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Create a new file executor/execGrouping.c to centralize utility routines

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shared by nodeGroup, nodeAgg, and soon nodeSubplan.
This commit is contained in:
Tom Lane
2003-01-10 23:54:24 +00:00
parent c83702606c
commit 1afac12910
12 changed files with 498 additions and 337 deletions
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27
src/include/executor/executor.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: executor.h,v 1.85 2002/12/15 21:01:34 tgl Exp $
* $Id: executor.h,v 1.86 2003/01/10 23:54:24 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -36,6 +36,31 @@ extern void ExecMarkPos(PlanState *node);
extern void ExecRestrPos(PlanState *node);
extern bool ExecSupportsMarkRestore(NodeTag plantype);
/*
* prototypes from functions in execGrouping.c
*/
extern bool execTuplesMatch(HeapTuple tuple1,
HeapTuple tuple2,
TupleDesc tupdesc,
int numCols,
AttrNumber *matchColIdx,
FmgrInfo *eqfunctions,
MemoryContext evalContext);
extern FmgrInfo *execTuplesMatchPrepare(TupleDesc tupdesc,
int numCols,
AttrNumber *matchColIdx);
extern uint32 ComputeHashFunc(Datum key, int typLen, bool byVal);
extern TupleHashTable BuildTupleHashTable(int numCols, AttrNumber *keyColIdx,
FmgrInfo *eqfunctions,
int nbuckets, Size entrysize,
MemoryContext tablecxt,
MemoryContext tempcxt);
extern TupleHashEntry LookupTupleHashEntry(TupleHashTable hashtable,
TupleTableSlot *slot,
bool *isnew);
extern TupleHashEntry ScanTupleHashTable(TupleHashTable hashtable,
TupleHashIterator *state);
/*
* prototypes from functions in execJunk.c
*/