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Commit8a1468a

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committed
Restructure planner's handling of inheritance. Rather than processing
inheritance trees on-the-fly, which pretty well constrained us to consideringonly one way of planning inheritance, expand inheritance sets during theplanner prep phase, and build a side data structure that can be consultedlater to find which RTEs are members of which inheritance sets. As proof ofconcept, use the data structure to plan joins against inheritance sets moreefficiently: we can now use indexes on the set members in inner-indexscanjoins. (The generated plans could be improved further, but it'll take someexecutor changes.) This data structure will also support handling UNION ALLsubqueries in the same way as inheritance sets, but that aspect of it isn'tfinished yet.
1 parent097df38 commit8a1468a

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18 files changed

+1045
-511
lines changed

18 files changed

+1045
-511
lines changed

‎src/backend/nodes/copyfuncs.c

Lines changed: 23 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -15,7 +15,7 @@
1515
* Portions Copyright (c) 1994, Regents of the University of California
1616
*
1717
* IDENTIFICATION
18-
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.324 2005/12/28 01:29:59 tgl Exp $
18+
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.325 2006/01/31 21:39:23 tgl Exp $
1919
*
2020
*-------------------------------------------------------------------------
2121
*/
@@ -1322,6 +1322,25 @@ _copyInClauseInfo(InClauseInfo *from)
13221322
returnnewnode;
13231323
}
13241324

1325+
/*
1326+
* _copyAppendRelInfo
1327+
*/
1328+
staticAppendRelInfo*
1329+
_copyAppendRelInfo(AppendRelInfo*from)
1330+
{
1331+
AppendRelInfo*newnode=makeNode(AppendRelInfo);
1332+
1333+
COPY_SCALAR_FIELD(parent_relid);
1334+
COPY_SCALAR_FIELD(child_relid);
1335+
COPY_SCALAR_FIELD(parent_reltype);
1336+
COPY_SCALAR_FIELD(child_reltype);
1337+
COPY_NODE_FIELD(col_mappings);
1338+
COPY_NODE_FIELD(translated_vars);
1339+
COPY_SCALAR_FIELD(parent_reloid);
1340+
1341+
returnnewnode;
1342+
}
1343+
13251344
/* ****************************************************************
13261345
*parsenodes.h copy functions
13271346
* ****************************************************************
@@ -2945,6 +2964,9 @@ copyObject(void *from)
29452964
caseT_InClauseInfo:
29462965
retval=_copyInClauseInfo(from);
29472966
break;
2967+
caseT_AppendRelInfo:
2968+
retval=_copyAppendRelInfo(from);
2969+
break;
29482970

29492971
/*
29502972
* VALUE NODES

‎src/backend/nodes/equalfuncs.c

Lines changed: 18 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -18,7 +18,7 @@
1818
* Portions Copyright (c) 1994, Regents of the University of California
1919
*
2020
* IDENTIFICATION
21-
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.260 2005/12/28 01:29:59 tgl Exp $
21+
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.261 2006/01/31 21:39:23 tgl Exp $
2222
*
2323
*-------------------------------------------------------------------------
2424
*/
@@ -644,6 +644,20 @@ _equalInClauseInfo(InClauseInfo *a, InClauseInfo *b)
644644
return true;
645645
}
646646

647+
staticbool
648+
_equalAppendRelInfo(AppendRelInfo*a,AppendRelInfo*b)
649+
{
650+
COMPARE_SCALAR_FIELD(parent_relid);
651+
COMPARE_SCALAR_FIELD(child_relid);
652+
COMPARE_SCALAR_FIELD(parent_reltype);
653+
COMPARE_SCALAR_FIELD(child_reltype);
654+
COMPARE_NODE_FIELD(col_mappings);
655+
COMPARE_NODE_FIELD(translated_vars);
656+
COMPARE_SCALAR_FIELD(parent_reloid);
657+
658+
return true;
659+
}
660+
647661

648662
/*
649663
* Stuff from parsenodes.h
@@ -1984,6 +1998,9 @@ equal(void *a, void *b)
19841998
caseT_InClauseInfo:
19851999
retval=_equalInClauseInfo(a,b);
19862000
break;
2001+
caseT_AppendRelInfo:
2002+
retval=_equalAppendRelInfo(a,b);
2003+
break;
19872004
caseT_List:
19882005
caseT_IntList:
19892006
caseT_OidList:

‎src/backend/nodes/outfuncs.c

Lines changed: 21 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.266 2005/12/28 01:29:59 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/nodes/outfuncs.c,v 1.267 2006/01/31 21:39:23 tgl Exp $
1212
*
1313
* NOTES
1414
* Every node type that can appear in stored rules' parsetrees *must*
@@ -1178,6 +1178,7 @@ _outPlannerInfo(StringInfo str, PlannerInfo *node)
11781178
WRITE_NODE_FIELD(full_join_clauses);
11791179
WRITE_NODE_FIELD(oj_info_list);
11801180
WRITE_NODE_FIELD(in_info_list);
1181+
WRITE_NODE_FIELD(append_rel_list);
11811182
WRITE_NODE_FIELD(query_pathkeys);
11821183
WRITE_NODE_FIELD(group_pathkeys);
11831184
WRITE_NODE_FIELD(sort_pathkeys);
@@ -1204,8 +1205,8 @@ _outRelOptInfo(StringInfo str, RelOptInfo *node)
12041205
WRITE_NODE_FIELD(cheapest_unique_path);
12051206
WRITE_UINT_FIELD(relid);
12061207
WRITE_ENUM_FIELD(rtekind,RTEKind);
1207-
WRITE_UINT_FIELD(min_attr);
1208-
WRITE_UINT_FIELD(max_attr);
1208+
WRITE_INT_FIELD(min_attr);
1209+
WRITE_INT_FIELD(max_attr);
12091210
WRITE_NODE_FIELD(indexlist);
12101211
WRITE_UINT_FIELD(pages);
12111212
WRITE_FLOAT_FIELD(tuples,"%.0f");
@@ -1295,6 +1296,20 @@ _outInClauseInfo(StringInfo str, InClauseInfo *node)
12951296
WRITE_NODE_FIELD(sub_targetlist);
12961297
}
12971298

1299+
staticvoid
1300+
_outAppendRelInfo(StringInfostr,AppendRelInfo*node)
1301+
{
1302+
WRITE_NODE_TYPE("APPENDRELINFO");
1303+
1304+
WRITE_UINT_FIELD(parent_relid);
1305+
WRITE_UINT_FIELD(child_relid);
1306+
WRITE_OID_FIELD(parent_reltype);
1307+
WRITE_OID_FIELD(child_reltype);
1308+
WRITE_NODE_FIELD(col_mappings);
1309+
WRITE_NODE_FIELD(translated_vars);
1310+
WRITE_OID_FIELD(parent_reloid);
1311+
}
1312+
12981313
/*****************************************************************************
12991314
*
13001315
*Stuff from parsenodes.h.
@@ -2048,6 +2063,9 @@ _outNode(StringInfo str, void *obj)
20482063
caseT_InClauseInfo:
20492064
_outInClauseInfo(str,obj);
20502065
break;
2066+
caseT_AppendRelInfo:
2067+
_outAppendRelInfo(str,obj);
2068+
break;
20512069

20522070
caseT_CreateStmt:
20532071
_outCreateStmt(str,obj);

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