From fb30ac54e6c5d816f72d2bfff17c487b30e0ba79 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Thu, 3 Nov 2005 17:45:29 +0000
Subject: [PATCH] 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.
---
src/backend/optimizer/plan/setrefs.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/backend/optimizer/plan/setrefs.c b/src/backend/optimizer/plan/setrefs.c
index 9f078924c25..e6f97fa0815 100644
--- a/src/backend/optimizer/plan/setrefs.c
+++ b/src/backend/optimizer/plan/setrefs.c
@@ -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
--
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