ }
+ break;
case T_NullTest:
/* NullTest's result is boolean ... */
coll = InvalidOid; /* ... so it has no collation */
@@ -1205,6 +1277,44 @@ exprSetCollation(Node *expr, Oid collation)
case T_JsonIsPredicate:
Assert(!OidIsValid(collation)); /* result is always boolean */
break;
+ case T_JsonExpr:
+ {
+ JsonExpr *jexpr = (JsonExpr *) expr;
+
+ if (jexpr->result_coercion)
+ exprSetCollation((Node *) jexpr->result_coercion, collation);
+ else
+ Assert(!OidIsValid(collation)); /* result is always a
+ * json[b] type */
+ }
+ break;
+ case T_JsonItemCoercion:
+ {
+ JsonItemCoercion *item_coercion = (JsonItemCoercion *) expr;
+
+ if (item_coercion->coercion)
+ exprSetCollation(item_coercion->coercion, collation);
+ }
+ break;
+ case T_JsonCoercion:
+ {
+ JsonCoercion *coercion = (JsonCoercion *) expr;
+
+ if (coercion->cast_expr)
+ exprSetCollation(coercion->cast_expr, collation);
+ coercion->collation = collation;
+ }
+ break;
+ case T_JsonBehavior:
+ {
+ JsonBehavior *behavior = (JsonBehavior *) expr;
+
+ if (behavior->expr)
+ exprSetCollation(behavior->expr, collation);
+ if (behavior->coercion)
+ exprSetCollation((Node *) behavior->coercion, collation);
+ }
+ break;
case T_NullTest:
/* NullTest's result is boolean ... */
Assert(!OidIsValid(collation)); /* ... so never set a collation */
@@ -1508,6 +1618,18 @@ exprLocation(const Node *expr)
case T_JsonIsPredicate:
loc = ((const JsonIsPredicate *) expr)->location;
break;
+ case T_JsonExpr:
+ {
+ const JsonExpr *jsexpr = (const JsonExpr *) expr;
+
+ /* consider both function name and leftmost arg */
+ loc = leftmostLoc(jsexpr->location,
+ exprLocation(jsexpr->formatted_expr));
+ }
+ break;
+ case T_JsonBehavior:
+ loc = exprLocation(((JsonBehavior *) expr)->expr);
+ break;
case T_NullTest:
{
const NullTest *nexpr = (const NullTest *) expr;
@@ -2260,6 +2382,51 @@ expression_tree_walker_impl(Node *node,
break;
case T_JsonIsPredicate:
return WALK(((JsonIsPredicate *) node)->expr);
+ case T_JsonExpr:
+ {
+ JsonExpr *jexpr = (JsonExpr *) node;
+
+ if (WALK(jexpr->formatted_expr))
+ return true;
+ if (WALK(jexpr->result_coercion))
+ return true;
+ if (WALK(jexpr->item_coercions))
+ return true;
+ if (WALK(jexpr->passing_values))
+ return true;
+ /* we assume walker doesn't care about passing_names */
+ if (WALK(jexpr->on_empty))
+ return true;
+ if (WALK(jexpr->on_error))
+ return true;
+ }
+ break;
+ case T_JsonCoercion:
+ {
+ JsonCoercion *coercion = (JsonCoercion *) node;
+
+ if (WALK(coercion->cast_expr))
+ return true;
+ }
+ break;
+ case T_JsonItemCoercion:
+ {
+ JsonItemCoercion *item_coercion = (JsonItemCoercion *) node;
+
+ if (WALK(item_coercion->coercion))
+ return true;
+ }
+ break;
+ case T_JsonBehavior:
+ {
+ JsonBehavior *behavior = (JsonBehavior *) node;
+
+ if (WALK(behavior->expr))
+ return true;
+ if (WALK(behavior->coercion))
+ return true;
+ }
+ break;
case T_NullTest:
return WALK(((NullTest *) node)->arg);
case T_BooleanTest:
@@ -3263,6 +3430,53 @@ expression_tree_mutator_impl(Node *node,
return (Node *) newnode;
}
+ case T_JsonExpr:
+ {
+ JsonExpr *jexpr = (JsonExpr *) node;
+ JsonExpr *newnode;
+
+ FLATCOPY(newnode, jexpr, JsonExpr);
+ MUTATE(newnode->path_spec, jexpr->path_spec, Node *);
+ MUTATE(newnode->formatted_expr, jexpr->formatted_expr, Node *);
+ MUTATE(newnode->result_coercion, jexpr->result_coercion, Node *);
+ MUTATE(newnode->item_coercions, jexpr->item_coercions, List *);
+ MUTATE(newnode->passing_values, jexpr->passing_values, List *);
+ /* assume mutator does not care about passing_names */
+ MUTATE(newnode->on_empty, jexpr->on_empty, JsonBehavior *);
+ MUTATE(newnode->on_error, jexpr->on_error, JsonBehavior *);
+ return (Node *) newnode;
+ }
+ break;
+ case T_JsonCoercion:
+ {
+ JsonCoercion *coercion = (JsonCoercion *) node;
+ JsonCoercion *newnode;
+
+ FLATCOPY(newnode, coercion, JsonCoercion);
+ MUTATE(newnode->cast_expr, coercion->cast_expr, Node *);
+ return (Node *) newnode;
+ }
+ case T_JsonItemCoercion:
+ {
+ JsonItemCoercion *item_coercion = (JsonItemCoercion *) node;
+ JsonItemCoercion *newnode;
+
+ FLATCOPY(newnode, item_coercion, JsonItemCoercion);
+ MUTATE(newnode->coercion, item_coercion->coercion, Node *);
+ return (Node *) newnode;
+ }
+ break;
+ case T_JsonBehavior:
+ {
+ JsonBehavior *behavior = (JsonBehavior *) node;
+ JsonBehavior *newnode;
+
+ FLATCOPY(newnode, behavior, JsonBehavior);
+ MUTATE(newnode->expr, behavior->expr, Node *);
+ MUTATE(newnode->coercion, behavior->coercion, JsonCoercion *);
+ return (Node *) newnode;
+ }
+ break;
case T_NullTest:
{
NullTest *ntest = (NullTest *) node;
@@ -3951,6 +4165,36 @@ raw_expression_tree_walker_impl(Node *node,
break;
case T_JsonIsPredicate:
return WALK(((JsonIsPredicate *) node)->expr);
+ case T_JsonArgument:
+ return WALK(((JsonArgument *) node)->val);
+ case T_JsonFuncExpr:
+ {
+ JsonFuncExpr *jfe = (JsonFuncExpr *) node;
+
+ if (WALK(jfe->context_item))
+ return true;
+ if (WALK(jfe->pathspec))
+ return true;
+ if (WALK(jfe->passing))
+ return true;
+ if (jfe->output && WALK(jfe->output))
+ return true;
+ if (jfe->on_empty)
+ return true;
+ if (jfe->on_error)
+ return true;
+ }
+ break;
+ case T_JsonBehavior:
+ {
+ JsonBehavior *jb = (JsonBehavior *) node;
+
+ if (WALK(jb->expr))
+ return true;
+ if (WALK(jb->coercion))
+ return true;
+ }
+ break;
case T_NullTest:
return WALK(((NullTest *) node)->arg);
case T_BooleanTest:
diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c
index 8b76e98529..4cd606ca73 100644
--- a/src/backend/optimizer/path/costsize.c
+++ b/src/backend/optimizer/path/costsize.c
@@ -4879,7 +4879,8 @@ cost_qual_eval_walker(Node *node, cost_qual_eval_context *context)
IsA(node, SQLValueFunction) ||
IsA(node, XmlExpr) ||
IsA(node, CoerceToDomain) ||
- IsA(node, NextValueExpr))
+ IsA(node, NextValueExpr) ||
+ IsA(node, JsonExpr))
{
/* Treat all these as having cost 1 */
context->total.per_tuple += cpu_operator_cost;
diff --git a/src/backend/optimizer/util/clauses.c b/src/backend/optimizer/util/clauses.c
index edc25d712e..bedf1f597c 100644
--- a/src/backend/optimizer/util/clauses.c
+++ b/src/backend/optimizer/util/clauses.c
@@ -53,6 +53,7 @@
#include "utils/fmgroids.h"
#include "utils/json.h"
#include "utils/jsonb.h"
+#include "utils/jsonpath.h"
#include "utils/lsyscache.h"
#include "utils/memutils.h"
#include "utils/syscache.h"
@@ -417,6 +418,25 @@ contain_mutable_functions_walker(Node *node, void *context)
/* Check all subnodes */
}
+ if (IsA(node, JsonExpr))
+ {
+ JsonExpr *jexpr = castNode(JsonExpr, node);
+ Const *cnst;
+
+ if (!IsA(jexpr->path_spec, Const))
+ return true;
+
+ cnst = castNode(Const, jexpr->path_spec);
+
+ Assert(cnst->consttype == JSONPATHOID);
+ if (cnst->constisnull)
+ return false;
+
+ if (jspIsMutable(DatumGetJsonPathP(cnst->constvalue),
+ jexpr->passing_names, jexpr->passing_values))
+ return true;
+ }
+
if (IsA(node, SQLValueFunction))
{
/* all variants of SQLValueFunction are stable */
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 130f7fc7c3..e900edfb8a 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -652,10 +652,19 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
json_returning_clause_opt
json_name_and_value
json_aggregate_func
+ json_argument
+ json_behavior
+ json_on_error_clause_opt
%type <list> json_name_and_value_list
json_value_expr_list
json_array_aggregate_order_by_clause_opt
-%type <ival> json_predicate_type_constraint
+ json_arguments
+ json_behavior_clause_opt
+ json_passing_clause_opt
+%type <ival> json_behavior_type
+ json_predicate_type_constraint
+ json_quotes_clause_opt
+ json_wrapper_behavior
%type <boolean> json_key_uniqueness_constraint_opt
json_object_constructor_null_clause_opt
json_array_constructor_null_clause_opt
@@ -696,7 +705,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
CACHE CALL CALLED CASCADE CASCADED CASE CAST CATALOG_P CHAIN CHAR_P
CHARACTER CHARACTERISTICS CHECK CHECKPOINT CLASS CLOSE
CLUSTER COALESCE COLLATE COLLATION COLUMN COLUMNS COMMENT COMMENTS COMMIT
- COMMITTED COMPRESSION CONCURRENTLY CONFIGURATION CONFLICT
+ COMMITTED COMPRESSION CONCURRENTLY CONDITIONAL CONFIGURATION CONFLICT
CONNECTION CONSTRAINT CONSTRAINTS CONTENT_P CONTINUE_P CONVERSION_P COPY
COST CREATE CROSS CSV CUBE CURRENT_P
CURRENT_CATALOG CURRENT_DATE CURRENT_ROLE CURRENT_SCHEMA
@@ -707,8 +716,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
DETACH DICTIONARY DISABLE_P DISCARD DISTINCT DO DOCUMENT_P DOMAIN_P
DOUBLE_P DROP
- EACH ELSE ENABLE_P ENCODING ENCRYPTED END_P ENUM_P ESCAPE EVENT EXCEPT
- EXCLUDE EXCLUDING EXCLUSIVE EXECUTE EXISTS EXPLAIN EXPRESSION
+ EACH ELSE EMPTY_P ENABLE_P ENCODING ENCRYPTED END_P ENUM_P ERROR_P ESCAPE
+ EVENT EXCEPT EXCLUDE EXCLUDING EXCLUSIVE EXECUTE EXISTS EXPLAIN EXPRESSION
EXTENSION EXTERNAL EXTRACT
FALSE_P FAMILY FETCH FILTER FINALIZE FIRST_P FLOAT_P FOLLOWING FOR
@@ -723,10 +732,10 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
INNER_P INOUT INPUT_P INSENSITIVE INSERT INSTEAD INT_P INTEGER
INTERSECT INTERVAL INTO INVOKER IS ISNULL ISOLATION
- JOIN JSON JSON_ARRAY JSON_ARRAYAGG JSON_OBJECT JSON_OBJECTAGG
- JSON_SCALAR JSON_SERIALIZE
+ JOIN JSON JSON_ARRAY JSON_ARRAYAGG JSON_EXISTS JSON_OBJECT JSON_OBJECTAGG
+ JSON_QUERY JSON_SCALAR JSON_SERIALIZE JSON_VALUE
- KEY KEYS
+ KEEP KEY KEYS
LABEL LANGUAGE LARGE_P LAST_P LATERAL_P
LEADING LEAKPROOF LEAST LEFT LEVEL LIKE LIMIT LISTEN LOAD LOCAL
@@ -740,7 +749,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
NOT NOTHING NOTIFY NOTNULL NOWAIT NULL_P NULLIF
NULLS_P NUMERIC
- OBJECT_P OF OFF OFFSET OIDS OLD ON ONLY OPERATOR OPTION OPTIONS OR
+ OBJECT_P OF OFF OFFSET OIDS OLD OMIT ON ONLY OPERATOR OPTION OPTIONS OR
ORDER ORDINALITY OTHERS OUT_P OUTER_P
OVER OVERLAPS OVERLAY OVERRIDING OWNED OWNER
@@ -749,7 +758,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
POSITION PRECEDING PRECISION PRESERVE PREPARE PREPARED PRIMARY
PRIOR PRIVILEGES PROCEDURAL PROCEDURE PROCEDURES PROGRAM PUBLICATION
- QUOTE
+ QUOTE QUOTES
RANGE READ REAL REASSIGN RECHECK RECURSIVE REF_P REFERENCES REFERENCING
REFRESH REINDEX RELATIVE_P RELEASE RENAME REPEATABLE REPLACE REPLICA
@@ -760,7 +769,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
SEQUENCE SEQUENCES
SERIALIZABLE SERVER SESSION SESSION_USER SET SETS SETOF SHARE SHOW
SIMILAR SIMPLE SKIP SMALLINT SNAPSHOT SOME SQL_P STABLE STANDALONE_P
- START STATEMENT STATISTICS STDIN STDOUT STORAGE STORED STRICT_P STRIP_P
+ START STATEMENT STATISTICS STDIN STDOUT STORAGE STORED STRICT_P STRING_P STRIP_P
SUBSCRIPTION SUBSTRING SUPPORT SYMMETRIC SYSID SYSTEM_P SYSTEM_USER
TABLE TABLES TABLESAMPLE TABLESPACE TEMP TEMPLATE TEMPORARY TEXT_P THEN
@@ -768,7 +777,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query);
TREAT TRIGGER TRIM TRUE_P
TRUNCATE TRUSTED TYPE_P TYPES_P
- UESCAPE UNBOUNDED UNCOMMITTED UNENCRYPTED UNION UNIQUE UNKNOWN
+ UESCAPE UNBOUNDED UNCONDITIONAL UNCOMMITTED UNENCRYPTED UNION UNIQUE UNKNOWN
UNLISTEN UNLOGGED UNTIL UPDATE USER USING
VACUUM VALID VALIDATE VALIDATOR VALUE_P VALUES VARCHAR VARIADIC VARYING
@@ -15789,6 +15798,62 @@ func_expr_common_subexpr:
n->location = @1;
$$ = (Node *) n;
}
+ | JSON_QUERY '('
+ json_value_expr ',' a_expr json_passing_clause_opt
+ json_returning_clause_opt
+ json_wrapper_behavior
+ json_quotes_clause_opt
+ json_behavior_clause_opt
+ ')'
+ {
+ JsonFuncExpr *n = makeNode(JsonFuncExpr);
+
+ n->op = JSON_QUERY_OP;
+ n->context_item = (JsonValueExpr *) $3;
+ n->pathspec = $5;
+ n->passing = $6;
+ n->output = (JsonOutput *) $7;
+ n->wrapper = $8;
+ n->quotes = $9;
+ n->on_empty = (JsonBehavior *) linitial($10);
+ n->on_error = (JsonBehavior *) lsecond($10);
+ n->location = @1;
+ $$ = (Node *) n;
+ }
+ | JSON_EXISTS '('
+ json_value_expr ',' a_expr json_passing_clause_opt
+ json_on_error_clause_opt
+ ')'
+ {
+ JsonFuncExpr *n = makeNode(JsonFuncExpr);
+
+ n->op = JSON_EXISTS_OP;
+ n->context_item = (JsonValueExpr *) $3;
+ n->pathspec = $5;
+ n->passing = $6;
+ n->output = NULL;
+ n->on_error = (JsonBehavior *) $7;
+ n->location = @1;
+ $$ = (Node *) n;
+ }
+ | JSON_VALUE '('
+ json_value_expr ',' a_expr json_passing_clause_opt
+ json_returning_clause_opt
+ json_behavior_clause_opt
+ ')'
+ {
+ JsonFuncExpr *n = makeNode(JsonFuncExpr);
+
+ n->op = JSON_VALUE_OP;
+ n->context_item = (JsonValueExpr *) $3;
+ n->pathspec = $5;
+ n->passing = $6;
+ n->output = (JsonOutput *) $7;
+ n->on_empty = (JsonBehavior *) linitial($8);
+ n->on_error = (JsonBehavior *) lsecond($8);
+ n->location = @1;
+ $$ = (Node *) n;
+ }
;
@@ -16515,6 +16580,77 @@ opt_asymmetric: ASYMMETRIC
;
/* SQL/JSON support */
+json_passing_clause_opt:
+ PASSING json_arguments { $$ = $2; }
+ | /*EMPTY*/ { $$ = NIL; }
+ ;
+
+json_arguments:
+ json_argument { $$ = list_make1($1); }
+ | json_arguments ',' json_argument { $$ = lappend($1, $3); }
+ ;
+
+json_argument:
+ json_value_expr AS ColLabel
+ {
+ JsonArgument *n = makeNode(JsonArgument);
+
+ n->val = (JsonValueExpr *) $1;
+ n->name = $3;
+ $$ = (Node *) n;
+ }
+ ;
+
+/* ARRAY is a noise word */
+json_wrapper_behavior:
+ WITHOUT WRAPPER { $$ = JSW_NONE; }
+ | WITHOUT ARRAY WRAPPER { $$ = JSW_NONE; }
+ | WITH WRAPPER { $$ = JSW_UNCONDITIONAL; }
+ | WITH ARRAY WRAPPER { $$ = JSW_UNCONDITIONAL; }
+ | WITH CONDITIONAL ARRAY WRAPPER { $$ = JSW_CONDITIONAL; }
+ | WITH UNCONDITIONAL ARRAY WRAPPER { $$ = JSW_UNCONDITIONAL; }
+ | WITH CONDITIONAL WRAPPER { $$ = JSW_CONDITIONAL; }
+ | WITH UNCONDITIONAL WRAPPER { $$ = JSW_UNCONDITIONAL; }
+ | /* empty */ { $$ = JSW_UNSPEC; }
+ ;
+
+json_behavior:
+ DEFAULT a_expr
+ { $$ = (Node *) makeJsonBehavior(JSON_BEHAVIOR_DEFAULT, $2, NULL, @1); }
+ | json_behavior_type
+ { $$ = (Node *) makeJsonBehavior($1, NULL, NULL, @1); }
+ ;
+
+json_behavior_type:
+ ERROR_P { $$ = JSON_BEHAVIOR_ERROR; }
+ | NULL_P { $$ = JSON_BEHAVIOR_NULL; }
+ | TRUE_P { $$ = JSON_BEHAVIOR_TRUE; }
+ | FALSE_P { $$ = JSON_BEHAVIOR_FALSE; }
+ | UNKNOWN { $$ = JSON_BEHAVIOR_UNKNOWN; }
+ | EMPTY_P ARRAY { $$ = JSON_BEHAVIOR_EMPTY_ARRAY; }
+ | EMPTY_P OBJECT_P { $$ = JSON_BEHAVIOR_EMPTY_OBJECT; }
+ /* non-standard, for Oracle compatibility only */
+ | EMPTY_P { $$ = JSON_BEHAVIOR_EMPTY_ARRAY; }
+ ;
+
+json_behavior_clause_opt:
+ json_behavior ON EMPTY_P
+ { $$ = list_make2($1, NULL); }
+ | json_behavior ON ERROR_P
+ { $$ = list_make2(NULL, $1); }
+ | json_behavior ON EMPTY_P json_behavior ON ERROR_P
+ { $$ = list_make2($1, $4); }
+ | /* EMPTY */
+ { $$ = list_make2(NULL, NULL); }
+ ;
+
+json_on_error_clause_opt:
+ json_behavior ON ERROR_P
+ { $$ = $1; }
+ | /* EMPTY */
+ { $$ = NULL; }
+ ;
+
json_value_expr:
a_expr json_format_clause_opt
{
@@ -16559,6 +16695,14 @@ json_format_clause_opt:
}
;
+json_quotes_clause_opt:
+ KEEP QUOTES ON SCALAR STRING_P { $$ = JS_QUOTES_KEEP; }
+ | KEEP QUOTES { $$ = JS_QUOTES_KEEP; }
+ | OMIT QUOTES ON SCALAR STRING_P { $$ = JS_QUOTES_OMIT; }
+ | OMIT QUOTES { $$ = JS_QUOTES_OMIT; }
+ | /* EMPTY */ { $$ = JS_QUOTES_UNSPEC; }
+ ;
+
json_returning_clause_opt:
RETURNING Typename json_format_clause_opt
{
@@ -17175,6 +17319,7 @@ unreserved_keyword:
| COMMIT
| COMMITTED
| COMPRESSION
+ | CONDITIONAL
| CONFIGURATION
| CONFLICT
| CONNECTION
@@ -17211,10 +17356,12 @@ unreserved_keyword:
| DOUBLE_P
| DROP
| EACH
+ | EMPTY_P
| ENABLE_P
| ENCODING
| ENCRYPTED
| ENUM_P
+ | ERROR_P
| ESCAPE
| EVENT
| EXCLUDE
@@ -17264,6 +17411,7 @@ unreserved_keyword:
| INSTEAD
| INVOKER
| ISOLATION
+ | KEEP
| KEY
| KEYS
| LABEL
@@ -17310,6 +17458,7 @@ unreserved_keyword:
| OFF
| OIDS
| OLD
+ | OMIT
| OPERATOR
| OPTION
| OPTIONS
@@ -17340,6 +17489,7 @@ unreserved_keyword:
| PROGRAM
| PUBLICATION
| QUOTE
+ | QUOTES
| RANGE
| READ
| REASSIGN
@@ -17399,6 +17549,7 @@ unreserved_keyword:
| STORAGE
| STORED
| STRICT_P
+ | STRING_P
| STRIP_P
| SUBSCRIPTION
| SUPPORT
@@ -17421,6 +17572,7 @@ unreserved_keyword:
| UESCAPE
| UNBOUNDED
| UNCOMMITTED
+ | UNCONDITIONAL
| UNENCRYPTED
| UNKNOWN
| UNLISTEN
@@ -17481,10 +17633,13 @@ col_name_keyword:
| JSON
| JSON_ARRAY
| JSON_ARRAYAGG
+ | JSON_EXISTS
| JSON_OBJECT
| JSON_OBJECTAGG
+ | JSON_QUERY
| JSON_SCALAR
| JSON_SERIALIZE
+ | JSON_VALUE
| LEAST
| NATIONAL
| NCHAR
@@ -17717,6 +17872,7 @@ bare_label_keyword:
| COMMITTED
| COMPRESSION
| CONCURRENTLY
+ | CONDITIONAL
| CONFIGURATION
| CONFLICT
| CONNECTION
@@ -17769,11 +17925,13 @@ bare_label_keyword:
| DROP
| EACH
| ELSE
+ | EMPTY_P
| ENABLE_P
| ENCODING
| ENCRYPTED
| END_P
| ENUM_P
+ | ERROR_P
| ESCAPE
| EVENT
| EXCLUDE
@@ -17843,10 +18001,14 @@ bare_label_keyword:
| JSON
| JSON_ARRAY
| JSON_ARRAYAGG
+ | JSON_EXISTS
| JSON_OBJECT
| JSON_OBJECTAGG
+ | JSON_QUERY
| JSON_SCALAR
| JSON_SERIALIZE
+ | JSON_VALUE
+ | KEEP
| KEY
| KEYS
| LABEL
@@ -17907,6 +18069,7 @@ bare_label_keyword:
| OFF
| OIDS
| OLD
+ | OMIT
| ONLY
| OPERATOR
| OPTION
@@ -17944,6 +18107,7 @@ bare_label_keyword:
| PROGRAM
| PUBLICATION
| QUOTE
+ | QUOTES
| RANGE
| READ
| REAL
@@ -18012,6 +18176,7 @@ bare_label_keyword:
| STORAGE
| STORED
| STRICT_P
+ | STRING_P
| STRIP_P
| SUBSCRIPTION
| SUBSTRING
@@ -18046,6 +18211,7 @@ bare_label_keyword:
| UESCAPE
| UNBOUNDED
| UNCOMMITTED
+ | UNCONDITIONAL
| UNENCRYPTED
| UNIQUE
| UNKNOWN
diff --git a/src/backend/parser/parse_expr.c b/src/backend/parser/parse_expr.c
index 9300c7b9ab..53426fac53 100644
--- a/src/backend/parser/parse_expr.c
+++ b/src/backend/parser/parse_expr.c
@@ -37,6 +37,7 @@
#include "utils/builtins.h"
#include "utils/date.h"
#include "utils/fmgroids.h"
+#include "utils/jsonb.h"
#include "utils/lsyscache.h"
#include "utils/timestamp.h"
#include "utils/xml.h"
@@ -90,6 +91,23 @@ static Node *transformJsonParseExpr(ParseState *pstate, JsonParseExpr *expr);
static Node *transformJsonScalarExpr(ParseState *pstate, JsonScalarExpr *expr);
static Node *transformJsonSerializeExpr(ParseState *pstate,
JsonSerializeExpr *expr);
+static Node *transformJsonFuncExpr(ParseState *pstate, JsonFuncExpr *p);
+static JsonExpr *transformJsonExprCommon(ParseState *pstate, JsonFuncExpr *func,
+ const char *constructName);
+static void transformJsonPassingArgs(ParseState *pstate, const char *constructName,
+ JsonFormatType format, List *args,
+ List **passing_values, List **passing_names);
+static Node *coerceJsonFuncExprOutput(ParseState *pstate, JsonExpr *jsexpr);
+static Oid JsonFuncExprDefaultReturnType(JsonExpr *jsexpr);
+static Node *coerceJsonExpr(ParseState *pstate, Node *expr,
+ const JsonReturning *returning, bool omit_quotes);
+static JsonCoercion *makeJsonCoercion(const JsonReturning *returning,
+ bool omit_quotes, Node *cast_expr);
+static List *InitJsonItemCoercions(ParseState *pstate, const JsonReturning *returning,
+ Oid contextItemTypeId);
+static JsonBehavior *transformJsonBehavior(ParseState *pstate, JsonBehavior *behavior,
+ JsonBehaviorType default_behavior,
+ JsonReturning *returning);
static Node *make_row_comparison_op(ParseState *pstate, List *opname,
List *largs, List *rargs, int location);
static Node *make_row_distinct_op(ParseState *pstate, List *opname,
@@ -353,6 +371,10 @@ transformExprRecurse(ParseState *pstate, Node *expr)
result = transformJsonSerializeExpr(pstate, (JsonSerializeExpr *) expr);
break;
+ case T_JsonFuncExpr:
+ result = transformJsonFuncExpr(pstate, (JsonFuncExpr *) expr);
+ break;
+
default:
/* should not reach here */
elog(ERROR, "unrecognized node type: %d", (int) nodeTag(expr));
@@ -3229,7 +3251,7 @@ makeJsonByteaToTextConversion(Node *expr, JsonFormat *format, int location)
static Node *
transformJsonValueExpr(ParseState *pstate, const char *constructName,
JsonValueExpr *ve, JsonFormatType default_format,
- Oid targettype)
+ Oid targettype, bool isarg)
{
Node *expr = transformExprRecurse(pstate, (Node *) ve->raw_expr);
Node *rawexpr;
@@ -3261,6 +3283,41 @@ transformJsonValueExpr(ParseState *pstate, const char *constructName,
else
format = ve->format->format_type;
}
+ else if (isarg)
+ {
+ /*
+ * Special treatment for PASSING arguments.
