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Thinking further, it seems we had better also copy down resorigtbl/resorigcol 

to ensure that SubqueryScan elimination doesn't change the behavior of
reporting of original column sources.
This commit is contained in:
Tom Lane 2005-11-03 17:45:29 +00:00
parent abf293e155
commit fb30ac54e6
1 changed files with 6 additions and 3 deletions
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9
src/backend/optimizer/plan/setrefs.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/plan/setrefs.c,v 1.116 2005/11/03 17:34:03 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/plan/setrefs.c,v 1.117 2005/11/03 17:45:29 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -382,9 +382,10 @@ set_subqueryscan_references(SubqueryScan *plan, List *rtable)
result->initPlan);
/*
* we also have to transfer the SubqueryScan's result-column names
* We also have to transfer the SubqueryScan's result-column names
* into the subplan, else columns sent to client will be improperly
* labeled if this is the topmost plan level.
* labeled if this is the topmost plan level. Copy the "source
* column" information too.
*/
forboth(lp, plan->scan.plan.targetlist, lc, result->targetlist)
{
@ -392,6 +393,8 @@ set_subqueryscan_references(SubqueryScan *plan, List *rtable)
TargetEntry *ctle = (TargetEntry *) lfirst(lc);
ctle->resname = ptle->resname;
ctle->resorigtbl = ptle->resorigtbl;
ctle->resorigcol = ptle->resorigcol;
}
}
else