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ExecReScanGroup() forgot to clear grpstate->grp_firstTuple,

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thereby guaranteeing wrong results from a rescanned Group node.
This commit is contained in:
Tom Lane 1999-07-11 01:57:32 +00:00
parent ebc3cc7efa
commit 9cbd349bcd
1 changed files with 7 additions and 1 deletions
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8
src/backend/executor/nodeGroup.c
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@ -13,7 +13,7 @@
* columns. (ie. tuples from the same group are consecutive)
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/nodeGroup.c,v 1.26 1999/05/25 16:08:41 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/nodeGroup.c,v 1.27 1999/07/11 01:57:32 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -271,6 +271,7 @@ ExecInitGroup(Group *node, EState *estate, Plan *parent)
node->grpstate = grpstate;
grpstate->grp_useFirstTuple = FALSE;
grpstate->grp_done = FALSE;
grpstate->grp_firstTuple = NULL;
/*
* assign node's base id and create expression context
@ -423,6 +424,11 @@ ExecReScanGroup(Group *node, ExprContext *exprCtxt, Plan *parent)
grpstate->grp_useFirstTuple = FALSE;
grpstate->grp_done = FALSE;
if (grpstate->grp_firstTuple != NULL)
{
pfree(grpstate->grp_firstTuple);
grpstate->grp_firstTuple = NULL;
}
if (((Plan *) node)->lefttree &&
((Plan *) node)->lefttree->chgParam == NULL)