+ *
+ * Pass types supported by GetJsonPathVar() / JsonItemFromDatum()
+ * directly without converting to json[b].
+ */
+ switch (exprtype)
+ {
+ case BOOLOID:
+ case NUMERICOID:
+ case INT2OID:
+ case INT4OID:
+ case INT8OID:
+ case FLOAT4OID:
+ case FLOAT8OID:
+ case TEXTOID:
+ case VARCHAROID:
+ case DATEOID:
+ case TIMEOID:
+ case TIMETZOID:
+ case TIMESTAMPOID:
+ case TIMESTAMPTZOID:
+ return expr;
+
+ default:
+ if (typcategory == TYPCATEGORY_STRING)
+ return expr;
+ /* else convert argument to json[b] type */
+ break;
+ }
+
+ format = default_format;
+ }
else if (exprtype == JSONOID || exprtype == JSONBOID)
format = JS_FORMAT_DEFAULT; /* do not format json[b] types */
else
@@ -3272,7 +3329,12 @@ transformJsonValueExpr(ParseState *pstate, const char *constructName,
Node *coerced;
bool only_allow_cast = OidIsValid(targettype);
- if (!only_allow_cast &&
+ /*
+ * PASSING args are handled appropriately by GetJsonPathVar() /
+ * JsonItemFromDatum().
+ */
+ if (!isarg &&
+ !only_allow_cast &&
exprtype != BYTEAOID && typcategory != TYPCATEGORY_STRING)
ereport(ERROR,
errcode(ERRCODE_DATATYPE_MISMATCH),
@@ -3425,6 +3487,11 @@ transformJsonOutput(ParseState *pstate, const JsonOutput *output,
errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("returning SETOF types is not supported in SQL/JSON functions"));
+ if (get_typtype(ret->typid) == TYPTYPE_PSEUDO)
+ ereport(ERROR,
+ errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("returning pseudo-types is not supported in SQL/JSON functions"));
+
if (ret->format->format_type == JS_FORMAT_DEFAULT)
/* assign JSONB format when returning jsonb, or JSON format otherwise */
ret->format->format_type =
@@ -3521,7 +3588,6 @@ coerceJsonFuncExpr(ParseState *pstate, Node *expr,
/* try to coerce expression to the output type */
res = coerce_to_target_type(pstate, expr, exprtype,
returning->typid, returning->typmod,
- /* XXX throwing errors when casting to char(N) */
COERCION_EXPLICIT,
COERCE_EXPLICIT_CAST,
location);
@@ -3621,7 +3687,7 @@ transformJsonObjectConstructor(ParseState *pstate, JsonObjectConstructor *ctor)
Node *val = transformJsonValueExpr(pstate, "JSON_OBJECT()",
kv->value,
JS_FORMAT_DEFAULT,
- InvalidOid);
+ InvalidOid, false);
args = lappend(args, key);
args = lappend(args, val);
@@ -3808,7 +3874,7 @@ transformJsonObjectAgg(ParseState *pstate, JsonObjectAgg *agg)
val = transformJsonValueExpr(pstate, "JSON_OBJECTAGG()",
agg->arg->value,
JS_FORMAT_DEFAULT,
- InvalidOid);
+ InvalidOid, false);
args = list_make2(key, val);
returning = transformJsonConstructorOutput(pstate, agg->constructor->output,
@@ -3864,9 +3930,8 @@ transformJsonArrayAgg(ParseState *pstate, JsonArrayAgg *agg)
Oid aggfnoid;
Oid aggtype;
- arg = transformJsonValueExpr(pstate, "JSON_ARRAYAGG()",
- agg->arg,
- JS_FORMAT_DEFAULT, InvalidOid);
+ arg = transformJsonValueExpr(pstate, "JSON_ARRAYAGG()", agg->arg,
+ JS_FORMAT_DEFAULT, InvalidOid, false);
returning = transformJsonConstructorOutput(pstate, agg->constructor->output,
list_make1(arg));
@@ -3913,9 +3978,8 @@ transformJsonArrayConstructor(ParseState *pstate, JsonArrayConstructor *ctor)
{
JsonValueExpr *jsval = castNode(JsonValueExpr, lfirst(lc));
Node *val = transformJsonValueExpr(pstate, "JSON_ARRAY()",
- jsval,
- JS_FORMAT_DEFAULT,
- InvalidOid);
+ jsval, JS_FORMAT_DEFAULT,
+ InvalidOid, false);
args = lappend(args, val);
}
@@ -4074,7 +4138,7 @@ transformJsonParseExpr(ParseState *pstate, JsonParseExpr *jsexpr)
* function-like CASTs.
*/
arg = transformJsonValueExpr(pstate, "JSON()", jsexpr->expr,
- JS_FORMAT_JSON, returning->typid);
+ JS_FORMAT_JSON, returning->typid, false);
}
return makeJsonConstructorExpr(pstate, JSCTOR_JSON_PARSE, list_make1(arg), NULL,
@@ -4119,7 +4183,7 @@ transformJsonSerializeExpr(ParseState *pstate, JsonSerializeExpr *expr)
Node *arg = transformJsonValueExpr(pstate, "JSON_SERIALIZE()",
expr->expr,
JS_FORMAT_JSON,
- InvalidOid);
+ InvalidOid, false);
if (expr->output)
{
@@ -4153,3 +4217,582 @@ transformJsonSerializeExpr(ParseState *pstate, JsonSerializeExpr *expr)
return makeJsonConstructorExpr(pstate, JSCTOR_JSON_SERIALIZE, list_make1(arg),
NULL, returning, false, false, expr->location);
}
+
+/*
+ * Transform JSON_VALUE, JSON_QUERY, JSON_EXISTS functions into a JsonExpr node.
+ */
+static Node *
+transformJsonFuncExpr(ParseState *pstate, JsonFuncExpr *func)
+{
+ JsonExpr *jsexpr = NULL;
+ const char *func_name = NULL;
+
+ switch (func->op)
+ {
+ case JSON_EXISTS_OP:
+ func_name = "JSON_EXISTS";
+ break;
+ case JSON_QUERY_OP:
+ func_name = "JSON_QUERY";
+ break;
+ case JSON_VALUE_OP:
+ func_name = "JSON_VALUE";
+ break;
+ default:
+ elog(ERROR, "invalid JsonFuncExpr op");
+ break;
+ }
+
+ /*
+ * FORMAT JSON specification is meaningless except for JSON_QUERY(),
+ * though the syntax allows it. Flag if not JSON_QUERY().
+ */
+ if (func->output && func->op != JSON_QUERY_OP)
+ {
+ JsonFormat *format = func->output->returning->format;
+
+ if (format->format_type != JS_FORMAT_DEFAULT ||
+ format->encoding != JS_ENC_DEFAULT)
+ ereport(ERROR,
+ errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("cannot specify FORMAT in RETURNING clause of %s()",
+ func_name),
+ parser_errposition(pstate, format->location));
+ }
+
+ /* OMIT QUOTES meaningless when strings are wrapped. */
+ if (func->op == JSON_QUERY_OP &&
+ func->quotes != JS_QUOTES_UNSPEC &&
+ (func->wrapper == JSW_CONDITIONAL ||
+ func->wrapper == JSW_UNCONDITIONAL))
+ ereport(ERROR,
+ errcode(ERRCODE_SYNTAX_ERROR),
+ errmsg("SQL/JSON QUOTES behavior must not be specified when WITH WRAPPER is used"),
+ parser_errposition(pstate, func->location));
+
+ jsexpr = transformJsonExprCommon(pstate, func, func_name);
+
+ switch (func->op)
+ {
+ case JSON_EXISTS_OP:
+ /* JSON_EXISTS returns boolean by default. */
+ if (!OidIsValid(jsexpr->returning->typid))
+ {
+ jsexpr->returning->typid = BOOLOID;
+ jsexpr->returning->typmod = -1;
+ }
+
+ jsexpr->on_error = transformJsonBehavior(pstate, func->on_error,
+ JSON_BEHAVIOR_FALSE,
+ jsexpr->returning);
+ break;
+
+ case JSON_QUERY_OP:
+ jsexpr->wrapper = func->wrapper;
+
+ /*
+ * Keep quotes on scalar strings by default, omitting them only if
+ * OMIT QUOTES is specified.
+ */
+ jsexpr->omit_quotes = (func->quotes == JS_QUOTES_OMIT);
+
+ /* JSON_QUERY returns json(b) by default. */
+ if (!OidIsValid(jsexpr->returning->typid))
+ {
+ JsonReturning *ret = jsexpr->returning;
+
+ ret->typid = JsonFuncExprDefaultReturnType(jsexpr);
+ ret->typmod = -1;
+ }
+
+ jsexpr->result_coercion = coerceJsonFuncExprOutput(pstate, jsexpr);
+
+ if (func->on_empty)
+ jsexpr->on_empty = transformJsonBehavior(pstate,
+ func->on_empty,
+ JSON_BEHAVIOR_NULL,
+ jsexpr->returning);
+ jsexpr->on_error = transformJsonBehavior(pstate, func->on_error,
+ JSON_BEHAVIOR_NULL,
+ jsexpr->returning);
+ break;
+
+ case JSON_VALUE_OP:
+ /* Always omit quotes from scalar strings. */
+ jsexpr->omit_quotes = (func->quotes == JS_QUOTES_OMIT);
+
+ /* JSON_VALUE returns text by default. */
+ if (!OidIsValid(jsexpr->returning->typid))
+ {
+ jsexpr->returning->typid = TEXTOID;
+ jsexpr->returning->typmod = -1;
+ }
+
+ /*
+ * Override whatever transformJsonOutput() set these to, which
+ * assumes that output type to be json(b).
+ */
+ jsexpr->returning->format->format_type = JS_FORMAT_DEFAULT;
+ jsexpr->returning->format->encoding = JS_ENC_DEFAULT;
+
+ jsexpr->result_coercion = coerceJsonFuncExprOutput(pstate, jsexpr);
+
+ /*
+ * Initialize expressions to coerce the scalar value returned by
+ * JsonPathValue() to the "returning" type.
+ */
+ if (jsexpr->result_coercion)
+ jsexpr->item_coercions =
+ InitJsonItemCoercions(pstate, jsexpr->returning,
+ exprType(jsexpr->formatted_expr));
+
+ if (func->on_empty)
+ jsexpr->on_empty = transformJsonBehavior(pstate,
+ func->on_empty,
+ JSON_BEHAVIOR_NULL,
+ jsexpr->returning);
+ jsexpr->on_error = transformJsonBehavior(pstate, func->on_error,
+ JSON_BEHAVIOR_NULL,
+ jsexpr->returning);
+ break;
+
+ default:
+ elog(ERROR, "invalid JsonFuncExpr op");
+ break;
+ }
+
+ return (Node *) jsexpr;
+}
+
+/*
+ * Common code for JSON_VALUE, JSON_QUERY, JSON_EXISTS transformation
+ * into a JsonExpr node.
+ */
+static JsonExpr *
+transformJsonExprCommon(ParseState *pstate, JsonFuncExpr *func,
+ const char *constructName)
+{
+ JsonExpr *jsexpr = makeNode(JsonExpr);
+ Node *path_spec;
+
+ jsexpr->location = func->location;
+ jsexpr->op = func->op;
+ jsexpr->formatted_expr = transformJsonValueExpr(pstate, constructName,
+ func->context_item,
+ JS_FORMAT_JSON,
+ InvalidOid, false);
+
+ if (exprType(jsexpr->formatted_expr) != JSONBOID)
+ ereport(ERROR,
+ errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+ errmsg("%s() is not yet implemented for the json type",
+ constructName),
+ errhint("Try casting the argument to jsonb"),
+ parser_errposition(pstate, exprLocation(jsexpr->formatted_expr)));
+
+ jsexpr->format = func->context_item->format;
+
+ path_spec = transformExprRecurse(pstate, func->pathspec);
+ jsexpr->path_spec =
+ coerce_to_target_type(pstate, path_spec, exprType(path_spec),
+ JSONPATHOID, -1,
+ COERCION_EXPLICIT, COERCE_IMPLICIT_CAST,
+ exprLocation(path_spec));
+ if (!jsexpr->path_spec)
+ ereport(ERROR,
+ (errcode(ERRCODE_DATATYPE_MISMATCH),
+ errmsg("JSON path expression must be of type %s, not of type %s",
+ "jsonpath", format_type_be(exprType(path_spec))),
+ parser_errposition(pstate, exprLocation(path_spec))));
+
+ /*
+ * Transform and coerce to json[b] passing arguments, whose format is
+ * determined by context item type.
+ */
+ transformJsonPassingArgs(pstate, constructName,
+ exprType(jsexpr->formatted_expr) == JSONBOID ?
+ JS_FORMAT_JSONB : JS_FORMAT_JSON,
+ func->passing,
+ &jsexpr->passing_values,
+ &jsexpr->passing_names);
+
+ jsexpr->returning = transformJsonOutput(pstate, func->output, false);
+
+ return jsexpr;
+}
+
+/*
+ * Transform a JSON PASSING clause.
+ */
+static void
+transformJsonPassingArgs(ParseState *pstate, const char *constructName,
+ JsonFormatType format, List *args,
+ List **passing_values, List **passing_names)
+{
+ ListCell *lc;
+
+ *passing_values = NIL;
+ *passing_names = NIL;
+
+ foreach(lc, args)
+ {
+ JsonArgument *arg = castNode(JsonArgument, lfirst(lc));
+ Node *expr = transformJsonValueExpr(pstate, constructName,
+ arg->val, format,
+ InvalidOid, true);
+
+ *passing_values = lappend(*passing_values, expr);
+ *passing_names = lappend(*passing_names, makeString(arg->name));
+ }
+}
+
+/*
+ * Create an expression to coerce the output of JSON_VALUE() / JSON_QUERY()
+ * to the output type, if needed.
+ */
+static Node *
+coerceJsonFuncExprOutput(ParseState *pstate, JsonExpr *jsexpr)
+{
+ JsonReturning *returning = jsexpr->returning;
+ Node *context_item = jsexpr->formatted_expr;
+ Node *coercion_expr = NULL;
+ int default_typmod;
+ Oid default_typid;
+ bool omit_quotes =
+ jsexpr->op == JSON_QUERY_OP && jsexpr->omit_quotes;
+
+ Assert(returning);
+
+ /*
+ * Cast functions from jsonb to the following types (jsonb_bool() et al)
+ * don't handle errors softly, so force to use json_populate_type() using
+ * a JsonCoercion node so that any errors are handled appropriately.
+ */
+ if (jsexpr->op == JSON_QUERY_OP)
+ {
+ switch (returning->typid)
+ {
+ case BOOLOID:
+ case NUMERICOID:
+ case INT2OID:
+ case INT4OID:
+ case INT8OID:
+ case FLOAT4OID:
+ case FLOAT8OID:
+ return (Node *) makeJsonCoercion(returning, omit_quotes, NULL);
+ default:
+ break;
+ }
+ }
+
+ default_typid = JsonFuncExprDefaultReturnType(jsexpr);
+ default_typmod = -1;
+ if (returning->typid != default_typid ||
+ returning->typmod != default_typmod ||
+ omit_quotes)
+ {
+ /*
+ * We abuse CaseTestExpr here as placeholder to pass the result of
+ * evaluating the JSON_VALUE/QUERY jsonpath expression as input to the
+ * coercion expression.
+ */
+ CaseTestExpr *placeholder = makeNode(CaseTestExpr);
+
+ /*
+ * When OMIT QUOTES is true, ExecEvalJsonCoercion() will convert a
+ * quote-stripped source value to its text representation, so use
+ * TEXTOID as the source type.
+ */
+ placeholder->typeId = omit_quotes ? TEXTOID : exprType(context_item);
+ placeholder->typeMod = omit_quotes ? -1 : exprTypmod(context_item);
+
+ Assert(placeholder->typeId == default_typid ||
+ placeholder->typeId == TEXTOID);
+ Assert(placeholder->typeMod == default_typmod ||
+ placeholder->typeMod == -1);
+
+ coercion_expr = coerceJsonExpr(pstate, (Node *) placeholder,
+ returning, omit_quotes);
+ }
+
+ return coercion_expr;
+}
+
+/* Returns the default type for a given JsonExpr for a given JsonFormat. */
+static Oid
+JsonFuncExprDefaultReturnType(JsonExpr *jsexpr)
+{
+ JsonFormat *format = jsexpr->format;
+ Node *context_item = jsexpr->formatted_expr;
+
+ Assert(format);
+ if (format->format_type == JS_FORMAT_JSONB)
+ return JSONBOID;
+ else if (format->format_type == JS_FORMAT_DEFAULT &&
+ exprType(context_item) == JSONBOID)
+ return JSONBOID;
+
+ return JSONOID;
+}
+
+/*
+ * Returns a JsonCoercion node to coerce a jsonb-valued expression to the
+ * target type given by 'returning' using either json_populate_type() or
+ * by using the target type's input function.
+ */
+static JsonCoercion *
+makeJsonCoercion(const JsonReturning *returning, bool omit_quotes,
+ Node *cast_expr)
+{
+ JsonCoercion *coercion = makeNode(JsonCoercion);
+
+ coercion->targettype = returning->typid;
+ coercion->targettypmod = returning->typmod;
+ coercion->omit_quotes = omit_quotes;
+ coercion->cast_expr = cast_expr;
+
+ return coercion;
+}
+
+/*
+ * Coerce the result of JSON_VALUE / JSON_QUERY () (or a behavior expression)
+ * to the output type
+ *
+ * Returns NULL if no coercion needed (the input expresssion is already of the
+ * desired type) and OMIT QUOTES is false.
