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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/nodeIndexscan.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/nodeIndexscan.c')
| -rw-r--r-- | src/backend/executor/nodeIndexscan.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/backend/executor/nodeIndexscan.c b/src/backend/executor/nodeIndexscan.c index 4371fc1a280..60aa72b8219 100644 --- a/src/backend/executor/nodeIndexscan.c +++ b/src/backend/executor/nodeIndexscan.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/executor/nodeIndexscan.c,v 1.118 2006/12/23 00:43:09 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/executor/nodeIndexscan.c,v 1.119 2006/12/26 19:26:45 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -168,6 +168,8 @@ ExecIndexReScan(IndexScanState *node, ExprContext *exprCtxt) econtext = node->iss_RuntimeContext; /* context for runtime keys */ scanrelid = ((IndexScan *) node->ss.ps.plan)->scan.scanrelid; + node->ss.ps.ps_TupFromTlist = false; + if (econtext) { /* @@ -476,6 +478,8 @@ ExecInitIndexScan(IndexScan *node, EState *estate, int eflags) */ ExecAssignExprContext(estate, &indexstate->ss.ps); + indexstate->ss.ps.ps_TupFromTlist = false; + /* * initialize child expressions * |