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Support for subselects.

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ExecReScan for nodeAgg, nodeHash, nodeHashjoin, nodeNestloop and nodeResult.
Fixed ExecReScan for nodeMaterial.
Get rid of #ifdef INDEXSCAN_PATCH.
Get rid of ExecMarkPos and ExecRestrPos in nodeNestloop.
This commit is contained in:
Vadim B. Mikheev
1998-02-13 03:26:53 +00:00
parent 13637df458
commit 1a105cefbd
15 changed files with 677 additions and 153 deletions
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18
src/backend/executor/nodeAgg.c
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@ -676,3 +676,21 @@ aggGetAttr(TupleTableSlot *slot,
return result;
}
void
ExecReScanAgg(Agg *node, ExprContext *exprCtxt, Plan *parent)
{
AggState *aggstate = node->aggstate;
ExprContext *econtext = aggstate->csstate.cstate.cs_ExprContext;
aggstate->agg_done = FALSE;
MemSet(econtext->ecxt_values, 0, sizeof(Datum) * length(node->aggs));
MemSet(econtext->ecxt_nulls, 0, length(node->aggs));
/*
* if chgParam of subnode is not null then plan
* will be re-scanned by first ExecProcNode.
*/
if (((Plan*) node)->lefttree->chgParam == NULL)
ExecReScan (((Plan*) node)->lefttree, exprCtxt, (Plan *) node);
}