+ *
+ * Returns a JsonCoercion node if the cast was not found or if OMIT QUOTES is
+ * true.
+ */
+static Node *
+coerceJsonExpr(ParseState *pstate, Node *expr, const JsonReturning *returning,
+ bool omit_quotes)
+{
+ Node *coerced_expr;
+
+ Assert(expr != NULL);
+ coerced_expr = coerceJsonFuncExpr(pstate, expr, returning, false);
+
+ if (coerced_expr == expr && !omit_quotes)
+ return NULL;
+
+ /* Use coerced_expr for JsonCoercion.cast_expr iff coercion is needed. */
+ if (coerced_expr == NULL || omit_quotes)
+ return (Node *) makeJsonCoercion(returning, omit_quotes,
+ coerced_expr == expr ?
+ NULL : coerced_expr);
+
+ return coerced_expr;
+}
+
+/*
+ * Initialize JsonCoercion nodes for coercing a given JSON item value produced
+ * by JSON_VALUE to the target "returning" type; also see
+ * ExecPrepareJsonItemCoercion().
+ */
+static List *
+InitJsonItemCoercions(ParseState *pstate, const JsonReturning *returning,
+ Oid contextItemTypeId)
+{
+ List *item_coercions = NIL;
+ int i;
+ Oid typeoid;
+ struct
+ {
+ JsonItemType item_type;
+ Oid typeoid;
+ } item_types[] =
+ {
+ {JsonItemTypeNull, UNKNOWNOID},
+ {JsonItemTypeString, TEXTOID},
+ {JsonItemTypeNumeric, NUMERICOID},
+ {JsonItemTypeBoolean, BOOLOID},
+ {JsonItemTypeDate, DATEOID},
+ {JsonItemTypeTime, TIMEOID},
+ {JsonItemTypeTimetz, TIMETZOID},
+ {JsonItemTypeTimestamp, TIMESTAMPOID},
+ {JsonItemTypeTimestamptz, TIMESTAMPTZOID},
+ {JsonItemTypeComposite, contextItemTypeId},
+ {JsonItemTypeInvalid, InvalidOid}
+ };
+
+ for (i = 0; OidIsValid(typeoid = item_types[i].typeoid); i++)
+ {
+ Node *expr;
+ JsonItemCoercion *item_coercion = makeNode(JsonItemCoercion);
+
+ if (typeoid == UNKNOWNOID)
+ {
+ expr = (Node *) makeNullConst(UNKNOWNOID, -1, InvalidOid);
+ }
+ else
+ {
+ CaseTestExpr *placeholder = makeNode(CaseTestExpr);
+
+ /*
+ * We abuse CaseTestExpr here as placeholder to pass the result of
+ * JSON_VALUE jsonpath expression to the coercion function.
+ */
+ placeholder->typeId = item_types[i].typeoid;
+ placeholder->typeMod = -1;
+ placeholder->collation = InvalidOid;
+
+ expr = (Node *) placeholder;
+ }
+
+ item_coercion->item_type = item_types[i].item_type;
+ item_coercion->coercion = coerceJsonExpr(pstate, expr, returning, false);
+ item_coercions = lappend(item_coercions, item_coercion);
+ }
+
+ return item_coercions;
+}
+
+/*
+ * Returns constant values to be returned to the user for various
+ * non-ERROR ON ERROR/EMPTY behaviors.
+ *
+ * Note that JSON_BEHAVIOR_DEFAULT expression is handled by the
+ * caller separately.
+ */
+static Node *
+GetJsonBehaviorConstExpr(JsonBehaviorType btype, int location)
+{
+ Datum val = (Datum) 0;
+ Oid typid = JSONBOID;
+ int len = -1;
+ bool isbyval = false;
+ bool isnull = false;
+ Const *con;
+
+ switch (btype)
+ {
+ case JSON_BEHAVIOR_EMPTY_ARRAY:
+ val = DirectFunctionCall1(jsonb_in, CStringGetDatum("[]"));
+ break;
+
+ case JSON_BEHAVIOR_EMPTY_OBJECT:
+ val = DirectFunctionCall1(jsonb_in, CStringGetDatum("{}"));
+ break;
+
+ case JSON_BEHAVIOR_TRUE:
+ val = BoolGetDatum(true);
+ typid = BOOLOID;
+ len = sizeof(bool);
+ isbyval = true;
+ break;
+
+ case JSON_BEHAVIOR_FALSE:
+ val = BoolGetDatum(false);
+ typid = BOOLOID;
+ len = sizeof(bool);
+ isbyval = true;
+ break;
+
+ case JSON_BEHAVIOR_NULL:
+ case JSON_BEHAVIOR_UNKNOWN:
+ case JSON_BEHAVIOR_EMPTY:
+ val = (Datum) 0;
+ isnull = true;
+ typid = INT4OID;
+ len = sizeof(int32);
+ isbyval = true;
+ break;
+
+ case JSON_BEHAVIOR_DEFAULT:
+ case JSON_BEHAVIOR_ERROR:
+ /* Always handled in the caller. */
+ Assert(false);
+ break;
+
+ default:
+ elog(ERROR, "unrecognized SQL/JSON behavior %d", btype);
+ break;
+ }
+
+ con = makeConst(typid, -1, InvalidOid, len, val, isnull, isbyval);
+ con->location = location;
+
+ return (Node *) con;
+}
+
+/*
+ * Transform a JSON BEHAVIOR clause.
+ */
+static JsonBehavior *
+transformJsonBehavior(ParseState *pstate, JsonBehavior *behavior,
+ JsonBehaviorType default_behavior,
+ JsonReturning *returning)
+{
+ JsonBehaviorType behavior_type = default_behavior;
+ Node *expr = NULL;
+ JsonCoercion *coercion = NULL;
+ int location = -1;
+
+ if (behavior)
+ {
+ behavior_type = behavior->btype;
+ location = behavior->location;
+ if (behavior_type == JSON_BEHAVIOR_DEFAULT)
+ {
+ expr = transformExprRecurse(pstate, behavior->expr);
+ if (!IsA(expr, Const) && !IsA(expr, FuncExpr) &&
+ !IsA(expr, OpExpr))
+ ereport(ERROR,
+ (errcode(ERRCODE_DATATYPE_MISMATCH),
+ errmsg("can only specify constant, non-aggregate"
+ " function, or operator expression for"
+ " DEFAULT"),
+ parser_errposition(pstate, exprLocation(expr))));
+ if (contain_var_clause(expr))
+ ereport(ERROR,
+ (errcode(ERRCODE_DATATYPE_MISMATCH),
+ errmsg("DEFAULT expression must not contain column references"),
+ parser_errposition(pstate, exprLocation(expr))));
+ if (expression_returns_set(expr))
+ ereport(ERROR,
+ (errcode(ERRCODE_DATATYPE_MISMATCH),
+ errmsg("DEFAULT expression must not return a set"),
+ parser_errposition(pstate, exprLocation(expr))));
+ }
+ }
+
+ if (expr == NULL && behavior_type != JSON_BEHAVIOR_ERROR)
+ expr = GetJsonBehaviorConstExpr(behavior_type, location);
+
+ if (expr)
+ {
+ Node *coerced_expr = expr;
+ bool isnull = (IsA(expr, Const) && ((Const *) expr)->constisnull);
+
+ /*
+ * Coerce NULLs and "internal" (that is, not specified by the user)
+ * jsonb-valued expressions with a JsonCoercion node.
+ *
+ * For other (user-specified) non-NULL values, try to find a cast and
+ * error out if one is not found.
+ */
+ if (isnull ||
+ (exprType(expr) == JSONBOID &&
+ behavior_type == default_behavior))
+ coercion = makeJsonCoercion(returning, false, NULL);
+ else
+ coerced_expr =
+ coerce_to_target_type(pstate, expr, exprType(expr),
+ returning->typid, returning->typmod,
+ COERCION_EXPLICIT, COERCE_EXPLICIT_CAST,
+ exprLocation((Node *) behavior));
+
+ if (coerced_expr == NULL)
+ ereport(ERROR,
+ errcode(ERRCODE_CANNOT_COERCE),
+ errmsg("cannot cast behavior expression of type %s to %s",
+ format_type_be(exprType(expr)),
+ format_type_be(returning->typid)),
+ parser_errposition(pstate, exprLocation(expr)));
+ else
+ expr = coerced_expr;
+ }
+
+ return makeJsonBehavior(behavior_type, expr, coercion, location);
+}
diff --git a/src/backend/parser/parse_target.c b/src/backend/parser/parse_target.c
index 0cd904f8da..ea5ac6bafe 100644
--- a/src/backend/parser/parse_target.c
+++ b/src/backend/parser/parse_target.c
@@ -1989,6 +1989,21 @@ FigureColnameInternal(Node *node, char **name)
/* make JSON_ARRAYAGG act like a regular function */
*name = "json_arrayagg";
return 2;
+ case T_JsonFuncExpr:
+ /* make SQL/JSON functions act like a regular function */
+ switch (((JsonFuncExpr *) node)->op)
+ {
+ case JSON_EXISTS_OP:
+ *name = "json_exists";
+ return 2;
+ case JSON_QUERY_OP:
+ *name = "json_query";
+ return 2;
+ case JSON_VALUE_OP:
+ *name = "json_value";
+ return 2;
+ }
+ break;
default:
break;
}
diff --git a/src/backend/utils/adt/formatting.c b/src/backend/utils/adt/formatting.c
index 829aaa8d0e..68386d354a 100644
--- a/src/backend/utils/adt/formatting.c
+++ b/src/backend/utils/adt/formatting.c
@@ -4466,6 +4466,50 @@ parse_datetime(text *date_txt, text *fmt, Oid collid, bool strict,
}
}
+/*
+ * Parses the datetime format string in 'fmt_str' and returns true if it
+ * contains a timezone specifier, false if not.
+ */
+bool
+datetime_format_has_tz(const char *fmt_str)
+{
+ bool incache;
+ int fmt_len = strlen(fmt_str);
+ int result;
+ FormatNode *format;
+
+ if (fmt_len > DCH_CACHE_SIZE)
+ {
+ /*
+ * Allocate new memory if format picture is bigger than static cache
+ * and do not use cache (call parser always)
+ */
+ incache = false;
+
+ format = (FormatNode *) palloc((fmt_len + 1) * sizeof(FormatNode));
+
+ parse_format(format, fmt_str, DCH_keywords,
+ DCH_suff, DCH_index, DCH_FLAG, NULL);
+ }
+ else
+ {
+ /*
+ * Use cache buffers
+ */
+ DCHCacheEntry *ent = DCH_cache_fetch(fmt_str, false);
+
+ incache = true;
+ format = ent->format;
+ }
+
+ result = DCH_datetime_type(format);
+
+ if (!incache)
+ pfree(format);
+
+ return result & DCH_ZONED;
+}
+
/*
* do_to_timestamp: shared code for to_timestamp and to_date
*
diff --git a/src/backend/utils/adt/jsonb.c b/src/backend/utils/adt/jsonb.c
index c10b3fbedf..6d797c0953 100644
--- a/src/backend/utils/adt/jsonb.c
+++ b/src/backend/utils/adt/jsonb.c
@@ -2163,3 +2163,34 @@ jsonb_float8(PG_FUNCTION_ARGS)
PG_RETURN_DATUM(retValue);
}
+
+/*
+ * Convert jsonb to a C-string stripping quotes from scalar strings.
+ */
+char *
+JsonbUnquote(Jsonb *jb)
+{
+ if (JB_ROOT_IS_SCALAR(jb))
+ {
+ JsonbValue v;
+
+ (void) JsonbExtractScalar(&jb->root, &v);
+
+ if (v.type == jbvString)
+ return pnstrdup(v.val.string.val, v.val.string.len);
+ else if (v.type == jbvBool)
+ return pstrdup(v.val.boolean ? "true" : "false");
+ else if (v.type == jbvNumeric)
+ return DatumGetCString(DirectFunctionCall1(numeric_out,
+ PointerGetDatum(v.val.numeric)));
+ else if (v.type == jbvNull)
+ return pstrdup("null");
+ else
+ {
+ elog(ERROR, "unrecognized jsonb value type %d", v.type);
+ return NULL;
+ }
+ }
+ else
+ return JsonbToCString(NULL, &jb->root, VARSIZE(jb));
+}
diff --git a/src/backend/utils/adt/jsonfuncs.c b/src/backend/utils/adt/jsonfuncs.c
index 1b0f494329..54dbd7e79f 100644
--- a/src/backend/utils/adt/jsonfuncs.c
+++ b/src/backend/utils/adt/jsonfuncs.c
@@ -2830,7 +2830,9 @@ populate_array_dim_jsonb(PopulateArrayContext *ctx, /* context */
check_stack_depth();
- if (jbv->type != jbvBinary || !JsonContainerIsArray(jbc))
+ /* Even scalars can end up here thanks to JsonPathQuery/Value(). */
+ if (jbv->type != jbvBinary || !JsonContainerIsArray(jbc) ||
+ JsonContainerIsScalar(jbc))
{
populate_array_report_expected_array(ctx, ndim - 1);
/* Getting here means the error was reported softly. */
@@ -2838,8 +2840,6 @@ populate_array_dim_jsonb(PopulateArrayContext *ctx, /* context */
return false;
}
- Assert(!JsonContainerIsScalar(jbc));
-
it = JsonbIteratorInit(jbc);
tok = JsonbIteratorNext(&it, &val, true);
@@ -3323,6 +3323,62 @@ prepare_column_cache(ColumnIOData *column,
ReleaseSysCache(tup);
}
+/*
+ * Populate and return the value of specified type from a given json/jsonb
+ * value 'json_val'. 'cache' is caller-specified pointer to save the
+ * ColumnIOData that will be initialized on the 1st call and then reused
+ * during any subsequent calls. 'mcxt' gives the memory context to allocate
+ * the ColumnIOData and any other subsidiary memory in. 'escontext',
+ * if not NULL, tells that any errors that occur should be handled softly.
+ */
+Datum
+json_populate_type(Datum json_val, Oid json_type,
+ Oid typid, int32 typmod,
+ void **cache, MemoryContext mcxt,
+ bool *isnull,
+ Node *escontext)
+{
+ JsValue jsv = {0};
+ JsonbValue jbv;
+
+ jsv.is_json = json_type == JSONOID;
+
+ if (*isnull)
+ {
+ if (jsv.is_json)
+ jsv.val.json.str = NULL;
+ else
+ jsv.val.jsonb = NULL;
+ }
+ else if (jsv.is_json)
+ {
+ text *json = DatumGetTextPP(json_val);
+
+ jsv.val.json.str = VARDATA_ANY(json);
+ jsv.val.json.len = VARSIZE_ANY_EXHDR(json);
+ jsv.val.json.type = JSON_TOKEN_INVALID; /* not used in
+ * populate_composite() */
+ }
+ else
+ {
+ Jsonb *jsonb = DatumGetJsonbP(json_val);
+
+ jsv.val.jsonb = &jbv;
+
+ /* fill binary jsonb value pointing to jb */
+ jbv.type = jbvBinary;
+ jbv.val.binary.data = &jsonb->root;
+ jbv.val.binary.len = VARSIZE(jsonb) - VARHDRSZ;
+ }
+
+ if (*cache == NULL)
+ *cache = MemoryContextAllocZero(mcxt, sizeof(ColumnIOData));
+
+ return populate_record_field(*cache, typid, typmod, NULL, mcxt,
+ PointerGetDatum(NULL), &jsv, isnull,
+ escontext);
+}
+
/* recursively populate a record field or an array element from a json/jsonb value */
static Datum
populate_record_field(ColumnIOData *col,
diff --git a/src/backend/utils/adt/jsonpath.c b/src/backend/utils/adt/jsonpath.c
index 258ed8eb11..8988718f12 100644
--- a/src/backend/utils/adt/jsonpath.c
+++ b/src/backend/utils/adt/jsonpath.c
@@ -68,7 +68,9 @@
#include "libpq/pqformat.h"
#include "nodes/miscnodes.h"
#include "miscadmin.h"
+#include "nodes/nodeFuncs.h"
#include "utils/builtins.h"
+#include "utils/formatting.h"
#include "utils/json.h"
#include "utils/jsonpath.h"
@@ -1240,3 +1242,281 @@ jspGetArraySubscript(JsonPathItem *v, JsonPathItem *from, JsonPathItem *to,
return true;
}
+
+/* SQL/JSON datatype status: */
+enum JsonPathDatatypeStatus
+{
+ jpdsNonDateTime, /* null, bool, numeric, string, array, object */
+ jpdsUnknownDateTime, /* unknown datetime type */
+ jpdsDateTimeZoned, /* timetz, timestamptz */
+ jpdsDateTimeNonZoned, /* time, timestamp, date */
+};
+
+/* Context for jspIsMutableWalker() */
+struct JsonPathMutableContext
+{
+ List *varnames; /* list of variable names */
+ List *varexprs; /* list of variable expressions */
+ enum JsonPathDatatypeStatus current; /* status of @ item */
+ bool lax; /* jsonpath is lax or strict */
+ bool mutable; /* resulting mutability status */
+};
+
+static enum JsonPathDatatypeStatus jspIsMutableWalker(JsonPathItem *jpi,
+ struct JsonPathMutableContext *cxt);
+
+/*
+ * Function to check whether jsonpath expression is mutable to be used in the
+ * planner function contain_mutable_functions().
+ */
+bool
+jspIsMutable(JsonPath *path, List *varnames, List *varexprs)
+{
+ struct JsonPathMutableContext cxt;
+ JsonPathItem jpi;
+
+ cxt.varnames = varnames;
+ cxt.varexprs = varexprs;
+ cxt.current = jpdsNonDateTime;
+ cxt.lax = (path->header & JSONPATH_LAX) != 0;
+ cxt.mutable = false;
+
+ jspInit(&jpi, path);
+ (void) jspIsMutableWalker(&jpi, &cxt);
+
+ return cxt.mutable;
+}
+
+/*
+ * Recursive walker for jspIsMutable()
+ */
+static enum JsonPathDatatypeStatus
+jspIsMutableWalker(JsonPathItem *jpi, struct JsonPathMutableContext *cxt)
+{
+ JsonPathItem next;
+ enum JsonPathDatatypeStatus status = jpdsNonDateTime;
+
+ while (!cxt->mutable)
+ {
+ JsonPathItem arg;
+ enum JsonPathDatatypeStatus leftStatus;
+ enum JsonPathDatatypeStatus rightStatus;
+
+ switch (jpi->type)
+ {
+ case jpiRoot:
+ Assert(status == jpdsNonDateTime);
+ break;
+
+ case jpiCurrent:
+ Assert(status == jpdsNonDateTime);
+ status = cxt->current;
+ break;
+
+ case jpiFilter:
+ {
+ enum JsonPathDatatypeStatus prevStatus = cxt->current;
+
+ cxt->current = status;
+ jspGetArg(jpi, &arg);
+ jspIsMutableWalker(&arg, cxt);
+
+ cxt->current = prevStatus;
+ break;
+ }
+
+ case jpiVariable:
+ {
+ int32 len;
+ const char *name = jspGetString(jpi, &len);
+ ListCell *lc1;
+ ListCell *lc2;
+
+ Assert(status == jpdsNonDateTime);
+
+ forboth(lc1, cxt->varnames, lc2, cxt->varexprs)
+ {
+ String *varname = lfirst_node(String, lc1);
+ Node *varexpr = lfirst(lc2);
+
+ if (strncmp(varname->sval, name, len))
+ continue;
+
+ switch (exprType(varexpr))
+ {
+ case DATEOID:
+ case TIMEOID:
+ case TIMESTAMPOID:
+ status = jpdsDateTimeNonZoned;
+ break;
+
+ case TIMETZOID:
+ case TIMESTAMPTZOID:
+ status = jpdsDateTimeZoned;
+ break;
+
+ default:
+ status = jpdsNonDateTime;
+ break;
+ }
+
+ break;
+ }
+ break;
+ }
+
+ case jpiEqual:
+ case jpiNotEqual:
+ case jpiLess:
+ case jpiGreater:
+ case jpiLessOrEqual:
+ case jpiGreaterOrEqual:
+ Assert(status == jpdsNonDateTime);
+ jspGetLeftArg(jpi, &arg);
+ leftStatus = jspIsMutableWalker(&arg, cxt);
+
+ jspGetRightArg(jpi, &arg);
+ rightStatus = jspIsMutableWalker(&arg, cxt);
+
+ /*
+ * Comparison of datetime type with different timezone status
+ * is mutable.
