From d7050cb68cf996dd3c7ffc9bc5984c9b53ed9f77 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Tue, 31 Mar 1998 04:44:35 +0000
Subject: Merge rename name page into alter table.  Fix UNION with DISTINCT or
 ORDER BY bug.

---
 src/backend/parser/parse_clause.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'src/backend/parser/parse_clause.c')

diff --git a/src/backend/parser/parse_clause.c b/src/backend/parser/parse_clause.c
index 9bd664c4ee3..30be8335351 100644
--- a/src/backend/parser/parse_clause.c
+++ b/src/backend/parser/parse_clause.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/parser/parse_clause.c,v 1.14 1998/03/18 15:47:51 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/parser/parse_clause.c,v 1.15 1998/03/31 04:43:53 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -313,7 +313,13 @@ transformSortClause(ParseState *pstate,
 				{
 					SortClause *sortcl = lfirst(s);
 
-					if (sortcl->resdom == tlelt->resdom)
+					/*
+					 *	We use equal() here because we are called for UNION
+					 *	from the optimizer, and at that point, the sort clause
+					 *	resdom pointers don't match the target list resdom
+					 *	pointers
+					 */
+					if (equal(sortcl->resdom, tlelt->resdom))
 						break;
 					s = lnext(s);
 				}
-- 
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