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[PATCH 01/10] Introduce RelOptInfo->notnullattrs attribute
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* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v35 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

---
 src/backend/optimizer/plan/initsplan.c | 10 ++++++++++
 src/backend/optimizer/util/plancat.c   | 10 ++++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 3 files changed, 22 insertions(+)

diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--tbesu4k6dthoevcy
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v8-0002-Introuduce-RelOptInfo.uniquekeys-attribute.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH 01/10] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.30.2


--------------F495F6B18672582269F00FF9
Content-Type: text/x-patch; charset=UTF-8;
 name="0002-review-20210317.patch"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
 filename="0002-review-20210317.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH 01/10] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.30.2


--------------F495F6B18672582269F00FF9
Content-Type: text/x-patch; charset=UTF-8;
 name="0002-review-20210317.patch"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
 filename="0002-review-20210317.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v37 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index b399592ff8..754f6d64f6 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1009,6 +1009,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1065,6 +1066,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index f9d0d67aa7..bdd4876a84 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 3dd16b9ad5..925f2eac3f 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -708,6 +708,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--snesplnlompos6d4
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v37-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index d73ac562eb..37b4223adb 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -998,6 +998,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1054,6 +1055,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index 02f813cebd..d27167dc76 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -829,6 +829,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index c5947fa418..eebabcfccf 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -480,6 +481,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 86405a274e..0d61f04d27 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -718,6 +718,8 @@ typedef struct RelOptInfo
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
 	uint32		amflags;		/* Bitmask of optional features supported by
 								 * the table AM */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.26.2


--yh7cw345mbttadjz
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v38-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute
@ 2020-05-03 14:37 一挃 <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: 一挃 @ 2020-05-03 14:37 UTC (permalink / raw)

The notnullattrs is calculated from catalog and run-time query. That
infomation is translated to child relation as well for partitioned
table.
---
 src/backend/optimizer/path/allpaths.c  | 31 ++++++++++++++++++++++++++
 src/backend/optimizer/plan/initsplan.c | 10 +++++++++
 src/backend/optimizer/util/plancat.c   | 10 +++++++++
 src/include/nodes/pathnodes.h          |  2 ++
 4 files changed, 53 insertions(+)

diff --git a/src/backend/optimizer/path/allpaths.c b/src/backend/optimizer/path/allpaths.c
index 6da0dcd61c..484dab0a1a 100644
--- a/src/backend/optimizer/path/allpaths.c
+++ b/src/backend/optimizer/path/allpaths.c
@@ -1005,6 +1005,7 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 		RelOptInfo *childrel;
 		ListCell   *parentvars;
 		ListCell   *childvars;
+		int i = -1;
 
 		/* append_rel_list contains all append rels; ignore others */
 		if (appinfo->parent_relid != parentRTindex)
@@ -1061,6 +1062,36 @@ set_append_rel_size(PlannerInfo *root, RelOptInfo *rel,
 								   (Node *) rel->reltarget->exprs,
 								   1, &appinfo);
 
+		/* Copy notnullattrs. */
+		while ((i = bms_next_member(rel->notnullattrs, i)) > 0)
+		{
+			AttrNumber attno = i + FirstLowInvalidHeapAttributeNumber;
+			AttrNumber child_attno;
+			if (attno == 0)
+			{
+				/* Whole row is not null, so must be same for child */
+				childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+														attno - FirstLowInvalidHeapAttributeNumber);
+				break;
+			}
+			if (attno < 0 )
+				/* no need to translate system column */
+				child_attno = attno;
+			else
+			{
+				Node * node = list_nth(appinfo->translated_vars, attno - 1);
+				if (!IsA(node, Var))
+					/* This may happens at UNION case, like (SELECT a FROM t1 UNION SELECT a + 3
+					 * FROM t2) t and we know t.a is not null
+					 */
+					continue;
+				child_attno = castNode(Var, node)->varattno;
+			}
+
+			childrel->notnullattrs = bms_add_member(childrel->notnullattrs,
+													child_attno - FirstLowInvalidHeapAttributeNumber);
+		}
+
 		/*
 		 * We have to make child entries in the EquivalenceClass data
 		 * structures as well.  This is needed either if the parent
diff --git a/src/backend/optimizer/plan/initsplan.c b/src/backend/optimizer/plan/initsplan.c
index e978b491f6..95b1b14cd3 100644
--- a/src/backend/optimizer/plan/initsplan.c
+++ b/src/backend/optimizer/plan/initsplan.c
@@ -830,6 +830,16 @@ deconstruct_recurse(PlannerInfo *root, Node *jtnode, bool below_outer_join,
 		{
 			Node	   *qual = (Node *) lfirst(l);
 