+ */
+ if (leftStatus != jpdsNonDateTime &&
+ rightStatus != jpdsNonDateTime &&
+ (leftStatus == jpdsUnknownDateTime ||
+ rightStatus == jpdsUnknownDateTime ||
+ leftStatus != rightStatus))
+ cxt->mutable = true;
+ break;
+
+ case jpiNot:
+ case jpiIsUnknown:
+ case jpiExists:
+ case jpiPlus:
+ case jpiMinus:
+ Assert(status == jpdsNonDateTime);
+ jspGetArg(jpi, &arg);
+ jspIsMutableWalker(&arg, cxt);
+ break;
+
+ case jpiAnd:
+ case jpiOr:
+ case jpiAdd:
+ case jpiSub:
+ case jpiMul:
+ case jpiDiv:
+ case jpiMod:
+ case jpiStartsWith:
+ Assert(status == jpdsNonDateTime);
+ jspGetLeftArg(jpi, &arg);
+ jspIsMutableWalker(&arg, cxt);
+ jspGetRightArg(jpi, &arg);
+ jspIsMutableWalker(&arg, cxt);
+ break;
+
+ case jpiIndexArray:
+ for (int i = 0; i < jpi->content.array.nelems; i++)
+ {
+ JsonPathItem from;
+ JsonPathItem to;
+
+ if (jspGetArraySubscript(jpi, &from, &to, i))
+ jspIsMutableWalker(&to, cxt);
+
+ jspIsMutableWalker(&from, cxt);
+ }
+ /* FALLTHROUGH */
+
+ case jpiAnyArray:
+ if (!cxt->lax)
+ status = jpdsNonDateTime;
+ break;
+
+ case jpiAny:
+ if (jpi->content.anybounds.first > 0)
+ status = jpdsNonDateTime;
+ break;
+
+ case jpiDatetime:
+ if (jpi->content.arg)
+ {
+ char *template;
+
+ jspGetArg(jpi, &arg);
+ if (arg.type != jpiString)
+ {
+ status = jpdsNonDateTime;
+ break; /* there will be runtime error */
+ }
+
+ template = jspGetString(&arg, NULL);
+ if (datetime_format_has_tz(template))
+ status = jpdsDateTimeZoned;
+ else
+ status = jpdsDateTimeNonZoned;
+ }
+ else
+ {
+ status = jpdsUnknownDateTime;
+ }
+ break;
+
+ case jpiLikeRegex:
+ Assert(status == jpdsNonDateTime);
+ jspInitByBuffer(&arg, jpi->base, jpi->content.like_regex.expr);
+ jspIsMutableWalker(&arg, cxt);
+ break;
+
+ /* literals */
+ case jpiNull:
+ case jpiString:
+ case jpiNumeric:
+ case jpiBool:
+ break;
+ /* accessors */
+ case jpiKey:
+ case jpiAnyKey:
+ /* special items */
+ case jpiSubscript:
+ case jpiLast:
+ /* item methods */
+ case jpiType:
+ case jpiSize:
+ case jpiAbs:
+ case jpiFloor:
+ case jpiCeiling:
+ case jpiDouble:
+ case jpiKeyValue:
+ case jpiBigint:
+ case jpiBoolean:
+ case jpiDecimal:
+ case jpiInteger:
+ case jpiNumber:
+ case jpiStringFunc:
+ status = jpdsNonDateTime;
+ break;
+
+ case jpiTime:
+ case jpiDate:
+ case jpiTimestamp:
+ status = jpdsDateTimeNonZoned;
+ cxt->mutable = true;
+ break;
+
+ case jpiTimeTz:
+ case jpiTimestampTz:
+ status = jpdsDateTimeNonZoned;
+ cxt->mutable = true;
+ break;
+
+ }
+
+ if (!jspGetNext(jpi, &next))
+ break;
+
+ jpi = &next;
+ }
+
+ return status;
+}
diff --git a/src/backend/utils/adt/jsonpath_exec.c b/src/backend/utils/adt/jsonpath_exec.c
index 3f30bc6222..9e8f2bbdbe 100644
--- a/src/backend/utils/adt/jsonpath_exec.c
+++ b/src/backend/utils/adt/jsonpath_exec.c
@@ -234,6 +234,12 @@ static JsonPathExecResult appendBoolResult(JsonPathExecContext *cxt,
JsonPathItem *jsp, JsonValueList *found, JsonPathBool res);
static void getJsonPathItem(JsonPathExecContext *cxt, JsonPathItem *item,
JsonbValue *value);
+static JsonbValue *GetJsonPathVar(void *cxt, char *varName, int varNameLen,
+ JsonbValue *baseObject, int *baseObjectId);
+static int CountJsonPathVars(void *cxt);
+static void JsonItemFromDatum(Datum val, Oid typid, int32 typmod,
+ JsonbValue *res);
+static void JsonbValueInitNumericDatum(JsonbValue *jbv, Datum num);
static void getJsonPathVariable(JsonPathExecContext *cxt,
JsonPathItem *variable, JsonbValue *value);
static int countVariablesFromJsonb(void *varsJsonb);
@@ -2865,6 +2871,155 @@ getJsonPathItem(JsonPathExecContext *cxt, JsonPathItem *item,
}
}
+/*
+ * Returns the computed value of a JSON path variable with given name.
+ */
+static JsonbValue *
+GetJsonPathVar(void *cxt, char *varName, int varNameLen,
+ JsonbValue *baseObject, int *baseObjectId)
+{
+ JsonPathVariable *var = NULL;
+ List *vars = cxt;
+ ListCell *lc;
+ JsonbValue *result;
+ int id = 1;
+
+ foreach(lc, vars)
+ {
+ JsonPathVariable *curvar = lfirst(lc);
+
+ if (!strncmp(curvar->name, varName, varNameLen))
+ {
+ var = curvar;
+ break;
+ }
+
+ id++;
+ }
+
+ if (var == NULL)
+ {
+ *baseObjectId = -1;
+ return NULL;
+ }
+
+ result = palloc(sizeof(JsonbValue));
+ if (var->isnull)
+ {
+ *baseObjectId = 0;
+ result->type = jbvNull;
+ }
+ else
+ JsonItemFromDatum(var->value, var->typid, var->typmod, result);
+
+ *baseObject = *result;
+ *baseObjectId = id;
+
+ return result;
+}
+
+static int
+CountJsonPathVars(void *cxt)
+{
+ List *vars = (List *) cxt;
+
+ return list_length(vars);
+}
+
+
+/*
+ * Initialize JsonbValue to pass to jsonpath executor from given
+ * datum value of the specified type.
+ */
+static void
+JsonItemFromDatum(Datum val, Oid typid, int32 typmod, JsonbValue *res)
+{
+ switch (typid)
+ {
+ case BOOLOID:
+ res->type = jbvBool;
+ res->val.boolean = DatumGetBool(val);
+ break;
+ case NUMERICOID:
+ JsonbValueInitNumericDatum(res, val);
+ break;
+ case INT2OID:
+ JsonbValueInitNumericDatum(res, DirectFunctionCall1(int2_numeric, val));
+ break;
+ case INT4OID:
+ JsonbValueInitNumericDatum(res, DirectFunctionCall1(int4_numeric, val));
+ break;
+ case INT8OID:
+ JsonbValueInitNumericDatum(res, DirectFunctionCall1(int8_numeric, val));
+ break;
+ case FLOAT4OID:
+ JsonbValueInitNumericDatum(res, DirectFunctionCall1(float4_numeric, val));
+ break;
+ case FLOAT8OID:
+ JsonbValueInitNumericDatum(res, DirectFunctionCall1(float8_numeric, val));
+ break;
+ case TEXTOID:
+ case VARCHAROID:
+ res->type = jbvString;
+ res->val.string.val = VARDATA_ANY(val);
+ res->val.string.len = VARSIZE_ANY_EXHDR(val);
+ break;
+ case DATEOID:
+ case TIMEOID:
+ case TIMETZOID:
+ case TIMESTAMPOID:
+ case TIMESTAMPTZOID:
+ res->type = jbvDatetime;
+ res->val.datetime.value = val;
+ res->val.datetime.typid = typid;
+ res->val.datetime.typmod = typmod;
+ res->val.datetime.tz = 0;
+ break;
+ case JSONBOID:
+ {
+ JsonbValue *jbv = res;
+ Jsonb *jb = DatumGetJsonbP(val);
+
+ if (JsonContainerIsScalar(&jb->root))
+ {
+ bool result PG_USED_FOR_ASSERTS_ONLY;
+
+ result = JsonbExtractScalar(&jb->root, jbv);
+ Assert(result);
+ }
+ else
+ JsonbInitBinary(jbv, jb);
+ break;
+ }
+ case JSONOID:
+ {
+ text *txt = DatumGetTextP(val);
+ char *str = text_to_cstring(txt);
+ Jsonb *jb;
+
+ jb = DatumGetJsonbP(DirectFunctionCall1(jsonb_in,
+ CStringGetDatum(str)));
+ pfree(str);
+
+ JsonItemFromDatum(JsonbPGetDatum(jb), JSONBOID, -1, res);
+ break;
+ }
+ default:
+ ereport(ERROR,
+ errcode(ERRCODE_INVALID_PARAMETER_VALUE),
+ errmsg("could not convert value of type %s to jsonpath",
+ format_type_be(typid)));
+ }
+}
+
+/* Initialize numeric value from the given datum */
+static void
+JsonbValueInitNumericDatum(JsonbValue *jbv, Datum num)
+{
+ jbv->type = jbvNumeric;
+ jbv->val.numeric = DatumGetNumeric(num);
+}
+
/*
* Get the value of variable passed to jsonpath executor
*/
@@ -3601,3 +3756,170 @@ compareDatetime(Datum val1, Oid typid1, Datum val2, Oid typid2,
return DatumGetInt32(DirectFunctionCall2(cmpfunc, val1, val2));
}
+
+/*
+ * Executor-callable JSON_EXISTS implementation
+ *
+ * Returns NULL instead of throwing errors if 'error' is not NULL, setting
+ * *error to true.
+ */
+bool
+JsonPathExists(Datum jb, JsonPath *jp, bool *error, List *vars)
+{
+ JsonPathExecResult res;
+
+ res = executeJsonPath(jp, vars,
+ GetJsonPathVar, CountJsonPathVars,
+ DatumGetJsonbP(jb), !error, NULL, true);
+
+ Assert(error || !jperIsError(res));
+
+ if (error && jperIsError(res))
+ *error = true;
+
+ return res == jperOk;
+}
+
+/*
+ * Executor-callable JSON_QUERY implementation
+ *
+ * Returns NULL instead of throwing errors if 'error' is not NULL, setting
+ * *error to true. *empty is set to true if no match is found.
+ */
+Datum
+JsonPathQuery(Datum jb, JsonPath *jp, JsonWrapper wrapper, bool *empty,
+ bool *error, List *vars)
+{
+ JsonbValue *singleton;
+ bool wrap;
+ JsonValueList found = {0};
+ JsonPathExecResult res;
+ int count;
+
+ res = executeJsonPath(jp, vars,
+ GetJsonPathVar, CountJsonPathVars,
+ DatumGetJsonbP(jb), !error, &found, true);
+ Assert(error || !jperIsError(res));
+ if (error && jperIsError(res))
+ {
+ *error = true;
+ *empty = false;
+ return (Datum) 0;
+ }
+
+ /* WRAP or not? */
+ count = JsonValueListLength(&found);
+ singleton = count > 0 ? JsonValueListHead(&found) : NULL;
+ if (singleton == NULL)
+ wrap = false;
+ else if (wrapper == JSW_NONE || wrapper == JSW_UNSPEC)
+ wrap = false;
+ else if (wrapper == JSW_UNCONDITIONAL)
+ wrap = true;
+ else if (wrapper == JSW_CONDITIONAL)
+ wrap = count > 1 ||
+ IsAJsonbScalar(singleton) ||
+ (singleton->type == jbvBinary &&
+ JsonContainerIsScalar(singleton->val.binary.data));
+ else
+ {
+ elog(ERROR, "unrecognized json wrapper %d", wrapper);
+ wrap = false;
+ }
+
+ if (wrap)
+ return JsonbPGetDatum(JsonbValueToJsonb(wrapItemsInArray(&found)));
+
+ /* No wrapping means only one item is expected. */
+ if (count > 1)
+ {
+ if (error)
+ {
+ *error = true;
+ return (Datum) 0;
+ }
+
+ ereport(ERROR,
+ (errcode(ERRCODE_MORE_THAN_ONE_SQL_JSON_ITEM),
+ errmsg("JSON path expression in JSON_QUERY should return singleton item without wrapper"),
+ errhint("Use WITH WRAPPER clause to wrap SQL/JSON item sequence into array.")));
+ }
+
+ if (singleton)
+ return JsonbPGetDatum(JsonbValueToJsonb(singleton));
+
+ *empty = true;
+ return PointerGetDatum(NULL);
+}
+
+/*
+ * Executor-callable JSON_VALUE implementation
+ *
+ * Returns NULL instead of throwing errors if 'error' is not NULL, setting
+ * *error to true. *empty is set to true if no match is found.
+ */
+JsonbValue *
+JsonPathValue(Datum jb, JsonPath *jp, bool *empty, bool *error, List *vars)
+{
+ JsonbValue *res;
+ JsonValueList found = {0};
+ JsonPathExecResult jper PG_USED_FOR_ASSERTS_ONLY;
+ int count;
+
+ jper = executeJsonPath(jp, vars, GetJsonPathVar, CountJsonPathVars,
+ DatumGetJsonbP(jb),
+ !error, &found, true);
+
+ Assert(error || !jperIsError(jper));
+
+ if (error && jperIsError(jper))
+ {
+ *error = true;
+ *empty = false;
+ return NULL;
+ }
+
+ count = JsonValueListLength(&found);
+
+ *empty = (count == 0);
+
+ if (*empty)
+ return NULL;
+
+ /* JSON_VALUE expects to get only singletons. */
+ if (count > 1)
+ {
+ if (error)
+ {
+ *error = true;
+ return NULL;
+ }
+
+ ereport(ERROR,
+ (errcode(ERRCODE_MORE_THAN_ONE_SQL_JSON_ITEM),
+ errmsg("JSON path expression in JSON_VALUE should return singleton scalar item")));
+ }
+
+ res = JsonValueListHead(&found);
+ if (res->type == jbvBinary && JsonContainerIsScalar(res->val.binary.data))
+ JsonbExtractScalar(res->val.binary.data, res);
+
+ /* JSON_VALUE expects to get only scalars. */
+ if (!IsAJsonbScalar(res))
+ {
+ if (error)
+ {
+ *error = true;
+ return NULL;
+ }
+
+ ereport(ERROR,
+ (errcode(ERRCODE_SQL_JSON_SCALAR_REQUIRED),
+ errmsg("JSON path expression in JSON_VALUE should return singleton scalar item")));
+ }
+
+ if (res->type == jbvNull)
+ return NULL;
+
+ return res;
+}
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index a928a8c55d..865656cba2 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -475,6 +475,8 @@ static void get_const_expr(Const *constval, deparse_context *context,
int showtype);
static void get_const_collation(Const *constval, deparse_context *context);
static void get_json_format(JsonFormat *format, StringInfo buf);
+static void get_json_returning(JsonReturning *returning, StringInfo buf,
+ bool json_format_by_default);
static void get_json_constructor(JsonConstructorExpr *ctor,
deparse_context *context, bool showimplicit);
static void get_json_constructor_options(JsonConstructorExpr *ctor,
@@ -517,6 +519,8 @@ static char *generate_qualified_type_name(Oid typid);
static text *string_to_text(char *str);
static char *flatten_reloptions(Oid relid);
static void get_reloptions(StringInfo buf, Datum reloptions);
+static void get_json_path_spec(Node *path_spec, deparse_context *context,
+ bool showimplicit);
#define only_marker(rte) ((rte)->inh ? "" : "ONLY ")
@@ -8300,6 +8304,7 @@ isSimpleNode(Node *node, Node *parentNode, int prettyFlags)
case T_WindowFunc:
case T_FuncExpr:
case T_JsonConstructorExpr:
+ case T_JsonExpr:
/* function-like: name(..) or name[..] */
return true;
@@ -8471,6 +8476,7 @@ isSimpleNode(Node *node, Node *parentNode, int prettyFlags)
case T_GroupingFunc: /* own parentheses */
case T_WindowFunc: /* own parentheses */
case T_CaseExpr: /* other separators */
+ case T_JsonExpr: /* own parentheses */
return true;
default:
return false;
@@ -8586,6 +8592,64 @@ get_rule_expr_paren(Node *node, deparse_context *context,
appendStringInfoChar(context->buf, ')');
}
+static void
+get_json_behavior(JsonBehavior *behavior, deparse_context *context,
+ const char *on)
+{
+ /*
+ * The order of array elements must correspond to the order of
+ * JsonBehaviorType members.
+ */
+ const char *behavior_names[] =
+ {
+ " NULL",
+ " ERROR",
+ " EMPTY",
+ " TRUE",
+ " FALSE",
+ " UNKNOWN",
+ " EMPTY ARRAY",
+ " EMPTY OBJECT",
+ " DEFAULT "
+ };
+
+ if ((int) behavior->btype < 0 || behavior->btype >= lengthof(behavior_names))
+ elog(ERROR, "invalid json behavior type: %d", behavior->btype);
+
+ appendStringInfoString(context->buf, behavior_names[behavior->btype]);
+
+ if (behavior->btype == JSON_BEHAVIOR_DEFAULT)
+ get_rule_expr(behavior->expr, context, false);
+
+ appendStringInfo(context->buf, " ON %s", on);
+}
+
+/*
+ * get_json_expr_options
+ *
+ * Parse back common options for JSON_QUERY, JSON_VALUE, JSON_EXISTS.
+ */
+static void
+get_json_expr_options(JsonExpr *jsexpr, deparse_context *context,
+ JsonBehaviorType default_behavior)
+{
+ if (jsexpr->op == JSON_QUERY_OP)
+ {
+ if (jsexpr->wrapper == JSW_CONDITIONAL)
+ appendStringInfo(context->buf, " WITH CONDITIONAL WRAPPER");
+ else if (jsexpr->wrapper == JSW_UNCONDITIONAL)
+ appendStringInfo(context->buf, " WITH UNCONDITIONAL WRAPPER");
+
+ if (jsexpr->omit_quotes)
+ appendStringInfo(context->buf, " OMIT QUOTES");
+ }
+
+ if (jsexpr->on_empty && jsexpr->on_empty->btype != default_behavior)
+ get_json_behavior(jsexpr->on_empty, context, "EMPTY");
+
+ if (jsexpr->on_error && jsexpr->on_error->btype != default_behavior)
+ get_json_behavior(jsexpr->on_error, context, "ERROR");
+}
/* ----------
* get_rule_expr - Parse back an expression
@@ -9745,6 +9809,7 @@ get_rule_expr(Node *node, deparse_context *context,
}
break;
+
case T_JsonValueExpr:
{
JsonValueExpr *jve = (JsonValueExpr *) node;
@@ -9794,6 +9859,64 @@ get_rule_expr(Node *node, deparse_context *context,
}
break;
+ case T_JsonExpr:
+ {
+ JsonExpr *jexpr = (JsonExpr *) node;
+
+ switch (jexpr->op)
+ {
+ case JSON_EXISTS_OP:
+ appendStringInfoString(buf, "JSON_EXISTS(");
+ break;
+ case JSON_QUERY_OP:
+ appendStringInfoString(buf, "JSON_QUERY(");
+ break;
+ case JSON_VALUE_OP:
+ appendStringInfoString(buf, "JSON_VALUE(");
+ break;
+ }
+
+ get_rule_expr(jexpr->formatted_expr, context, showimplicit);
+
+ appendStringInfoString(buf, ", ");
+
+ get_json_path_spec(jexpr->path_spec, context, showimplicit);
+
+ if (jexpr->passing_values)
+ {
+ ListCell *lc1,
+ *lc2;
+ bool needcomma = false;
+
+ appendStringInfoString(buf, " PASSING ");
+
+ forboth(lc1, jexpr->passing_names,
+ lc2, jexpr->passing_values)
+ {
+ if (needcomma)
+ appendStringInfoString(buf, ", ");
+ needcomma = true;
+
+ get_rule_expr((Node *) lfirst(lc2), context, showimplicit);
+ appendStringInfo(buf, " AS %s",
+ ((String *) lfirst_node(String, lc1))->sval);
+ }
+ }
+
+ if (jexpr->op != JSON_EXISTS_OP ||
+ jexpr->returning->typid != BOOLOID)
+ get_json_returning(jexpr->returning, context->buf,
+ jexpr->op == JSON_QUERY_OP);
+
+ get_json_expr_options(jexpr, context,
+ jexpr->op != JSON_EXISTS_OP ?
+ JSON_BEHAVIOR_NULL :
+ JSON_BEHAVIOR_FALSE);
+
+ appendStringInfoString(buf, ")");
+ }
+ break;
+
case T_List:
{
char *sep;
@@ -9917,6 +10040,7 @@ looks_like_function(Node *node)
case T_MinMaxExpr:
case T_SQLValueFunction:
case T_XmlExpr:
+ case T_JsonExpr:
/* these are all accepted by func_expr_common_subexpr */
return true;
default:
@@ -10786,6 +10910,18 @@ get_const_collation(Const *constval, deparse_context *context)
}
}
+/*
+ * get_json_path_spec - Parse back a JSON path specification
+ */
+static void
+get_json_path_spec(Node *path_spec, deparse_context *context, bool showimplicit)
+{
+ if (IsA(path_spec, Const))
+ get_const_expr((Const *) path_spec, context, -1);
+ else
+ get_rule_expr(path_spec, context, showimplicit);
+}
+
/*
* get_json_format - Parse back a JsonFormat node
*/
diff --git a/src/include/executor/execExpr.h b/src/include/executor/execExpr.h
index a28ddcdd77..2bac87700b 100644
--- a/src/include/executor/execExpr.h
+++ b/src/include/executor/execExpr.h
@@ -240,6 +240,9 @@ typedef enum ExprEvalOp
EEOP_XMLEXPR,
EEOP_JSON_CONSTRUCTOR,
EEOP_IS_JSON,
+ EEOP_JSONEXPR_PATH,
+ EEOP_JSONEXPR_COERCION,
+ EEOP_JSONEXPR_COERCION_FINISH,
EEOP_AGGREF,
EEOP_GROUPING_FUNC,
EEOP_WINDOW_FUNC,
@@ -692,6 +695,21 @@ typedef struct ExprEvalStep
JsonIsPredicate *pred; /* original expression node */
} is_json;
+ /* for EEOP_JSONEXPR_PATH */
+ struct
+ {
+ struct JsonExprState *jsestate;
+ } jsonexpr;
+
+ /* for EEOP_JSONEXPR_COERCION */
+ struct
+ {
+ JsonCoercion *coercion;
+ FmgrInfo *input_finfo;
+ Oid typioparam;
+ void *json_populate_type_cache;
+ ErrorSaveContext *escontext;
+ } jsonexpr_coercion;
} d;
} ExprEvalStep;
@@ -755,7 +773,6 @@ typedef struct JsonConstructorExprState
int nargs;
} JsonConstructorExprState;
-
/* functions in execExpr.c */
extern void ExprEvalPushStep(ExprState *es, const ExprEvalStep *s);
@@ -809,6 +826,11 @@ extern void ExecEvalXmlExpr(ExprState *state, ExprEvalStep *op);
extern void ExecEvalJsonConstructor(ExprState *state, ExprEvalStep *op,
ExprContext *econtext);
extern void ExecEvalJsonIsPredicate(ExprState *state, ExprEvalStep *op);
+extern void ExecEvalJsonCoercion(ExprState *state, ExprEvalStep *op,
+ ExprContext *econtext);
+extern void ExecEvalJsonCoercionFinish(ExprState *state, ExprEvalStep *op);
+extern int ExecEvalJsonExprPath(ExprState *state, ExprEvalStep *op,
+ ExprContext *econtext);
extern void ExecEvalGroupingFunc(ExprState *state, ExprEvalStep *op);
extern void ExecEvalSubPlan(ExprState *state, ExprEvalStep *op,
ExprContext *econtext);
diff --git a/src/include/nodes/execnodes.h b/src/include/nodes/execnodes.h
index 444a5f0fd5..1961d9e0aa 100644
--- a/src/include/nodes/execnodes.h
+++ b/src/include/nodes/execnodes.h
@@ -1008,6 +1008,93 @@ typedef struct DomainConstraintState
ExprState *check_exprstate; /* check_expr's eval state, or NULL */
} DomainConstraintState;
+/*
+ * Information about the state of JsonPath* evaluation.
