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Changed ExecConstraints() and ExecRelCheck() to cache the constraints

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qualification expression trees in the execution state. Prevents from
memory exhaustion on INSERT, UPDATE or COPY to tables that have CHECK
constraints. Speedup against the variant using freeObject() is more than
factor 2.

Jan
This commit is contained in:
Jan Wieck
1999-02-07 16:17:14 +00:00
parent dd4a357dc9
commit ef590e101e
4 changed files with 27 additions and 14 deletions
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5
src/include/executor/executor.h
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@@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: executor.h,v 1.28 1998/11/27 19:33:32 vadim Exp $
* $Id: executor.h,v 1.29 1999/02/07 16:17:12 wieck Exp $
*
*-------------------------------------------------------------------------
*/
@@ -85,7 +85,8 @@ extern HeapTuple ExecRemoveJunk(JunkFilter *junkfilter, TupleTableSlot *slot);
extern TupleDesc ExecutorStart(QueryDesc *queryDesc, EState *estate);
extern TupleTableSlot *ExecutorRun(QueryDesc *queryDesc, EState *estate, int feature, int count);
extern void ExecutorEnd(QueryDesc *queryDesc, EState *estate);
extern void ExecConstraints(char *caller, Relation rel, HeapTuple tuple);
extern void ExecConstraints(char *caller, Relation rel, HeapTuple tuple,
EState *estate);
#ifdef QUERY_LIMIT
extern int ExecutorLimit(int limit);
extern int ExecutorGetLimit(void);