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When using a junkfilter, the output tuple should NOT be stored back into

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the same tuple slot that the raw tuple came from, because that slot has
the wrong tuple descriptor.  Store it into its own slot with the correct
descriptor, instead.  This repairs problems with SPI functions seeing
inappropriate tuple descriptors --- for example, plpgsql code failing to
cope with SELECT FOR UPDATE.
This commit is contained in:
Tom Lane
2001-05-27 20:48:51 +00:00
parent a3855c5761
commit 9e7243063c
4 changed files with 50 additions and 23 deletions
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5
src/include/executor/executor.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: executor.h,v 1.57 2001/03/22 04:00:44 momjian Exp $
* $Id: executor.h,v 1.58 2001/05/27 20:48:51 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -43,7 +43,8 @@ extern void ExecRestrPos(Plan *node);
/*
* prototypes from functions in execJunk.c
*/
extern JunkFilter *ExecInitJunkFilter(List *targetList, TupleDesc tupType);
extern JunkFilter *ExecInitJunkFilter(List *targetList, TupleDesc tupType,
TupleTableSlot *slot);
extern void ExecFreeJunkFilter(JunkFilter *junkfilter);
extern bool ExecGetJunkAttribute(JunkFilter *junkfilter, TupleTableSlot *slot,
char *attrName, Datum *value, bool *isNull);