+ */
+typedef struct JsonExprPostEvalState
+{
+ /* Did JsonPath* evaluation cause an error? */
+ NullableDatum error;
+
+ /* Is the result of JsonPath* evaluation empty? */
+ NullableDatum empty;
+
+ /*
+ * ExecEvalJsonExprPath() will set this to the address of the step to use
+ * to coerce the result of JsonPath* evaluation to the RETURNING type.
+ * Also see the description of possible step addresses that this could be
+ * set to in the definition of JsonExprState.
+ */
+ int jump_eval_coercion;
+} JsonExprPostEvalState;
+
+/* State for evaluating a JsonExpr, too big to inline */
+typedef struct JsonExprState
+{
+ /* original expression node */
+ JsonExpr *jsexpr;
+
+ /* value/isnull for formatted_expr */
+ NullableDatum formatted_expr;
+
+ /* value/isnull for pathspec */
+ NullableDatum pathspec;
+
+ /* JsonPathVariable entries for passing_values */
+ List *args;
+
+ /*
+ * Per-row result status info populated by ExecEvalJsonExprPath() and
+ * ExecEvalJsonCoercionFinish().
+ */
+ JsonExprPostEvalState post_eval;
+
+ /*
+ * Addresses of the steps that implements the non-ERROR variant of ON
+ * EMPTY and ON ERROR behaviors, respectively.
+ */
+ int jump_empty;
+ int jump_error;
+
+ /*
+ * Addresses of steps to perform the coercion of the JsonPath* result
+ * value to the RETURNING type. Each address points to either 1) a
+ * special EEOP_JSONEXPR_COERCION step that handles coercion using the
+ * RETURNING type's input function or by using json_via_populate(), or 2)
+ * an expression such as CoerceViaIO. It may be -1 if no coercion is
+ * necessary.
+ *
+ * jump_eval_result_coercion points to the step to evaluate the coercion
+ * given in JsonExpr.result_coercion.
+ */
+ int jump_eval_result_coercion;
+
+ /* Jump to end to skip all the steps after EEOP_JSONEXPR_PATH. */
+ int jump_end;
+
+ /*
+ * eval_item_coercion_jumps is an array of num_item_coercions elements
+ * each containing a step address to evaluate the coercion from a value of
+ * the given JsonItemType to the RETURNING type, or -1 if no coercion is
+ * necessary. item_coercion_via_expr is an array of boolean flags of the
+ * same length that indicates whether each valid step address in the
+ * eval_item_coercion_jumps array points to an expression or a
+ * EEOP_JSONEXPR_COERCION step. ExecEvalJsonExprPath() will cause an
+ * error if it's the latter, because that mode of coercion is not
+ * supported for all JsonItemTypes.
+ */
+ int num_item_coercions;
+ int *eval_item_coercion_jumps;
+ bool *item_coercion_via_expr;
+
+ /*
+ * For passing when initializing a EEOP_IOCOERCE_SAFE step for any
+ * CoerceViaIO nodes in the expression that must be evaluated in an
+ * error-safe manner.
+ */
+ ErrorSaveContext escontext;
+} JsonExprState;
+
/* ----------------------------------------------------------------
* Executor State Trees
diff --git a/src/include/nodes/makefuncs.h b/src/include/nodes/makefuncs.h
index 2dc79648d2..91d95fc52b 100644
--- a/src/include/nodes/makefuncs.h
+++ b/src/include/nodes/makefuncs.h
@@ -112,6 +112,8 @@ extern JsonFormat *makeJsonFormat(JsonFormatType type, JsonEncoding encoding,
int location);
extern JsonValueExpr *makeJsonValueExpr(Expr *raw_expr, Expr *formatted_expr,
JsonFormat *format);
+extern JsonBehavior *makeJsonBehavior(JsonBehaviorType type, Node *expr,
+ JsonCoercion *coercion, int location);
extern Node *makeJsonKeyValue(Node *key, Node *value);
extern Node *makeJsonIsPredicate(Node *expr, JsonFormat *format,
JsonValueType item_type, bool unique_keys,
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index d60e148ff2..7cee3bec49 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -1700,6 +1700,12 @@ typedef struct TriggerTransition
/* Nodes for SQL/JSON support */
+/*
+ * JsonPathSpec -
+ * representation of JSON path constant
+ */
+typedef char *JsonPathSpec;
+
/*
* JsonOutput -
* representation of JSON output clause (RETURNING type [FORMAT format])
@@ -1711,6 +1717,47 @@ typedef struct JsonOutput
JsonReturning *returning; /* RETURNING FORMAT clause and type Oids */
} JsonOutput;
+/*
+ * JsonArgument -
+ * representation of argument from JSON PASSING clause
+ */
+typedef struct JsonArgument
+{
+ NodeTag type;
+ JsonValueExpr *val; /* argument value expression */
+ char *name; /* argument name */
+} JsonArgument;
+
+/*
+ * JsonQuotes -
+ * representation of [KEEP|OMIT] QUOTES clause for JSON_QUERY()
+ */
+typedef enum JsonQuotes
+{
+ JS_QUOTES_UNSPEC, /* unspecified */
+ JS_QUOTES_KEEP, /* KEEP QUOTES */
+ JS_QUOTES_OMIT, /* OMIT QUOTES */
+} JsonQuotes;
+
+/*
+ * JsonFuncExpr -
+ * untransformed representation of JSON function expressions
+ */
+typedef struct JsonFuncExpr
+{
+ NodeTag type;
+ JsonExprOp op; /* expression type */
+ JsonValueExpr *context_item; /* context item expression */
+ Node *pathspec; /* JSON path specification expression */
+ List *passing; /* list of PASSING clause arguments, if any */
+ JsonOutput *output; /* output clause, if specified */
+ JsonBehavior *on_empty; /* ON EMPTY behavior */
+ JsonBehavior *on_error; /* ON ERROR behavior */
+ JsonWrapper wrapper; /* array wrapper behavior (JSON_QUERY only) */
+ JsonQuotes quotes; /* omit or keep quotes? (JSON_QUERY only) */
+ int location; /* token location, or -1 if unknown */
+} JsonFuncExpr;
+
/*
* JsonKeyValue -
* untransformed representation of JSON object key-value pair for
diff --git a/src/include/nodes/primnodes.h b/src/include/nodes/primnodes.h
index 4a154606d2..fad2dd9092 100644
--- a/src/include/nodes/primnodes.h
+++ b/src/include/nodes/primnodes.h
@@ -1552,6 +1552,17 @@ typedef struct XmlExpr
int location;
} XmlExpr;
+/*
+ * JsonExprOp -
+ * enumeration of JSON functions using JSON path
+ */
+typedef enum JsonExprOp
+{
+ JSON_VALUE_OP, /* JSON_VALUE() */
+ JSON_QUERY_OP, /* JSON_QUERY() */
+ JSON_EXISTS_OP, /* JSON_EXISTS() */
+} JsonExprOp;
+
/*
* JsonEncoding -
* representation of JSON ENCODING clause
@@ -1670,6 +1681,175 @@ typedef struct JsonIsPredicate
int location; /* token location, or -1 if unknown */
} JsonIsPredicate;
+/* Nodes used in SQL/JSON query functions */
+
+/*
+ * JsonWrapper -
+ * representation of WRAPPER clause for JSON_QUERY()
+ */
+typedef enum JsonWrapper
+{
+ JSW_UNSPEC,
+ JSW_NONE,
+ JSW_CONDITIONAL,
+ JSW_UNCONDITIONAL,
+} JsonWrapper;
+
+/*
+ * JsonBehaviorType -
+ * enumeration of behavior types used in SQL/JSON ON ERROR/EMPTY clauses
+ *
+ * If enum members are reordered, get_json_behavior() from ruleutils.c
+ * must be updated accordingly.
+ */
+typedef enum JsonBehaviorType
+{
+ JSON_BEHAVIOR_NULL = 0,
+ JSON_BEHAVIOR_ERROR,
+ JSON_BEHAVIOR_EMPTY,
+ JSON_BEHAVIOR_TRUE,
+ JSON_BEHAVIOR_FALSE,
+ JSON_BEHAVIOR_UNKNOWN,
+ JSON_BEHAVIOR_EMPTY_ARRAY,
+ JSON_BEHAVIOR_EMPTY_OBJECT,
+ JSON_BEHAVIOR_DEFAULT,
+} JsonBehaviorType;
+
+/*
+ * JsonCoercion
+ * Information about coercing a SQL/JSON value to the specified
+ * type at runtime
+ *
+ * A node of this type is created if the parser cannot find a cast expression
+ * using coerce_type() or OMIT QUOTES is specified for JSON_QUERY. If the
+ * latter, 'expr' may contain the cast expression; if not, the quote-stripped
+ * scalar string will be coerced by calling the target type's input function.
+ * See ExecEvalJsonCoercion.
+ */
+typedef struct JsonCoercion
+{
+ NodeTag type;
+
+ Oid targettype;
+ int32 targettypmod;
+ bool omit_quotes; /* OMIT QUOTES specified for JSON_QUERY? */
+ Node *cast_expr; /* coercion cast expression or NULL */
+ Oid collation;
+} JsonCoercion;
+
+/*
+ * JsonItemType
+ * Possible types for scalar values returned by JSON_VALUE()
+ *
+ * The comment next to each item type mentions the corresponding
+ * JsonbValue.jbvType.
+ */
+typedef enum JsonItemType
+{
+ JsonItemTypeNull, /* jbvNull */
+ JsonItemTypeString, /* jbvString */
+ JsonItemTypeNumeric, /* jbvNumeric */
+ JsonItemTypeBoolean, /* jbvBool */
+ JsonItemTypeDate, /* jbvDatetime: DATEOID */
+ JsonItemTypeTime, /* jbvDatetime: TIMEOID */
+ JsonItemTypeTimetz, /* jbvDatetime: TIMETZOID */
+ JsonItemTypeTimestamp, /* jbvDatetime: TIMESTAMPOID */
+ JsonItemTypeTimestamptz, /* jbvDatetime: TIMESTAMPTZOID */
+ JsonItemTypeComposite, /* jbvArray, jbvObject, jbvBinary */
+ JsonItemTypeInvalid,
+} JsonItemType;
+
+/*
+ * JsonItemCoercion
+ * Coercion expression for the given JsonItemType
+ *
+ * If not NULL, 'coercion' given the expression node to convert a scalar value
+ * extracted from a JsonbValue of the given type to the target type given by
+ * JsonExpr.returning. NULL means the coercion is unnecessary.
+ */
+typedef struct JsonItemCoercion
+{
+ NodeTag type;
+
+ JsonItemType item_type;
+ Node *coercion;
+} JsonItemCoercion;
+
+/*
+ * JsonBehavior
+ * Information about ON ERROR / ON EMPTY behaviors of JSON_VALUE(),
+ * JSON_QUERY(), and JSON_EXISTS()
+ *
+ * 'expr' is the expression to emit when a given behavior (EMPTY or ERROR)
+ * occurs on evaluating the SQL/JSON query function. 'coercion' is set
+ * if 'expr' isn't already of the expected target type given by
+ * JsonExpr.returning.
+ */
+typedef struct JsonBehavior
+{
+ NodeTag type;
+
+ JsonBehaviorType btype;
+ Node *expr;
+ JsonCoercion *coercion; /* to coerce behavior expression when there is
+ * no cast to the target type */
+ int location; /* token location, or -1 if unknown */
+} JsonBehavior;
+
+/*
+ * JsonExpr -
+ * Transformed representation of JSON_VALUE(), JSON_QUERY(), and
+ * JSON_EXISTS()
+ */
+typedef struct JsonExpr
+{
+ Expr xpr;
+
+ /* JSON_* function identifier */
+ JsonExprOp op;
+
+ /* json(b)-valued expression to query */
+ Node *formatted_expr;
+
+ /* Format of the above expression needed by ruleutils.c */
+ JsonFormat *format;
+
+ /* jsopath-valued expression containing the query pattern */
+ Node *path_spec;
+
+ /* Expected type/format of the output. */
+ JsonReturning *returning;
+
+ /* Information about the PASSING argument expressions */
+ List *passing_names;
+ List *passing_values;
+
+ /* Use-specified or default ON EMPTY and ON ERROR behaviors */
+ JsonBehavior *on_empty;
+ JsonBehavior *on_error;
+
+ /*
+ * Expression to convert the result of JSON_* function to the RETURNING
+ * type
+ */
+ Node *result_coercion;
+
+ /*
+ * List of expressions for coercing JSON_VALUE() result values, containing
+ * one element for every JsonItemType.
+ */
+ List *item_coercions;
+
+ /* WRAPPER specification for JSON_QUERY */
+ JsonWrapper wrapper;
+
+ /* KEEP or OMIT QUOTES for singleton scalars returned by JSON_QUERY() */
+ bool omit_quotes;
+
+ /* Original JsonFuncExpr's location */
+ int location;
+} JsonExpr;
+
/* ----------------
* NullTest
*
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
index 2331acac09..94e1cb4dce 100644
--- a/src/include/parser/kwlist.h
+++ b/src/include/parser/kwlist.h
@@ -93,6 +93,7 @@ PG_KEYWORD("commit", COMMIT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("committed", COMMITTED, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("compression", COMPRESSION, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("concurrently", CONCURRENTLY, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("conditional", CONDITIONAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("configuration", CONFIGURATION, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("conflict", CONFLICT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("connection", CONNECTION, UNRESERVED_KEYWORD, BARE_LABEL)
@@ -147,11 +148,13 @@ PG_KEYWORD("double", DOUBLE_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("drop", DROP, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("each", EACH, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("else", ELSE, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("empty", EMPTY_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("enable", ENABLE_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("encoding", ENCODING, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("encrypted", ENCRYPTED, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("end", END_P, RESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("enum", ENUM_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("error", ERROR_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("escape", ESCAPE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("event", EVENT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("except", EXCEPT, RESERVED_KEYWORD, AS_LABEL)
@@ -233,10 +236,14 @@ PG_KEYWORD("join", JOIN, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("json", JSON, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("json_array", JSON_ARRAY, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("json_arrayagg", JSON_ARRAYAGG, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("json_exists", JSON_EXISTS, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("json_object", JSON_OBJECT, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("json_objectagg", JSON_OBJECTAGG, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("json_query", JSON_QUERY, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("json_scalar", JSON_SCALAR, COL_NAME_KEYWORD, BARE_LABEL)
PG_KEYWORD("json_serialize", JSON_SERIALIZE, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("json_value", JSON_VALUE, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("keep", KEEP, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("key", KEY, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("keys", KEYS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("label", LABEL, UNRESERVED_KEYWORD, BARE_LABEL)
@@ -302,6 +309,7 @@ PG_KEYWORD("off", OFF, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("offset", OFFSET, RESERVED_KEYWORD, AS_LABEL)
PG_KEYWORD("oids", OIDS, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("old", OLD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("omit", OMIT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("on", ON, RESERVED_KEYWORD, AS_LABEL)
PG_KEYWORD("only", ONLY, RESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("operator", OPERATOR, UNRESERVED_KEYWORD, BARE_LABEL)
@@ -344,6 +352,7 @@ PG_KEYWORD("procedures", PROCEDURES, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("program", PROGRAM, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("publication", PUBLICATION, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("quote", QUOTE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("quotes", QUOTES, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("range", RANGE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("read", READ, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("real", REAL, COL_NAME_KEYWORD, BARE_LABEL)
@@ -414,6 +423,7 @@ PG_KEYWORD("stdout", STDOUT, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("storage", STORAGE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("stored", STORED, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("strict", STRICT_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("string", STRING_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("strip", STRIP_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("subscription", SUBSCRIPTION, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("substring", SUBSTRING, COL_NAME_KEYWORD, BARE_LABEL)
@@ -449,6 +459,7 @@ PG_KEYWORD("types", TYPES_P, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("uescape", UESCAPE, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("unbounded", UNBOUNDED, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("uncommitted", UNCOMMITTED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("unconditional", UNCONDITIONAL, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("unencrypted", UNENCRYPTED, UNRESERVED_KEYWORD, BARE_LABEL)
PG_KEYWORD("union", UNION, RESERVED_KEYWORD, AS_LABEL)
PG_KEYWORD("unique", UNIQUE, RESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/utils/formatting.h b/src/include/utils/formatting.h
index 7ea1a70f71..cde030414e 100644
--- a/src/include/utils/formatting.h
+++ b/src/include/utils/formatting.h
@@ -29,5 +29,6 @@ extern char *asc_initcap(const char *buff, size_t nbytes);
extern Datum parse_datetime(text *date_txt, text *fmt, Oid collid, bool strict,
Oid *typid, int32 *typmod, int *tz,
struct Node *escontext);
+extern bool datetime_format_has_tz(const char *fmt_str);
#endif
diff --git a/src/include/utils/jsonb.h b/src/include/utils/jsonb.h
index e38dfd4901..d589ace5a2 100644
--- a/src/include/utils/jsonb.h
+++ b/src/include/utils/jsonb.h
@@ -422,6 +422,7 @@ extern char *JsonbToCString(StringInfo out, JsonbContainer *in,
int estimated_len);
extern char *JsonbToCStringIndent(StringInfo out, JsonbContainer *in,
int estimated_len);
+extern char *JsonbUnquote(Jsonb *jb);
extern bool JsonbExtractScalar(JsonbContainer *jbc, JsonbValue *res);
extern const char *JsonbTypeName(JsonbValue *val);
diff --git a/src/include/utils/jsonfuncs.h b/src/include/utils/jsonfuncs.h
index 31c1ae4767..190e13284b 100644
--- a/src/include/utils/jsonfuncs.h
+++ b/src/include/utils/jsonfuncs.h
@@ -15,6 +15,7 @@
#define JSONFUNCS_H
#include "common/jsonapi.h"
+#include "nodes/nodes.h"
#include "utils/jsonb.h"
/*
@@ -88,4 +89,10 @@ extern Datum datum_to_jsonb(Datum val, JsonTypeCategory tcategory,
Oid outfuncoid);
extern Datum jsonb_from_text(text *js, bool unique_keys);
+extern Datum json_populate_type(Datum json_val, Oid json_type,
+ Oid typid, int32 typmod,
+ void **cache, MemoryContext mcxt,
+ bool *isnull,
+ Node *escontext);
+
#endif
diff --git a/src/include/utils/jsonpath.h b/src/include/utils/jsonpath.h
index 0f0e126e03..0f4b1ebc9f 100644
--- a/src/include/utils/jsonpath.h
+++ b/src/include/utils/jsonpath.h
@@ -16,6 +16,7 @@
#include "fmgr.h"
#include "nodes/pg_list.h"
+#include "nodes/primnodes.h"
#include "utils/jsonb.h"
typedef struct
@@ -202,6 +203,7 @@ extern bool jspGetBool(JsonPathItem *v);
extern char *jspGetString(JsonPathItem *v, int32 *len);
extern bool jspGetArraySubscript(JsonPathItem *v, JsonPathItem *from,
JsonPathItem *to, int i);
+extern bool jspIsMutable(JsonPath *path, List *varnames, List *varexprs);
extern const char *jspOperationName(JsonPathItemType type);
@@ -279,4 +281,26 @@ extern bool jspConvertRegexFlags(uint32 xflags, int *result,
struct Node *escontext);
+/*
+ * Evaluation of jsonpath
+ */
+
+/* External variable passed into jsonpath. */
+typedef struct JsonPathVariable
+{
+ char *name;
+ Oid typid;
+ int32 typmod;
+ Datum value;
+ bool isnull;
+} JsonPathVariable;
+
+
+/* SQL/JSON item */
+extern bool JsonPathExists(Datum jb, JsonPath *path, bool *error, List *vars);
+extern Datum JsonPathQuery(Datum jb, JsonPath *jp, JsonWrapper wrapper,
+ bool *empty, bool *error, List *vars);
+extern JsonbValue *JsonPathValue(Datum jb, JsonPath *jp, bool *empty,
+ bool *error, List *vars);
+
#endif
diff --git a/src/interfaces/ecpg/preproc/ecpg.trailer b/src/interfaces/ecpg/preproc/ecpg.trailer
index 435c139ec2..b2aa44f36d 100644
--- a/src/interfaces/ecpg/preproc/ecpg.trailer
+++ b/src/interfaces/ecpg/preproc/ecpg.trailer
@@ -651,6 +651,34 @@ var_type: simple_type
$$.type_index = mm_strdup("-1");
$$.type_sizeof = NULL;
}
+ | STRING_P
+ {
+ if (INFORMIX_MODE)
+ {
+ /* In Informix mode, "string" is automatically a typedef */
+ $$.type_enum = ECPGt_string;
+ $$.type_str = mm_strdup("char");
+ $$.type_dimension = mm_strdup("-1");
+ $$.type_index = mm_strdup("-1");
+ $$.type_sizeof = NULL;
+ }
+ else
+ {
+ /* Otherwise, legal only if user typedef'ed it */
+ struct typedefs *this = get_typedef("string", false);
+
+ $$.type_str = (this->type->type_enum == ECPGt_varchar || this->type->type_enum == ECPGt_bytea) ? EMPTY : mm_strdup(this->name);
+ $$.type_enum = this->type->type_enum;
+ $$.type_dimension = this->type->type_dimension;
+ $$.type_index = this->type->type_index;
+ if (this->type->type_sizeof && strlen(this->type->type_sizeof) != 0)
+ $$.type_sizeof = this->type->type_sizeof;
+ else
+ $$.type_sizeof = cat_str(3, mm_strdup("sizeof("), mm_strdup(this->name), mm_strdup(")"));
+
+ struct_member_list[struct_level] = ECPGstruct_member_dup(this->struct_member_list);
+ }
+ }
| INTERVAL ecpg_interval
{
$$.type_enum = ECPGt_interval;
diff --git a/src/test/regress/expected/sqljson_queryfuncs.out b/src/test/regress/expected/sqljson_queryfuncs.out
new file mode 100644
index 0000000000..f5b57465d6
--- /dev/null
+++ b/src/test/regress/expected/sqljson_queryfuncs.out
@@ -0,0 +1,1261 @@
+-- JSON_EXISTS
+-- json arguments currently not supported
+SELECT JSON_EXISTS(NULL FORMAT JSON, '$');
+ERROR: JSON_EXISTS() is not yet implemented for the json type
+LINE 1: SELECT JSON_EXISTS(NULL FORMAT JSON, '$');
+ ^
+HINT: Try casting the argument to jsonb
+SELECT JSON_EXISTS(NULL::jsonb, '$');
+ json_exists
+-------------
+
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '[]', '$');
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_EXISTS(JSON_OBJECT(RETURNING jsonb), '$');
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '1', '$');
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_EXISTS(jsonb 'null', '$');
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '[]', '$');
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '1', '$.a');
+ json_exists
+-------------
+ f
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '1', 'strict $.a'); -- FALSE on error
+ json_exists
+-------------
+ f
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '1', 'strict $.a' ERROR ON ERROR);
+ERROR: jsonpath member accessor can only be applied to an object
+SELECT JSON_EXISTS(jsonb 'null', '$.a');
+ json_exists
+-------------
+ f
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '[]', '$.a');
+ json_exists
+-------------
+ f
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '[1, "aaa", {"a": 1}]', 'strict $.a'); -- FALSE on error
+ json_exists
+-------------
+ f
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '[1, "aaa", {"a": 1}]', 'lax $.a');
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '{}', '$.a');
+ json_exists
+-------------
+ f
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '{"b": 1, "a": 2}', '$.a');
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '1', '$.a.b');
+ json_exists
+-------------
+ f
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '{"a": {"b": 1}}', '$.a.b');
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.a.b');
+ json_exists
+-------------
+ f
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x)' PASSING 1 AS x);
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x)' PASSING '1' AS x);
+ json_exists
+-------------
+ f
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x && @ < $y)' PASSING 0 AS x, 2 AS y);
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x && @ < $y)' PASSING 0 AS x, 1 AS y);
+ json_exists
+-------------
+ f
+(1 row)
+
+-- extension: boolean expressions
+SELECT JSON_EXISTS(jsonb '1', '$ > 2');
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_EXISTS(jsonb '1', '$.a > 2' ERROR ON ERROR);
+ json_exists
+-------------
+ t
+(1 row)
+
+-- JSON_VALUE
+-- json arguments currently not supported
+SELECT JSON_VALUE(NULL FORMAT JSON, '$');
+ERROR: JSON_VALUE() is not yet implemented for the json type
+LINE 1: SELECT JSON_VALUE(NULL FORMAT JSON, '$');
+ ^
+HINT: Try casting the argument to jsonb
+SELECT JSON_VALUE(NULL::jsonb, '$');
+ json_value
+------------
+
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$');
+ json_value
+------------
+
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$' RETURNING int);
+ json_value
+------------
+
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'true', '$');
+ json_value
+------------
+ true
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'true', '$' RETURNING bool);
+ json_value
+------------
+ t
+(1 row)
+
+SELECT JSON_VALUE(jsonb '123', '$');
+ json_value
+------------
+ 123
+(1 row)
+
+SELECT JSON_VALUE(jsonb '123', '$' RETURNING int) + 234;
+ ?column?
