1
0
mirror of https://github.com/postgres/postgres.git synced 2025-07-03 20:02:46 +03:00

Repair bug #2839: the various ExecReScan functions need to reset

ps_TupFromTlist in plan nodes that make use of it.  This was being done
correctly in join nodes and Result nodes but not in any relation-scan nodes.
Bug would lead to bogus results if a set-returning function appeared in the
targetlist of a subquery that could be rescanned after partial execution,
for example a subquery within EXISTS().  Bug has been around forever :-(
... surprising it wasn't reported before.
This commit is contained in:
Tom Lane
2006-12-26 19:26:46 +00:00
parent fccf99f0c8
commit 68996463d4
8 changed files with 27 additions and 8 deletions

View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/nodeFunctionscan.c,v 1.40 2006/06/27 02:51:39 tgl Exp $
* $PostgreSQL: pgsql/src/backend/executor/nodeFunctionscan.c,v 1.41 2006/12/26 19:26:45 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -317,6 +317,7 @@ void
ExecFunctionReScan(FunctionScanState *node, ExprContext *exprCtxt)
{
ExecClearTuple(node->ss.ps.ps_ResultTupleSlot);
node->ss.ps.ps_TupFromTlist = false;
/*
* If we haven't materialized yet, just return.