+			/* Set the not null info now */
+			ListCell	*lc;
+			List		*non_nullable_vars = find_nonnullable_vars(qual);
+			foreach(lc, non_nullable_vars)
+			{
+				Var *var = lfirst_node(Var, lc);
+				RelOptInfo *rel = root->simple_rel_array[var->varno];
+				rel->notnullattrs = bms_add_member(rel->notnullattrs,
+												   var->varattno - FirstLowInvalidHeapAttributeNumber);
+			}
 			distribute_qual_to_rels(root, qual,
 									false, below_outer_join, JOIN_INNER,
 									root->qual_security_level,
diff --git a/src/backend/optimizer/util/plancat.c b/src/backend/optimizer/util/plancat.c
index 25545029d7..0b2f9d398a 100644
--- a/src/backend/optimizer/util/plancat.c
+++ b/src/backend/optimizer/util/plancat.c
@@ -117,6 +117,7 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	Relation	relation;
 	bool		hasindex;
 	List	   *indexinfos = NIL;
+	int			i;
 
 	/*
 	 * We need not lock the relation since it was already locked, either by
@@ -463,6 +464,15 @@ get_relation_info(PlannerInfo *root, Oid relationObjectId, bool inhparent,
 	if (inhparent && relation->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 		set_relation_partition_info(root, rel, relation);
 
+	Assert(rel->notnullattrs == NULL);
+	for(i = 0; i < relation->rd_att->natts; i++)
+	{
+		FormData_pg_attribute attr = relation->rd_att->attrs[i];
+		if (attr.attnotnull)
+			rel->notnullattrs = bms_add_member(rel->notnullattrs,
+											   attr.attnum - FirstLowInvalidHeapAttributeNumber);
+	}
+
 	table_close(relation, NoLock);
 
 	/*
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 485d1b06c9..9e3ebd488a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -709,6 +709,8 @@ typedef struct RelOptInfo
 	PlannerInfo *subroot;		/* if subquery */
 	List	   *subplan_params; /* if subquery */
 	int			rel_parallel_workers;	/* wanted number of parallel workers */
+	/* Not null attrs, start from -FirstLowInvalidHeapAttributeNumber */
+	Bitmapset		*notnullattrs;
 
 	/* Information about foreign tables and foreign joins */
 	Oid			serverid;		/* identifies server for the table or join */
-- 
2.21.0


--op7mf2i72xk5yu7c
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
 filename="v36-0002-Introduce-UniqueKey-attributes-on-RelOptInfo-str.patch"



^ permalink  raw  reply  [nested|flat] 48+ messages in thread

* Re: coupling of index and table access methods
@ 2024-10-02 05:07 Aleksey Demakov <[email protected]>
  0 siblings, 0 replies; 48+ messages in thread

From: Aleksey Demakov @ 2024-10-02 05:07 UTC (permalink / raw)
  To: pgsql-hackers

As far as I see a possible way to do this is to add two optional
functions to table AM interface:

char * (*default_index_am)(void) ;
bool (*validate_index_am)(char *);

If the first one is not provided then DEFAULT_INDEX_TYPE, that is
"btree", has to be used instead. If the second one is not provided
then this as if it always returned true.

But in other places DEFAULT_INDEX_TYPE should be replaced with
invocation of (table_am->default_index_am)(). This is not always
possible directly, e.g. we don't yet have the table_am here:

access_method_clause:
            USING name                                { $$ = $2; }
            | /*EMPTY*/                                { $$ =
DEFAULT_INDEX_TYPE; }
        ;

So in places like this some placeholder has to be used instead which
would be replaced with a real thing at some later point.

Regards,
Aleksey

On Tue, Oct 1, 2024 at 4:51 PM Aleksey Demakov <[email protected]> wrote:
>
> Hi hackers,
>
> My extension introduces a new table access method together with an
> index access method. Specifically, these AMs work with in-memory data.
>
> I would like to make a CREATE TABLE request with PRIMARY KEY, UNIQUE
> constraints etc, to pick my in-memory index AM over default btree when
> the table is created using my in-memory table AM. Also it might make
> sense to forbid using other index AM for CREATE INDEX requests against
> an in-memory table.
>
> It seems that this is not possible now without modifying the psql
> core. What might be the best way to accomplish this?
>
> Also if I implement such a thing would anybody else be interested in
> it? Is there any sense to publish it?
>
> Regards,
> Aleksey






^ permalink  raw  reply  [nested|flat] 48+ messages in thread

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2020-05-03 14:37 [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
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2020-05-03 14:37 [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
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2020-05-03 14:37 [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
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2020-05-03 14:37 [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
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2020-05-03 14:37 [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
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2020-05-03 14:37 [PATCH v38 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2020-05-03 14:37 [PATCH v36 1/6] Introduce RelOptInfo->notnullattrs attribute 一挃 <[email protected]>
2024-10-02 05:07 Re: coupling of index and table access methods Aleksey Demakov <[email protected]>

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