+----------
+ 357
+(1 row)
+
+SELECT JSON_VALUE(jsonb '123', '$' RETURNING text);
+ json_value
+------------
+ 123
+(1 row)
+
+/* jsonb bytea ??? */
+SELECT JSON_VALUE(jsonb '123', '$' RETURNING bytea ERROR ON ERROR);
+ERROR: SQL/JSON item cannot be cast to target type
+SELECT JSON_VALUE(jsonb '1.23', '$');
+ json_value
+------------
+ 1.23
+(1 row)
+
+SELECT JSON_VALUE(jsonb '1.23', '$' RETURNING int);
+ json_value
+------------
+ 1
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"1.23"', '$' RETURNING numeric);
+ json_value
+------------
+ 1.23
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"1.23"', '$' RETURNING int ERROR ON ERROR);
+ERROR: invalid input syntax for type integer: "1.23"
+SELECT JSON_VALUE(jsonb '"aaa"', '$');
+ json_value
+------------
+ aaa
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING text);
+ json_value
+------------
+ aaa
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING char(5));
+ json_value
+------------
+ aaa
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING char(2));
+ json_value
+------------
+ aa
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING json);
+ json_value
+------------
+ "aaa"
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING jsonb);
+ json_value
+------------
+ "aaa"
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING json ERROR ON ERROR);
+ json_value
+------------
+ "aaa"
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING jsonb ERROR ON ERROR);
+ json_value
+------------
+ "aaa"
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"\"aaa\""', '$' RETURNING json);
+ json_value
+------------
+ "\"aaa\""
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"\"aaa\""', '$' RETURNING jsonb);
+ json_value
+------------
+ "\"aaa\""
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING int);
+ json_value
+------------
+
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING int ERROR ON ERROR);
+ERROR: invalid input syntax for type integer: "aaa"
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING int DEFAULT 111 ON ERROR);
+ json_value
+------------
+ 111
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"123"', '$' RETURNING int) + 234;
+ ?column?
+----------
+ 357
+(1 row)
+
+SELECT JSON_VALUE(jsonb '"2017-02-20"', '$' RETURNING date) + 9;
+ ?column?
+------------
+ 03-01-2017
+(1 row)
+
+-- Test NULL checks execution in domain types
+CREATE DOMAIN sqljsonb_int_not_null AS int NOT NULL;
+SELECT JSON_VALUE(jsonb 'null', '$' RETURNING sqljsonb_int_not_null);
+ json_value
+------------
+
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$' RETURNING sqljsonb_int_not_null ERROR ON ERROR);
+ERROR: domain sqljsonb_int_not_null does not allow null values
+SELECT JSON_VALUE(jsonb 'null', '$' RETURNING sqljsonb_int_not_null DEFAULT 2 ON EMPTY ERROR ON ERROR);
+ERROR: domain sqljsonb_int_not_null does not allow null values
+SELECT JSON_VALUE(jsonb '1', '$.a' RETURNING sqljsonb_int_not_null DEFAULT 2 ON EMPTY ERROR ON ERROR);
+ json_value
+------------
+ 2
+(1 row)
+
+SELECT JSON_VALUE(jsonb '1', '$.a' RETURNING sqljsonb_int_not_null DEFAULT NULL ON EMPTY ERROR ON ERROR);
+ json_value
+------------
+
+(1 row)
+
+CREATE TYPE rainbow AS ENUM ('red', 'orange', 'yellow', 'green', 'blue', 'purple');
+CREATE DOMAIN rgb AS rainbow CHECK (VALUE IN ('red', 'green', 'blue'));
+SELECT JSON_VALUE('"purple"'::jsonb, 'lax $[*]' RETURNING rgb);
+ json_value
+------------
+
+(1 row)
+
+SELECT JSON_VALUE('"purple"'::jsonb, 'lax $[*]' RETURNING rgb ERROR ON ERROR);
+ERROR: value for domain rgb violates check constraint "rgb_check"
+SELECT JSON_VALUE(jsonb '[]', '$');
+ json_value
+------------
+
+(1 row)
+
+SELECT JSON_VALUE(jsonb '[]', '$' ERROR ON ERROR);
+ERROR: JSON path expression in JSON_VALUE should return singleton scalar item
+SELECT JSON_VALUE(jsonb '{}', '$');
+ json_value
+------------
+
+(1 row)
+
+SELECT JSON_VALUE(jsonb '{}', '$' ERROR ON ERROR);
+ERROR: JSON path expression in JSON_VALUE should return singleton scalar item
+SELECT JSON_VALUE(jsonb '1', '$.a');
+ json_value
+------------
+
+(1 row)
+
+SELECT JSON_VALUE(jsonb '1', 'strict $.a' ERROR ON ERROR);
+ERROR: jsonpath member accessor can only be applied to an object
+SELECT JSON_VALUE(jsonb '1', 'strict $.a' DEFAULT 'error' ON ERROR);
+ json_value
+------------
+ error
+(1 row)
+
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' ERROR ON ERROR);
+ERROR: no SQL/JSON item
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' ERROR ON EMPTY ERROR ON ERROR);
+ERROR: no SQL/JSON item
+SELECT JSON_VALUE(jsonb '1', 'strict $.a' DEFAULT 2 ON ERROR);
+ json_value
+------------
+ 2
+(1 row)
+
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' DEFAULT 2 ON ERROR);
+ json_value
+------------
+ 2
+(1 row)
+
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' DEFAULT '2' ON ERROR);
+ json_value
+------------
+ 2
+(1 row)
+
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' NULL ON EMPTY DEFAULT '2' ON ERROR);
+ json_value
+------------
+
+(1 row)
+
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' DEFAULT '2' ON EMPTY DEFAULT '3' ON ERROR);
+ json_value
+------------
+ 2
+(1 row)
+
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' ERROR ON EMPTY DEFAULT '3' ON ERROR);
+ERROR: no SQL/JSON item
+SELECT JSON_VALUE(jsonb '[1,2]', '$[*]' ERROR ON ERROR);
+ERROR: JSON path expression in JSON_VALUE should return singleton scalar item
+SELECT JSON_VALUE(jsonb '[1,2]', '$[*]' DEFAULT '0' ON ERROR);
+ json_value
+------------
+ 0
+(1 row)
+
+SELECT JSON_VALUE(jsonb '[" "]', '$[*]' RETURNING int ERROR ON ERROR);
+ERROR: invalid input syntax for type integer: " "
+SELECT JSON_VALUE(jsonb '[" "]', '$[*]' RETURNING int DEFAULT 2 + 3 ON ERROR);
+ json_value
+------------
+ 5
+(1 row)
+
+SELECT JSON_VALUE(jsonb '["1"]', '$[*]' RETURNING int DEFAULT 2 + 3 ON ERROR);
+ json_value
+------------
+ 1
+(1 row)
+
+SELECT JSON_VALUE(jsonb '["1"]', '$[*]' RETURNING int FORMAT JSON); -- RETURNING FORMAT not allowed
+ERROR: cannot specify FORMAT in RETURNING clause of JSON_VALUE()
+LINE 1: ...CT JSON_VALUE(jsonb '["1"]', '$[*]' RETURNING int FORMAT JSO...
+ ^
+-- RETUGNING pseudo-types not allowed
+SELECT JSON_VALUE(jsonb '["1"]', '$[*]' RETURNING record);
+ERROR: returning pseudo-types is not supported in SQL/JSON functions
+SELECT
+ x,
+ JSON_VALUE(
+ jsonb '{"a": 1, "b": 2}',
+ '$.* ? (@ > $x)' PASSING x AS x
+ RETURNING int
+ DEFAULT -1 ON EMPTY
+ DEFAULT -2 ON ERROR
+ ) y
+FROM
+ generate_series(0, 2) x;
+ x | y
+---+----
+ 0 | -2
+ 1 | 2
+ 2 | -1
+(3 rows)
+
+SELECT JSON_VALUE(jsonb 'null', '$a' PASSING point ' (1, 2 )' AS a);
+ json_value
+------------
+ (1,2)
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$a' PASSING point ' (1, 2 )' AS a RETURNING point);
+ json_value
+------------
+ (1,2)
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$a' PASSING point ' (1, 2 )' AS a RETURNING point ERROR ON ERROR);
+ json_value
+------------
+ (1,2)
+(1 row)
+
+-- Test PASSING and RETURNING date/time types
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts);
+ json_value
+------------------------------
+ Tue Feb 20 18:34:56 2018 PST
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING timestamptz);
+ json_value
+------------------------------
+ Tue Feb 20 18:34:56 2018 PST
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING timestamp);
+ json_value
+--------------------------
+ Tue Feb 20 18:34:56 2018
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING date '2018-02-21 12:34:56 +10' AS ts RETURNING date);
+ json_value
+------------
+ 02-21-2018
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING time '2018-02-21 12:34:56 +10' AS ts RETURNING time);
+ json_value
+------------
+ 12:34:56
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timetz '2018-02-21 12:34:56 +10' AS ts RETURNING timetz);
+ json_value
+-------------
+ 12:34:56+10
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamp '2018-02-21 12:34:56 +10' AS ts RETURNING timestamp);
+ json_value
+--------------------------
+ Wed Feb 21 12:34:56 2018
+(1 row)
+
+-- Also test RETURNING json[b]
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING json);
+ json_value
+-----------------------------
+ "2018-02-21T02:34:56+00:00"
+(1 row)
+
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING jsonb);
+ json_value
+-----------------------------
+ "2018-02-21T02:34:56+00:00"
+(1 row)
+
+-- JSON_QUERY
+-- json arguments currently not supported
+SELECT JSON_QUERY(NULL FORMAT JSON, '$');
+ERROR: JSON_QUERY() is not yet implemented for the json type
+LINE 1: SELECT JSON_QUERY(NULL FORMAT JSON, '$');
+ ^
+HINT: Try casting the argument to jsonb
+SELECT JSON_VALUE(NULL::jsonb, '$');
+ json_value
+------------
+
+(1 row)
+
+SELECT
+ JSON_QUERY(js, '$'),
+ JSON_QUERY(js, '$' WITHOUT WRAPPER),
+ JSON_QUERY(js, '$' WITH CONDITIONAL WRAPPER),
+ JSON_QUERY(js, '$' WITH UNCONDITIONAL ARRAY WRAPPER),
+ JSON_QUERY(js, '$' WITH ARRAY WRAPPER)
+FROM
+ (VALUES
+ (jsonb 'null'),
+ ('12.3'),
+ ('true'),
+ ('"aaa"'),
+ ('[1, null, "2"]'),
+ ('{"a": 1, "b": [2]}')
+ ) foo(js);
+ json_query | json_query | json_query | json_query | json_query
+--------------------+--------------------+--------------------+----------------------+----------------------
+ null | null | [null] | [null] | [null]
+ 12.3 | 12.3 | [12.3] | [12.3] | [12.3]
+ true | true | [true] | [true] | [true]
+ "aaa" | "aaa" | ["aaa"] | ["aaa"] | ["aaa"]
+ [1, null, "2"] | [1, null, "2"] | [1, null, "2"] | [[1, null, "2"]] | [[1, null, "2"]]
+ {"a": 1, "b": [2]} | {"a": 1, "b": [2]} | {"a": 1, "b": [2]} | [{"a": 1, "b": [2]}] | [{"a": 1, "b": [2]}]
+(6 rows)
+
+SELECT
+ JSON_QUERY(js, 'strict $[*]') AS "unspec",
+ JSON_QUERY(js, 'strict $[*]' WITHOUT WRAPPER) AS "without",
+ JSON_QUERY(js, 'strict $[*]' WITH CONDITIONAL WRAPPER) AS "with cond",
+ JSON_QUERY(js, 'strict $[*]' WITH UNCONDITIONAL ARRAY WRAPPER) AS "with uncond",
+ JSON_QUERY(js, 'strict $[*]' WITH ARRAY WRAPPER) AS "with"
+FROM
+ (VALUES
+ (jsonb '1'),
+ ('[]'),
+ ('[null]'),
+ ('[12.3]'),
+ ('[true]'),
+ ('["aaa"]'),
+ ('[[1, 2, 3]]'),
+ ('[{"a": 1, "b": [2]}]'),
+ ('[1, "2", null, [3]]')
+ ) foo(js);
+ unspec | without | with cond | with uncond | with
+--------------------+--------------------+---------------------+----------------------+----------------------
+ | | | |
+ | | | |
+ null | null | [null] | [null] | [null]
+ 12.3 | 12.3 | [12.3] | [12.3] | [12.3]
+ true | true | [true] | [true] | [true]
+ "aaa" | "aaa" | ["aaa"] | ["aaa"] | ["aaa"]
+ [1, 2, 3] | [1, 2, 3] | [1, 2, 3] | [[1, 2, 3]] | [[1, 2, 3]]
+ {"a": 1, "b": [2]} | {"a": 1, "b": [2]} | {"a": 1, "b": [2]} | [{"a": 1, "b": [2]}] | [{"a": 1, "b": [2]}]
+ | | [1, "2", null, [3]] | [1, "2", null, [3]] | [1, "2", null, [3]]
+(9 rows)
+
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text);
+ json_query
+------------
+ "aaa"
+(1 row)
+
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text KEEP QUOTES);
+ json_query
+------------
+ "aaa"
+(1 row)
+
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text KEEP QUOTES ON SCALAR STRING);
+ json_query
+------------
+ "aaa"
+(1 row)
+
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text OMIT QUOTES);
+ json_query
+------------
+ aaa
+(1 row)
+
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text OMIT QUOTES ON SCALAR STRING);
+ json_query
+------------
+ aaa
+(1 row)
+
+SELECT JSON_QUERY(jsonb '"aaa"', '$' OMIT QUOTES ERROR ON ERROR);
+ERROR: invalid input syntax for type json
+DETAIL: Token "aaa" is invalid.
+CONTEXT: JSON data, line 1: aaa
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING json OMIT QUOTES ERROR ON ERROR);
+ERROR: invalid input syntax for type json
+DETAIL: Token "aaa" is invalid.
+CONTEXT: JSON data, line 1: aaa
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING bytea FORMAT JSON OMIT QUOTES ERROR ON ERROR);
+ json_query
+------------
+ \x616161
+(1 row)
+
+-- Behavior when a RETURNING type has typmod != -1
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING char(2));
+ json_query
+------------
+ "a
+(1 row)
+
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING char(2) OMIT QUOTES);
+ json_query
+------------
+ aa
+(1 row)
+
+SELECT JSON_QUERY(jsonb '"aaa"', '$.a' RETURNING char(2) OMIT QUOTES DEFAULT 'bbb' ON EMPTY);
+ json_query
+------------
+ bb
+(1 row)
+
+SELECT JSON_QUERY(jsonb '"aaa"', '$.a' RETURNING char(2) OMIT QUOTES DEFAULT '"bbb"'::jsonb ON EMPTY);
+ json_query
+------------
+ "b
+(1 row)
+
+-- QUOTES behavior should not be specified when WITH WRAPPER used:
+-- Should fail
+SELECT JSON_QUERY(jsonb '[1]', '$' WITH WRAPPER OMIT QUOTES);
+ERROR: SQL/JSON QUOTES behavior must not be specified when WITH WRAPPER is used
+LINE 1: SELECT JSON_QUERY(jsonb '[1]', '$' WITH WRAPPER OMIT QUOTES)...
+ ^
+SELECT JSON_QUERY(jsonb '[1]', '$' WITH WRAPPER KEEP QUOTES);
+ERROR: SQL/JSON QUOTES behavior must not be specified when WITH WRAPPER is used
+LINE 1: SELECT JSON_QUERY(jsonb '[1]', '$' WITH WRAPPER KEEP QUOTES)...
+ ^
+SELECT JSON_QUERY(jsonb '[1]', '$' WITH CONDITIONAL WRAPPER KEEP QUOTES);
+ERROR: SQL/JSON QUOTES behavior must not be specified when WITH WRAPPER is used
+LINE 1: SELECT JSON_QUERY(jsonb '[1]', '$' WITH CONDITIONAL WRAPPER ...
+ ^
+SELECT JSON_QUERY(jsonb '[1]', '$' WITH CONDITIONAL WRAPPER OMIT QUOTES);
+ERROR: SQL/JSON QUOTES behavior must not be specified when WITH WRAPPER is used
+LINE 1: SELECT JSON_QUERY(jsonb '[1]', '$' WITH CONDITIONAL WRAPPER ...
+ ^
+-- Should succeed
+SELECT JSON_QUERY(jsonb '[1]', '$' WITHOUT WRAPPER OMIT QUOTES);
+ json_query
+------------
+ [1]
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1]', '$' WITHOUT WRAPPER KEEP QUOTES);
+ json_query
+------------
+ [1]
+(1 row)
+
+-- test QUOTES behavior.
+SELECT JSON_QUERY(jsonb'{"rec": "{1,2,3}"}', '$.rec' returning int[] omit quotes);
+ json_query
+------------
+ {1,2,3}
+(1 row)
+
+SELECT JSON_QUERY(jsonb'{"rec": "{1,2,3}"}', '$.rec' returning int[] keep quotes);
+ json_query
+------------
+
+(1 row)
+
+SELECT JSON_QUERY(jsonb'{"rec": "{1,2,3}"}', '$.rec' returning int[] keep quotes error on error);
+ERROR: expected JSON array
+SELECT JSON_QUERY(jsonb'{"rec": "[1,2]"}', '$.rec' returning int4range omit quotes);
+ json_query
+------------
+ [1,3)
+(1 row)
+
+SELECT JSON_QUERY(jsonb'{"rec": "[1,2]"}', '$.rec' returning int4range keep quotes);
+ json_query
+------------
+
+(1 row)
+
+SELECT JSON_QUERY(jsonb'{"rec": "[1,2]"}', '$.rec' returning int4range keep quotes error on error);
+ERROR: malformed range literal: ""[1,2]""
+DETAIL: Missing left parenthesis or bracket.
+SELECT JSON_QUERY(jsonb '[]', '$[*]');
+ json_query
+------------
+
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[]', '$[*]' NULL ON EMPTY);
+ json_query
+------------
+
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[]', '$[*]' EMPTY ON EMPTY);
+ json_query
+------------
+ []
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[]', '$[*]' EMPTY ARRAY ON EMPTY);
+ json_query
+------------
+ []
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[]', '$[*]' EMPTY OBJECT ON EMPTY);
+ json_query
+------------
+ {}
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY);
+ERROR: no SQL/JSON item
+SELECT JSON_QUERY(jsonb '[]', '$[*]' DEFAULT '"empty"' ON EMPTY);
+ json_query
+------------
+ "empty"
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY NULL ON ERROR);
+ERROR: no SQL/JSON item
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY EMPTY ARRAY ON ERROR);
+ERROR: no SQL/JSON item
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY EMPTY OBJECT ON ERROR);
+ERROR: no SQL/JSON item
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY ERROR ON ERROR);
+ERROR: no SQL/JSON item
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON ERROR);
+ERROR: no SQL/JSON item
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' ERROR ON ERROR);
+ERROR: JSON path expression in JSON_QUERY should return singleton item without wrapper
+HINT: Use WITH WRAPPER clause to wrap SQL/JSON item sequence into array.
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' DEFAULT '"empty"' ON ERROR);
+ json_query
+------------
+ "empty"
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING json);
+ json_query
+------------
+ [1, 2]
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING json FORMAT JSON);
+ json_query
+------------
+ [1, 2]
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING jsonb);
+ json_query
+------------
+ [1, 2]
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING jsonb FORMAT JSON);
+ json_query
+------------
+ [1, 2]
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING text);
+ json_query
+------------
+ [1, 2]
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING char(10));
+ json_query
+------------
+ [1, 2]
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING char(3));
+ json_query
+------------
+ [1,
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING text FORMAT JSON);
+ json_query
+------------
+ [1, 2]
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING bytea);
+ json_query
+----------------
+ \x5b312c20325d
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING bytea FORMAT JSON);
+ json_query
+----------------
+ \x5b312c20325d
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING bytea EMPTY OBJECT ON ERROR);
+ERROR: cannot cast behavior expression of type jsonb to bytea
+LINE 1: ... JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING bytea EMPTY OBJE...
+ ^
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING bytea FORMAT JSON EMPTY OBJECT ON ERROR);
+ERROR: cannot cast behavior expression of type jsonb to bytea
+LINE 1: ...jsonb '[1,2]', '$[*]' RETURNING bytea FORMAT JSON EMPTY OBJE...
