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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2006-12-26 19:26:46 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2006-12-26 19:26:46 +0000 |
| commit | 68996463d405a0e3e35f81371ffebbbaff7c1f63 (patch) | |
| tree | 1393ccac93c28d38880e78594e78da571185ea99 /src/backend/executor/nodeSubqueryscan.c | |
| parent | fccf99f0c81ac2ad9af6e6fa746375c39ca7ab0b (diff) | |
| download | postgresql-68996463d405a0e3e35f81371ffebbbaff7c1f63.tar.gz postgresql-68996463d405a0e3e35f81371ffebbbaff7c1f63.zip | |
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.
Diffstat (limited to 'src/backend/executor/nodeSubqueryscan.c')
| -rw-r--r-- | src/backend/executor/nodeSubqueryscan.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/backend/executor/nodeSubqueryscan.c b/src/backend/executor/nodeSubqueryscan.c index 22e148ec6c9..45dfdb838d5 100644 --- a/src/backend/executor/nodeSubqueryscan.c +++ b/src/backend/executor/nodeSubqueryscan.c @@ -12,7 +12,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/executor/nodeSubqueryscan.c,v 1.32 2006/10/04 00:29:53 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/executor/nodeSubqueryscan.c,v 1.33 2006/12/26 19:26:46 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -294,4 +294,5 @@ ExecSubqueryReScan(SubqueryScanState *node, ExprContext *exprCtxt) MemoryContextSwitchTo(oldcontext); node->ss.ss_ScanTupleSlot = NULL; + node->ss.ps.ps_TupFromTlist = false; } |