+ ^
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING json EMPTY OBJECT ON ERROR);
+ json_query
+------------
+ {}
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING jsonb EMPTY OBJECT ON ERROR);
+ json_query
+------------
+ {}
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[3,4]', '$[*]' RETURNING bigint[] EMPTY OBJECT ON ERROR);
+ERROR: cannot cast behavior expression of type jsonb to bigint[]
+LINE 1: ...ON_QUERY(jsonb '[3,4]', '$[*]' RETURNING bigint[] EMPTY OBJE...
+ ^
+SELECT JSON_QUERY(jsonb '"[3,4]"', '$[*]' RETURNING bigint[] EMPTY OBJECT ON ERROR);
+ERROR: cannot cast behavior expression of type jsonb to bigint[]
+LINE 1: ..._QUERY(jsonb '"[3,4]"', '$[*]' RETURNING bigint[] EMPTY OBJE...
+ ^
+-- Coercion fails with quotes on
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int2 error on error);
+ERROR: invalid input syntax for type smallint: ""123.1""
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int4 error on error);
+ERROR: invalid input syntax for type integer: ""123.1""
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int8 error on error);
+ERROR: invalid input syntax for type bigint: ""123.1""
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING bool error on error);
+ERROR: invalid input syntax for type boolean: ""123.1""
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING numeric error on error);
+ERROR: invalid input syntax for type numeric: ""123.1""
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING real error on error);
+ERROR: invalid input syntax for type real: ""123.1""
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING float8 error on error);
+ERROR: invalid input syntax for type double precision: ""123.1""
+-- Fine with OMIT QUOTES
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int2 omit quotes error on error);
+ERROR: invalid input syntax for type smallint: "123.1"
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING float8 omit quotes error on error);
+ json_query
+------------
+ 123.1
+(1 row)
+
+-- RETUGNING pseudo-types not allowed
+SELECT JSON_QUERY(jsonb '[3,4]', '$[*]' RETURNING anyarray EMPTY OBJECT ON ERROR);
+ERROR: returning pseudo-types is not supported in SQL/JSON functions
+SELECT
+ x, y,
+ JSON_QUERY(
+ jsonb '[1,2,3,4,5,null]',
+ '$[*] ? (@ >= $x && @ <= $y)'
+ PASSING x AS x, y AS y
+ WITH CONDITIONAL WRAPPER
+ EMPTY ARRAY ON EMPTY
+ ) list
+FROM
+ generate_series(0, 4) x,
+ generate_series(0, 4) y;
+ x | y | list
+---+---+--------------
+ 0 | 0 | []
+ 0 | 1 | [1]
+ 0 | 2 | [1, 2]
+ 0 | 3 | [1, 2, 3]
+ 0 | 4 | [1, 2, 3, 4]
+ 1 | 0 | []
+ 1 | 1 | [1]
+ 1 | 2 | [1, 2]
+ 1 | 3 | [1, 2, 3]
+ 1 | 4 | [1, 2, 3, 4]
+ 2 | 0 | []
+ 2 | 1 | []
+ 2 | 2 | [2]
+ 2 | 3 | [2, 3]
+ 2 | 4 | [2, 3, 4]
+ 3 | 0 | []
+ 3 | 1 | []
+ 3 | 2 | []
+ 3 | 3 | [3]
+ 3 | 4 | [3, 4]
+ 4 | 0 | []
+ 4 | 1 | []
+ 4 | 2 | []
+ 4 | 3 | []
+ 4 | 4 | [4]
+(25 rows)
+
+-- record type returning with quotes behavior.
+CREATE TYPE comp_abc AS (a text, b int, c timestamp);
+SELECT JSON_QUERY(jsonb'{"rec": "(abc,42,01.02.2003)"}', '$.rec' returning comp_abc omit quotes);
+ json_query
+-------------------------------------
+ (abc,42,"Thu Jan 02 00:00:00 2003")
+(1 row)
+
+SELECT JSON_QUERY(jsonb'{"rec": "(abc,42,01.02.2003)"}', '$.rec' returning comp_abc keep quotes);
+ json_query
+------------
+
+(1 row)
+
+SELECT JSON_QUERY(jsonb'{"rec": "(abc,42,01.02.2003)"}', '$.rec' returning comp_abc keep quotes error on error);
+ERROR: cannot call populate_composite on a scalar
+DROP TYPE comp_abc;
+-- Extension: record types returning
+CREATE TYPE sqljsonb_rec AS (a int, t text, js json, jb jsonb, jsa json[]);
+CREATE TYPE sqljsonb_reca AS (reca sqljsonb_rec[]);
+SELECT JSON_QUERY(jsonb '[{"a": 1, "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}}, {"a": 2}]', '$[0]' RETURNING sqljsonb_rec);
+ json_query
+-----------------------------------------------------
+ (1,aaa,"[1, ""2"", {}]","{""x"": [1, ""2"", {}]}",)
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[{"a": "a", "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}}, {"a": 2}]', '$[0]' RETURNING sqljsonb_rec ERROR ON ERROR);
+ERROR: invalid input syntax for type integer: "a"
+SELECT JSON_QUERY(jsonb '[{"a": "a", "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}}, {"a": 2}]', '$[0]' RETURNING sqljsonb_rec);
+ json_query
+------------
+
+(1 row)
+
+SELECT * FROM unnest((JSON_QUERY(jsonb '{"jsa": [{"a": 1, "b": ["foo"]}, {"a": 2, "c": {}}, 123]}', '$' RETURNING sqljsonb_rec)).jsa);
+ unnest
+------------------------
+ {"a": 1, "b": ["foo"]}
+ {"a": 2, "c": {}}
+ 123
+(3 rows)
+
+SELECT * FROM unnest((JSON_QUERY(jsonb '{"reca": [{"a": 1, "t": ["foo", []]}, {"a": 2, "jb": [{}, true]}]}', '$' RETURNING sqljsonb_reca)).reca);
+ a | t | js | jb | jsa
+---+-------------+----+------------+-----
+ 1 | ["foo", []] | | |
+ 2 | | | [{}, true] |
+(2 rows)
+
+SELECT JSON_QUERY(jsonb '[{"a": 1, "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}}, {"a": 2}]', '$[0]' RETURNING jsonpath);
+ json_query
+------------
+
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[{"a": 1, "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}}, {"a": 2}]', '$[0]' RETURNING jsonpath ERROR ON ERROR);
+ERROR: syntax error at or near "{" of jsonpath input
+-- Extension: array types returning
+SELECT JSON_QUERY(jsonb '[1,2,null,"3"]', '$[*]' RETURNING int[] WITH WRAPPER);
+ json_query
+--------------
+ {1,2,NULL,3}
+(1 row)
+
+SELECT JSON_QUERY(jsonb '[1,2,null,"a"]', '$[*]' RETURNING int[] WITH WRAPPER ERROR ON ERROR);
+ERROR: invalid input syntax for type integer: "a"
+SELECT JSON_QUERY(jsonb '[1,2,null,"a"]', '$[*]' RETURNING int[] WITH WRAPPER);
+ json_query
+------------
+
+(1 row)
+
+SELECT * FROM unnest(JSON_QUERY(jsonb '[{"a": 1, "t": ["foo", []]}, {"a": 2, "jb": [{}, true]}]', '$' RETURNING sqljsonb_rec[]));
+ a | t | js | jb | jsa
+---+-------------+----+------------+-----
+ 1 | ["foo", []] | | |
+ 2 | | | [{}, true] |
+(2 rows)
+
+-- Extension: domain types returning
+SELECT JSON_QUERY(jsonb '{"a": 1}', '$.a' RETURNING sqljsonb_int_not_null);
+ json_query
+------------
+ 1
+(1 row)
+
+SELECT JSON_QUERY(jsonb '{"a": 1}', '$.b' RETURNING sqljsonb_int_not_null);
+ json_query
+------------
+
+(1 row)
+
+SELECT JSON_QUERY(jsonb '{"a": 1}', '$.b' RETURNING sqljsonb_int_not_null ERROR ON ERROR);
+ERROR: no SQL/JSON item
+-- Test timestamptz passing and output
+SELECT JSON_QUERY(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts);
+ json_query
+-----------------------------
+ "2018-02-21T02:34:56+00:00"
+(1 row)
+
+SELECT JSON_QUERY(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING json);
+ json_query
+-----------------------------
+ "2018-02-21T02:34:56+00:00"
+(1 row)
+
+SELECT JSON_QUERY(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING jsonb);
+ json_query
+-----------------------------
+ "2018-02-21T02:34:56+00:00"
+(1 row)
+
+-- Test constraints
+CREATE TABLE test_jsonb_constraints (
+ js text,
+ i int,
+ x jsonb DEFAULT JSON_QUERY(jsonb '[1,2]', '$[*]' WITH WRAPPER)
+ CONSTRAINT test_jsonb_constraint1
+ CHECK (js IS JSON)
+ CONSTRAINT test_jsonb_constraint2
+ CHECK (JSON_EXISTS(js::jsonb, '$.a' PASSING i + 5 AS int, i::text AS txt, array[1,2,3] as arr))
+ CONSTRAINT test_jsonb_constraint3
+ CHECK (JSON_VALUE(js::jsonb, '$.a' RETURNING int DEFAULT '12' ON EMPTY ERROR ON ERROR) > i)
+ CONSTRAINT test_jsonb_constraint4
+ CHECK (JSON_QUERY(js::jsonb, '$.a' WITH CONDITIONAL WRAPPER EMPTY OBJECT ON ERROR) < jsonb '[10]')
+ CONSTRAINT test_jsonb_constraint5
+ CHECK (JSON_QUERY(js::jsonb, '$.a' RETURNING char(5) OMIT QUOTES EMPTY ARRAY ON EMPTY) > 'a' COLLATE "C")
+);
+\d test_jsonb_constraints
+ Table "public.test_jsonb_constraints"
+ Column | Type | Collation | Nullable | Default
+--------+---------+-----------+----------+--------------------------------------------------------------------------------
+ js | text | | |
+ i | integer | | |
+ x | jsonb | | | JSON_QUERY('[1, 2]'::jsonb, '$[*]' RETURNING jsonb WITH UNCONDITIONAL WRAPPER)
+Check constraints:
+ "test_jsonb_constraint1" CHECK (js IS JSON)
+ "test_jsonb_constraint2" CHECK (JSON_EXISTS(js::jsonb, '$."a"' PASSING i + 5 AS int, i::text AS txt, ARRAY[1, 2, 3] AS arr))
+ "test_jsonb_constraint3" CHECK (JSON_VALUE(js::jsonb, '$."a"' RETURNING integer DEFAULT 12 ON EMPTY ERROR ON ERROR) > i)
+ "test_jsonb_constraint4" CHECK (JSON_QUERY(js::jsonb, '$."a"' RETURNING jsonb WITH CONDITIONAL WRAPPER EMPTY OBJECT ON ERROR) < '[10]'::jsonb)
+ "test_jsonb_constraint5" CHECK (JSON_QUERY(js::jsonb, '$."a"' RETURNING character(5) OMIT QUOTES EMPTY ARRAY ON EMPTY) > ('a'::bpchar COLLATE "C"))
+
+SELECT check_clause
+FROM information_schema.check_constraints
+WHERE constraint_name LIKE 'test_jsonb_constraint%'
+ORDER BY 1;
+ check_clause
+------------------------------------------------------------------------------------------------------------------------
+ (JSON_QUERY((js)::jsonb, '$."a"' RETURNING character(5) OMIT QUOTES EMPTY ARRAY ON EMPTY) > ('a'::bpchar COLLATE "C"))
+ (JSON_QUERY((js)::jsonb, '$."a"' RETURNING jsonb WITH CONDITIONAL WRAPPER EMPTY OBJECT ON ERROR) < '[10]'::jsonb)
+ (JSON_VALUE((js)::jsonb, '$."a"' RETURNING integer DEFAULT 12 ON EMPTY ERROR ON ERROR) > i)
+ (js IS JSON)
+ JSON_EXISTS((js)::jsonb, '$."a"' PASSING (i + 5) AS int, (i)::text AS txt, ARRAY[1, 2, 3] AS arr)
+(5 rows)
+
+SELECT pg_get_expr(adbin, adrelid)
+FROM pg_attrdef
+WHERE adrelid = 'test_jsonb_constraints'::regclass
+ORDER BY 1;
+ pg_get_expr
+--------------------------------------------------------------------------------
+ JSON_QUERY('[1, 2]'::jsonb, '$[*]' RETURNING jsonb WITH UNCONDITIONAL WRAPPER)
+(1 row)
+
+INSERT INTO test_jsonb_constraints VALUES ('', 1);
+ERROR: new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint1"
+DETAIL: Failing row contains (, 1, [1, 2]).
+INSERT INTO test_jsonb_constraints VALUES ('1', 1);
+ERROR: new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint2"
+DETAIL: Failing row contains (1, 1, [1, 2]).
+INSERT INTO test_jsonb_constraints VALUES ('[]');
+ERROR: new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint2"
+DETAIL: Failing row contains ([], null, [1, 2]).
+INSERT INTO test_jsonb_constraints VALUES ('{"b": 1}', 1);
+ERROR: new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint2"
+DETAIL: Failing row contains ({"b": 1}, 1, [1, 2]).
+INSERT INTO test_jsonb_constraints VALUES ('{"a": 1}', 1);
+ERROR: new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint3"
+DETAIL: Failing row contains ({"a": 1}, 1, [1, 2]).
+INSERT INTO test_jsonb_constraints VALUES ('{"a": 7}', 1);
+ERROR: new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint5"
+DETAIL: Failing row contains ({"a": 7}, 1, [1, 2]).
+INSERT INTO test_jsonb_constraints VALUES ('{"a": 10}', 1);
+ERROR: new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint4"
+DETAIL: Failing row contains ({"a": 10}, 1, [1, 2]).
+DROP TABLE test_jsonb_constraints;
+-- Test mutabilily of query functions
+CREATE TABLE test_jsonb_mutability(js jsonb, b int);
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a[0]'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.time()'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.date()'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.time_tz()'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.timestamp()'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.timestamp_tz()'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.date() < $.time_tz())'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.date() < $.time())'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.time() < $.time())'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.time() < $.time_tz())'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp() < $.timestamp_tz())'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp_tz() < $.timestamp_tz())'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.time() < $.datetime("HH:MI TZH"))'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.date() < $.datetime("HH:MI TZH"))'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp() < $.datetime("HH:MI TZH"))'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp() < $.datetime("HH:MI"))'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp_tz() < $.datetime("HH:MI TZH"))'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp_tz() < $.datetime("HH:MI"))'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.date() < $x' PASSING '12:34'::timetz AS x));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.date() < $x' PASSING '1234'::int AS x));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp(2) < $.timestamp(3))'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime()'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@ < $.datetime())'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime() < $.datetime())'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime() < $.datetime("HH:MI TZH"))'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime("HH:MI TZH") < $.datetime("HH:MI TZH"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime("HH:MI") < $.datetime("YY-MM-DD HH:MI"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime("HH:MI TZH") < $.datetime("YY-MM-DD HH:MI"))'));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime("HH:MI TZH") < $x' PASSING '12:34'::timetz AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime("HH:MI TZH") < $y' PASSING '12:34'::timetz AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime() < $x' PASSING '12:34'::timetz AS x));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime() < $x' PASSING '1234'::int AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime() ? (@ == $x)' PASSING '12:34'::time AS x));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime("YY-MM-DD") ? (@ == $x)' PASSING '2020-07-14'::date AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$[1, $.a ? (@.datetime() == $x)]' PASSING '12:34'::time AS x));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$[1, 0 to $.a ? (@.datetime() == $x)]' PASSING '12:34'::time AS x));
+ERROR: functions in index expression must be marked IMMUTABLE
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$[1, $.a ? (@.datetime("HH:MI") == $x)]' PASSING '12:34'::time AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_VALUE(js, '$' DEFAULT random()::int ON ERROR));
+ERROR: functions in index expression must be marked IMMUTABLE
+-- DEFAULT expression
+CREATE OR REPLACE FUNCTION ret_setint() RETURNS SETOF integer AS
+$$
+BEGIN
+ RETURN QUERY EXECUTE 'select 1 union all select 1';
+END;
+$$
+LANGUAGE plpgsql IMMUTABLE;
+SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT ret_setint() ON ERROR) FROM test_jsonb_mutability;
+ERROR: DEFAULT expression must not return a set
+LINE 1: SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT ret_setint(...
+ ^
+SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT b + 1 ON ERROR) FROM test_jsonb_mutability;
+ERROR: DEFAULT expression must not contain column references
+LINE 1: SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT b + 1 ON ER...
+ ^
+SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT sum(1) over() ON ERROR) FROM test_jsonb_mutability;
+ERROR: can only specify constant, non-aggregate function, or operator expression for DEFAULT
+LINE 1: SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT sum(1) over...
+ ^
+SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT (SELECT 1) ON ERROR) FROM test_jsonb_mutability;
+ERROR: can only specify constant, non-aggregate function, or operator expression for DEFAULT
+LINE 1: SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT (SELECT 1) ...
+ ^
+DROP TABLE test_jsonb_mutability;
+DROP FUNCTION ret_setint;
+-- Extension: non-constant JSON path
+SELECT JSON_EXISTS(jsonb '{"a": 123}', '$' || '.' || 'a');
+ json_exists
+-------------
+ t
+(1 row)
+
+SELECT JSON_VALUE(jsonb '{"a": 123}', '$' || '.' || 'a');
+ json_value
+------------
+ 123
+(1 row)
+
+SELECT JSON_VALUE(jsonb '{"a": 123}', '$' || '.' || 'b' DEFAULT 'foo' ON EMPTY);
+ json_value
+------------
+ foo
+(1 row)
+
+SELECT JSON_QUERY(jsonb '{"a": 123}', '$' || '.' || 'a');
+ json_query
+------------
+ 123
+(1 row)
+
+SELECT JSON_QUERY(jsonb '{"a": 123}', '$' || '.' || 'a' WITH WRAPPER);
+ json_query
+------------
+ [123]
+(1 row)
+
+-- Should fail (invalid path)
+SELECT JSON_QUERY(jsonb '{"a": 123}', 'error' || ' ' || 'error');
+ERROR: syntax error at or near " " of jsonpath input
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 1d8a414eea..910f6fe3c9 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -103,7 +103,7 @@ test: select_views portals_p2 foreign_key cluster dependency guc bitmapops combo
# ----------
# Another group of parallel tests (JSON related)
# ----------
-test: json jsonb json_encoding jsonpath jsonpath_encoding jsonb_jsonpath sqljson
+test: json jsonb json_encoding jsonpath jsonpath_encoding jsonb_jsonpath sqljson sqljson_queryfuncs
# ----------
# Another group of parallel tests
diff --git a/src/test/regress/sql/sqljson_queryfuncs.sql b/src/test/regress/sql/sqljson_queryfuncs.sql
new file mode 100644
index 0000000000..5be2d8e3f8
--- /dev/null
+++ b/src/test/regress/sql/sqljson_queryfuncs.sql
@@ -0,0 +1,427 @@
+-- JSON_EXISTS
+
+-- json arguments currently not supported
+SELECT JSON_EXISTS(NULL FORMAT JSON, '$');
+
+SELECT JSON_EXISTS(NULL::jsonb, '$');
+SELECT JSON_EXISTS(jsonb '[]', '$');
+SELECT JSON_EXISTS(JSON_OBJECT(RETURNING jsonb), '$');
+
+SELECT JSON_EXISTS(jsonb '1', '$');
+SELECT JSON_EXISTS(jsonb 'null', '$');
+SELECT JSON_EXISTS(jsonb '[]', '$');
+
+SELECT JSON_EXISTS(jsonb '1', '$.a');
+SELECT JSON_EXISTS(jsonb '1', 'strict $.a'); -- FALSE on error
+SELECT JSON_EXISTS(jsonb '1', 'strict $.a' ERROR ON ERROR);
+SELECT JSON_EXISTS(jsonb 'null', '$.a');
+SELECT JSON_EXISTS(jsonb '[]', '$.a');
+SELECT JSON_EXISTS(jsonb '[1, "aaa", {"a": 1}]', 'strict $.a'); -- FALSE on error
+SELECT JSON_EXISTS(jsonb '[1, "aaa", {"a": 1}]', 'lax $.a');
+SELECT JSON_EXISTS(jsonb '{}', '$.a');
+SELECT JSON_EXISTS(jsonb '{"b": 1, "a": 2}', '$.a');
+
+SELECT JSON_EXISTS(jsonb '1', '$.a.b');
+SELECT JSON_EXISTS(jsonb '{"a": {"b": 1}}', '$.a.b');
+SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.a.b');
+
+SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x)' PASSING 1 AS x);
+SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x)' PASSING '1' AS x);
+SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x && @ < $y)' PASSING 0 AS x, 2 AS y);
+SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x && @ < $y)' PASSING 0 AS x, 1 AS y);
+
+-- extension: boolean expressions
+SELECT JSON_EXISTS(jsonb '1', '$ > 2');
+SELECT JSON_EXISTS(jsonb '1', '$.a > 2' ERROR ON ERROR);
+
+-- JSON_VALUE
+
+-- json arguments currently not supported
+SELECT JSON_VALUE(NULL FORMAT JSON, '$');
+
+SELECT JSON_VALUE(NULL::jsonb, '$');
+
+SELECT JSON_VALUE(jsonb 'null', '$');
+SELECT JSON_VALUE(jsonb 'null', '$' RETURNING int);
+
+SELECT JSON_VALUE(jsonb 'true', '$');
+SELECT JSON_VALUE(jsonb 'true', '$' RETURNING bool);
+
+SELECT JSON_VALUE(jsonb '123', '$');
+SELECT JSON_VALUE(jsonb '123', '$' RETURNING int) + 234;
+SELECT JSON_VALUE(jsonb '123', '$' RETURNING text);
+/* jsonb bytea ??? */
+SELECT JSON_VALUE(jsonb '123', '$' RETURNING bytea ERROR ON ERROR);
+
+SELECT JSON_VALUE(jsonb '1.23', '$');
+SELECT JSON_VALUE(jsonb '1.23', '$' RETURNING int);
+SELECT JSON_VALUE(jsonb '"1.23"', '$' RETURNING numeric);
+SELECT JSON_VALUE(jsonb '"1.23"', '$' RETURNING int ERROR ON ERROR);
+
+SELECT JSON_VALUE(jsonb '"aaa"', '$');
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING text);
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING char(5));
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING char(2));
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING json);
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING jsonb);
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING json ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING jsonb ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb '"\"aaa\""', '$' RETURNING json);
+SELECT JSON_VALUE(jsonb '"\"aaa\""', '$' RETURNING jsonb);
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING int);
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING int ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING int DEFAULT 111 ON ERROR);
+SELECT JSON_VALUE(jsonb '"123"', '$' RETURNING int) + 234;
+
+SELECT JSON_VALUE(jsonb '"2017-02-20"', '$' RETURNING date) + 9;
+
+-- Test NULL checks execution in domain types
+CREATE DOMAIN sqljsonb_int_not_null AS int NOT NULL;
+SELECT JSON_VALUE(jsonb 'null', '$' RETURNING sqljsonb_int_not_null);
+SELECT JSON_VALUE(jsonb 'null', '$' RETURNING sqljsonb_int_not_null ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb 'null', '$' RETURNING sqljsonb_int_not_null DEFAULT 2 ON EMPTY ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb '1', '$.a' RETURNING sqljsonb_int_not_null DEFAULT 2 ON EMPTY ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb '1', '$.a' RETURNING sqljsonb_int_not_null DEFAULT NULL ON EMPTY ERROR ON ERROR);
+CREATE TYPE rainbow AS ENUM ('red', 'orange', 'yellow', 'green', 'blue', 'purple');
+CREATE DOMAIN rgb AS rainbow CHECK (VALUE IN ('red', 'green', 'blue'));
+SELECT JSON_VALUE('"purple"'::jsonb, 'lax $[*]' RETURNING rgb);
+SELECT JSON_VALUE('"purple"'::jsonb, 'lax $[*]' RETURNING rgb ERROR ON ERROR);
+
+SELECT JSON_VALUE(jsonb '[]', '$');
+SELECT JSON_VALUE(jsonb '[]', '$' ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb '{}', '$');
+SELECT JSON_VALUE(jsonb '{}', '$' ERROR ON ERROR);
+
+SELECT JSON_VALUE(jsonb '1', '$.a');
+SELECT JSON_VALUE(jsonb '1', 'strict $.a' ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb '1', 'strict $.a' DEFAULT 'error' ON ERROR);
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' ERROR ON EMPTY ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb '1', 'strict $.a' DEFAULT 2 ON ERROR);
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' DEFAULT 2 ON ERROR);
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' DEFAULT '2' ON ERROR);
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' NULL ON EMPTY DEFAULT '2' ON ERROR);
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' DEFAULT '2' ON EMPTY DEFAULT '3' ON ERROR);
+SELECT JSON_VALUE(jsonb '1', 'lax $.a' ERROR ON EMPTY DEFAULT '3' ON ERROR);
+
+SELECT JSON_VALUE(jsonb '[1,2]', '$[*]' ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb '[1,2]', '$[*]' DEFAULT '0' ON ERROR);
+SELECT JSON_VALUE(jsonb '[" "]', '$[*]' RETURNING int ERROR ON ERROR);
+SELECT JSON_VALUE(jsonb '[" "]', '$[*]' RETURNING int DEFAULT 2 + 3 ON ERROR);
+SELECT JSON_VALUE(jsonb '["1"]', '$[*]' RETURNING int DEFAULT 2 + 3 ON ERROR);
+SELECT JSON_VALUE(jsonb '["1"]', '$[*]' RETURNING int FORMAT JSON); -- RETURNING FORMAT not allowed
+
+-- RETUGNING pseudo-types not allowed
+SELECT JSON_VALUE(jsonb '["1"]', '$[*]' RETURNING record);
+
+SELECT
+ x,
+ JSON_VALUE(
+ jsonb '{"a": 1, "b": 2}',
+ '$.* ? (@ > $x)' PASSING x AS x
+ RETURNING int
+ DEFAULT -1 ON EMPTY
+ DEFAULT -2 ON ERROR
+ ) y
+FROM
+ generate_series(0, 2) x;
+
+SELECT JSON_VALUE(jsonb 'null', '$a' PASSING point ' (1, 2 )' AS a);
+SELECT JSON_VALUE(jsonb 'null', '$a' PASSING point ' (1, 2 )' AS a RETURNING point);
+SELECT JSON_VALUE(jsonb 'null', '$a' PASSING point ' (1, 2 )' AS a RETURNING point ERROR ON ERROR);
+
+-- Test PASSING and RETURNING date/time types
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts);
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING timestamptz);
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING timestamp);
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING date '2018-02-21 12:34:56 +10' AS ts RETURNING date);
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING time '2018-02-21 12:34:56 +10' AS ts RETURNING time);
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timetz '2018-02-21 12:34:56 +10' AS ts RETURNING timetz);
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamp '2018-02-21 12:34:56 +10' AS ts RETURNING timestamp);
+
+-- Also test RETURNING json[b]
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING json);
+SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING jsonb);
+
+-- JSON_QUERY
+
+-- json arguments currently not supported
+SELECT JSON_QUERY(NULL FORMAT JSON, '$');
+
+SELECT JSON_VALUE(NULL::jsonb, '$');
+
+SELECT
+ JSON_QUERY(js, '$'),
+ JSON_QUERY(js, '$' WITHOUT WRAPPER),
+ JSON_QUERY(js, '$' WITH CONDITIONAL WRAPPER),
+ JSON_QUERY(js, '$' WITH UNCONDITIONAL ARRAY WRAPPER),
+ JSON_QUERY(js, '$' WITH ARRAY WRAPPER)
+FROM
+ (VALUES
+ (jsonb 'null'),
+ ('12.3'),
+ ('true'),
+ ('"aaa"'),
+ ('[1, null, "2"]'),
+ ('{"a": 1, "b": [2]}')
+ ) foo(js);
+
+SELECT
+ JSON_QUERY(js, 'strict $[*]') AS "unspec",
+ JSON_QUERY(js, 'strict $[*]' WITHOUT WRAPPER) AS "without",
+ JSON_QUERY(js, 'strict $[*]' WITH CONDITIONAL WRAPPER) AS "with cond",
+ JSON_QUERY(js, 'strict $[*]' WITH UNCONDITIONAL ARRAY WRAPPER) AS "with uncond",
+ JSON_QUERY(js, 'strict $[*]' WITH ARRAY WRAPPER) AS "with"
+FROM
+ (VALUES
+ (jsonb '1'),
+ ('[]'),
+ ('[null]'),
+ ('[12.3]'),
+ ('[true]'),
+ ('["aaa"]'),
+ ('[[1, 2, 3]]'),
+ ('[{"a": 1, "b": [2]}]'),
+ ('[1, "2", null, [3]]')
+ ) foo(js);
+
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text);
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text KEEP QUOTES);
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text KEEP QUOTES ON SCALAR STRING);
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text OMIT QUOTES);
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text OMIT QUOTES ON SCALAR STRING);
+SELECT JSON_QUERY(jsonb '"aaa"', '$' OMIT QUOTES ERROR ON ERROR);
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING json OMIT QUOTES ERROR ON ERROR);
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING bytea FORMAT JSON OMIT QUOTES ERROR ON ERROR);
+
+-- Behavior when a RETURNING type has typmod != -1
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING char(2));
+SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING char(2) OMIT QUOTES);
+SELECT JSON_QUERY(jsonb '"aaa"', '$.a' RETURNING char(2) OMIT QUOTES DEFAULT 'bbb' ON EMPTY);
+SELECT JSON_QUERY(jsonb '"aaa"', '$.a' RETURNING char(2) OMIT QUOTES DEFAULT '"bbb"'::jsonb ON EMPTY);
+
+-- QUOTES behavior should not be specified when WITH WRAPPER used:
+-- Should fail
+SELECT JSON_QUERY(jsonb '[1]', '$' WITH WRAPPER OMIT QUOTES);
+SELECT JSON_QUERY(jsonb '[1]', '$' WITH WRAPPER KEEP QUOTES);
+SELECT JSON_QUERY(jsonb '[1]', '$' WITH CONDITIONAL WRAPPER KEEP QUOTES);
+SELECT JSON_QUERY(jsonb '[1]', '$' WITH CONDITIONAL WRAPPER OMIT QUOTES);
+-- Should succeed
+SELECT JSON_QUERY(jsonb '[1]', '$' WITHOUT WRAPPER OMIT QUOTES);
+SELECT JSON_QUERY(jsonb '[1]', '$' WITHOUT WRAPPER KEEP QUOTES);
+
+-- test QUOTES behavior.
+SELECT JSON_QUERY(jsonb'{"rec": "{1,2,3}"}', '$.rec' returning int[] omit quotes);
+SELECT JSON_QUERY(jsonb'{"rec": "{1,2,3}"}', '$.rec' returning int[] keep quotes);
+SELECT JSON_QUERY(jsonb'{"rec": "{1,2,3}"}', '$.rec' returning int[] keep quotes error on error);
+SELECT JSON_QUERY(jsonb'{"rec": "[1,2]"}', '$.rec' returning int4range omit quotes);
+SELECT JSON_QUERY(jsonb'{"rec": "[1,2]"}', '$.rec' returning int4range keep quotes);
+SELECT JSON_QUERY(jsonb'{"rec": "[1,2]"}', '$.rec' returning int4range keep quotes error on error);
+
+SELECT JSON_QUERY(jsonb '[]', '$[*]');
+SELECT JSON_QUERY(jsonb '[]', '$[*]' NULL ON EMPTY);
+SELECT JSON_QUERY(jsonb '[]', '$[*]' EMPTY ON EMPTY);
+SELECT JSON_QUERY(jsonb '[]', '$[*]' EMPTY ARRAY ON EMPTY);
+SELECT JSON_QUERY(jsonb '[]', '$[*]' EMPTY OBJECT ON EMPTY);
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY);
+SELECT JSON_QUERY(jsonb '[]', '$[*]' DEFAULT '"empty"' ON EMPTY);
+
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY NULL ON ERROR);
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY EMPTY ARRAY ON ERROR);
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY EMPTY OBJECT ON ERROR);
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY ERROR ON ERROR);
+SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON ERROR);
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' ERROR ON ERROR);
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' DEFAULT '"empty"' ON ERROR);
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING json);
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING json FORMAT JSON);
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING jsonb);
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING jsonb FORMAT JSON);
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING text);
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING char(10));
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING char(3));
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING text FORMAT JSON);
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING bytea);
+SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING bytea FORMAT JSON);
+
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING bytea EMPTY OBJECT ON ERROR);
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING bytea FORMAT JSON EMPTY OBJECT ON ERROR);
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING json EMPTY OBJECT ON ERROR);
+SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING jsonb EMPTY OBJECT ON ERROR);
+SELECT JSON_QUERY(jsonb '[3,4]', '$[*]' RETURNING bigint[] EMPTY OBJECT ON ERROR);
+SELECT JSON_QUERY(jsonb '"[3,4]"', '$[*]' RETURNING bigint[] EMPTY OBJECT ON ERROR);
+
+-- Coercion fails with quotes on
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int2 error on error);
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int4 error on error);
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int8 error on error);
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING bool error on error);
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING numeric error on error);
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING real error on error);
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING float8 error on error);
+-- Fine with OMIT QUOTES
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int2 omit quotes error on error);
+SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING float8 omit quotes error on error);
+
+-- RETUGNING pseudo-types not allowed
+SELECT JSON_QUERY(jsonb '[3,4]', '$[*]' RETURNING anyarray EMPTY OBJECT ON ERROR);
+
+SELECT
+ x, y,
+ JSON_QUERY(
+ jsonb '[1,2,3,4,5,null]',
+ '$[*] ? (@ >= $x && @ <= $y)'
+ PASSING x AS x, y AS y
+ WITH CONDITIONAL WRAPPER
+ EMPTY ARRAY ON EMPTY
+ ) list
+FROM
+ generate_series(0, 4) x,
+ generate_series(0, 4) y;
+
+-- record type returning with quotes behavior.
+CREATE TYPE comp_abc AS (a text, b int, c timestamp);
+SELECT JSON_QUERY(jsonb'{"rec": "(abc,42,01.02.2003)"}', '$.rec' returning comp_abc omit quotes);
+SELECT JSON_QUERY(jsonb'{"rec": "(abc,42,01.02.2003)"}', '$.rec' returning comp_abc keep quotes);
+SELECT JSON_QUERY(jsonb'{"rec": "(abc,42,01.02.2003)"}', '$.rec' returning comp_abc keep quotes error on error);
+DROP TYPE comp_abc;
+
+-- Extension: record types returning
+CREATE TYPE sqljsonb_rec AS (a int, t text, js json, jb jsonb, jsa json[]);
+CREATE TYPE sqljsonb_reca AS (reca sqljsonb_rec[]);
+
+SELECT JSON_QUERY(jsonb '[{"a": 1, "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}}, {"a": 2}]', '$[0]' RETURNING sqljsonb_rec);
+SELECT JSON_QUERY(jsonb '[{"a": "a", "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}}, {"a": 2}]', '$[0]' RETURNING sqljsonb_rec ERROR ON ERROR);
+SELECT JSON_QUERY(jsonb '[{"a": "a", "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}}, {"a": 2}]', '$[0]' RETURNING sqljsonb_rec);
+SELECT * FROM unnest((JSON_QUERY(jsonb '{"jsa": [{"a": 1, "b": ["foo"]}, {"a": 2, "c": {}}, 123]}', '$' RETURNING sqljsonb_rec)).jsa);
+SELECT * FROM unnest((JSON_QUERY(jsonb '{"reca": [{"a": 1, "t": ["foo", []]}, {"a": 2, "jb": [{}, true]}]}', '$' RETURNING sqljsonb_reca)).reca);
+
+SELECT JSON_QUERY(jsonb '[{"a": 1, "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}}, {"a": 2}]', '$[0]' RETURNING jsonpath);
+SELECT JSON_QUERY(jsonb '[{"a": 1, "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}}, {"a": 2}]', '$[0]' RETURNING jsonpath ERROR ON ERROR);
+
+-- Extension: array types returning
+SELECT JSON_QUERY(jsonb '[1,2,null,"3"]', '$[*]' RETURNING int[] WITH WRAPPER);
+SELECT JSON_QUERY(jsonb '[1,2,null,"a"]', '$[*]' RETURNING int[] WITH WRAPPER ERROR ON ERROR);
+SELECT JSON_QUERY(jsonb '[1,2,null,"a"]', '$[*]' RETURNING int[] WITH WRAPPER);
+SELECT * FROM unnest(JSON_QUERY(jsonb '[{"a": 1, "t": ["foo", []]}, {"a": 2, "jb": [{}, true]}]', '$' RETURNING sqljsonb_rec[]));
+
+-- Extension: domain types returning
+SELECT JSON_QUERY(jsonb '{"a": 1}', '$.a' RETURNING sqljsonb_int_not_null);
+SELECT JSON_QUERY(jsonb '{"a": 1}', '$.b' RETURNING sqljsonb_int_not_null);
+SELECT JSON_QUERY(jsonb '{"a": 1}', '$.b' RETURNING sqljsonb_int_not_null ERROR ON ERROR);
+
+-- Test timestamptz passing and output
+SELECT JSON_QUERY(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts);
+SELECT JSON_QUERY(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING json);
+SELECT JSON_QUERY(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING jsonb);
+
+-- Test constraints
+
+CREATE TABLE test_jsonb_constraints (
+ js text,
+ i int,
+ x jsonb DEFAULT JSON_QUERY(jsonb '[1,2]', '$[*]' WITH WRAPPER)
+ CONSTRAINT test_jsonb_constraint1
+ CHECK (js IS JSON)
+ CONSTRAINT test_jsonb_constraint2
+ CHECK (JSON_EXISTS(js::jsonb, '$.a' PASSING i + 5 AS int, i::text AS txt, array[1,2,3] as arr))
+ CONSTRAINT test_jsonb_constraint3
+ CHECK (JSON_VALUE(js::jsonb, '$.a' RETURNING int DEFAULT '12' ON EMPTY ERROR ON ERROR) > i)
+ CONSTRAINT test_jsonb_constraint4
+ CHECK (JSON_QUERY(js::jsonb, '$.a' WITH CONDITIONAL WRAPPER EMPTY OBJECT ON ERROR) < jsonb '[10]')
+ CONSTRAINT test_jsonb_constraint5
+ CHECK (JSON_QUERY(js::jsonb, '$.a' RETURNING char(5) OMIT QUOTES EMPTY ARRAY ON EMPTY) > 'a' COLLATE "C")
+);
+
+\d test_jsonb_constraints
+
+SELECT check_clause
+FROM information_schema.check_constraints
+WHERE constraint_name LIKE 'test_jsonb_constraint%'
+ORDER BY 1;
+
+SELECT pg_get_expr(adbin, adrelid)
+FROM pg_attrdef
+WHERE adrelid = 'test_jsonb_constraints'::regclass
+ORDER BY 1;
+
+INSERT INTO test_jsonb_constraints VALUES ('', 1);
+INSERT INTO test_jsonb_constraints VALUES ('1', 1);
+INSERT INTO test_jsonb_constraints VALUES ('[]');
+INSERT INTO test_jsonb_constraints VALUES ('{"b": 1}', 1);
+INSERT INTO test_jsonb_constraints VALUES ('{"a": 1}', 1);
+INSERT INTO test_jsonb_constraints VALUES ('{"a": 7}', 1);
+INSERT INTO test_jsonb_constraints VALUES ('{"a": 10}', 1);
+
+DROP TABLE test_jsonb_constraints;
+
+-- Test mutabilily of query functions
+CREATE TABLE test_jsonb_mutability(js jsonb, b int);
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a[0]'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.time()'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.date()'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.time_tz()'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.timestamp()'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.timestamp_tz()'));
+
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.date() < $.time_tz())'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.date() < $.time())'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.time() < $.time())'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.time() < $.time_tz())'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp() < $.timestamp_tz())'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp_tz() < $.timestamp_tz())'));
+
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.time() < $.datetime("HH:MI TZH"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.date() < $.datetime("HH:MI TZH"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp() < $.datetime("HH:MI TZH"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp() < $.datetime("HH:MI"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp_tz() < $.datetime("HH:MI TZH"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp_tz() < $.datetime("HH:MI"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.date() < $x' PASSING '12:34'::timetz AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.date() < $x' PASSING '1234'::int AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp(2) < $.timestamp(3))'));
+
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime()'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@ < $.datetime())'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime() < $.datetime())'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime() < $.datetime("HH:MI TZH"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime("HH:MI TZH") < $.datetime("HH:MI TZH"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime("HH:MI") < $.datetime("YY-MM-DD HH:MI"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime("HH:MI TZH") < $.datetime("YY-MM-DD HH:MI"))'));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime("HH:MI TZH") < $x' PASSING '12:34'::timetz AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime("HH:MI TZH") < $y' PASSING '12:34'::timetz AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime() < $x' PASSING '12:34'::timetz AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime() < $x' PASSING '1234'::int AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime() ? (@ == $x)' PASSING '12:34'::time AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime("YY-MM-DD") ? (@ == $x)' PASSING '2020-07-14'::date AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$[1, $.a ? (@.datetime() == $x)]' PASSING '12:34'::time AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$[1, 0 to $.a ? (@.datetime() == $x)]' PASSING '12:34'::time AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$[1, $.a ? (@.datetime("HH:MI") == $x)]' PASSING '12:34'::time AS x));
+CREATE INDEX ON test_jsonb_mutability (JSON_VALUE(js, '$' DEFAULT random()::int ON ERROR));
+
+-- DEFAULT expression
+CREATE OR REPLACE FUNCTION ret_setint() RETURNS SETOF integer AS
+$$
+BEGIN
+ RETURN QUERY EXECUTE 'select 1 union all select 1';
+END;
+$$
+LANGUAGE plpgsql IMMUTABLE;
+SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT ret_setint() ON ERROR) FROM test_jsonb_mutability;
+SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT b + 1 ON ERROR) FROM test_jsonb_mutability;
+SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT sum(1) over() ON ERROR) FROM test_jsonb_mutability;
+SELECT JSON_QUERY(js, '$' RETURNING int DEFAULT (SELECT 1) ON ERROR) FROM test_jsonb_mutability;
+DROP TABLE test_jsonb_mutability;
+DROP FUNCTION ret_setint;
+
+-- Extension: non-constant JSON path
+SELECT JSON_EXISTS(jsonb '{"a": 123}', '$' || '.' || 'a');
+SELECT JSON_VALUE(jsonb '{"a": 123}', '$' || '.' || 'a');
+SELECT JSON_VALUE(jsonb '{"a": 123}', '$' || '.' || 'b' DEFAULT 'foo' ON EMPTY);
+SELECT JSON_QUERY(jsonb '{"a": 123}', '$' || '.' || 'a');
+SELECT JSON_QUERY(jsonb '{"a": 123}', '$' || '.' || 'a' WITH WRAPPER);
+-- Should fail (invalid path)
+SELECT JSON_QUERY(jsonb '{"a": 123}', 'error' || ' ' || 'error');
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index 95ae7845d8..355c8144a2 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -1259,6 +1259,7 @@ Join
JoinCostWorkspace
JoinDomain
JoinExpr
+JsonFuncExpr
JoinHashEntry
JoinPath
JoinPathExtraData
@@ -1269,18 +1270,28 @@ JsObject
JsValue
JsonAggConstructor
JsonAggState
+JsonArgument
JsonArrayAgg
JsonArrayConstructor
JsonArrayQueryConstructor
JsonBaseObjectInfo
+JsonBehavior
+JsonBehaviorType
+JsonCoercion
JsonConstructorExpr
JsonConstructorExprState
JsonConstructorType
JsonEncoding
+JsonExpr
+JsonExprOp
+JsonExprPostEvalState
+JsonExprState
JsonFormat
JsonFormatType
JsonHashEntry
JsonIsPredicate
+JsonItemCoercion
+JsonItemType
JsonIterateStringValuesAction
JsonKeyValue
JsonLexContext
@@ -1298,6 +1309,7 @@ JsonParseContext
JsonParseErrorType
JsonPath
JsonPathBool
+JsonPathDatatypeStatus
JsonPathExecContext
JsonPathExecResult
JsonPathGinAddPathItemFunc
@@ -1310,10 +1322,15 @@ JsonPathGinPathItem
JsonPathItem
JsonPathItemType
JsonPathKeyword
+JsonPathMutableContext
JsonPathParseItem
JsonPathParseResult
JsonPathPredicateCallback
JsonPathString
+JsonPathVariable
+JsonPathVariableEvalContext
+JsonPathVarCallback
+JsonQuotes
JsonReturning
JsonScalarExpr
JsonSemAction
@@ -1330,6 +1347,7 @@ JsonValueExpr
JsonValueList
JsonValueListIterator
JsonValueType
+JsonWrapper
Jsonb
JsonbAggState
JsonbContainer
--
2.43.0
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Subject: Re: remaining sql/json patches
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