From f0f73b316d3341c76ce776fd3f21bb7d1617570d Mon Sep 17 00:00:00 2001
From: "Thomas G. Lockhart" <lockhart@fourpalms.org>
Date: Mon, 13 Sep 1999 04:14:56 +0000
Subject: [PATCH] Allow CASE statement to contain *only* untyped result clauses
or nulls. Almost worked before, but forgot one place to check. Reported by
Tatsuo Ishii. Still does not do the right thing if inserting into a
non-string target column. Should look for a type coersion later, but
doesn't.
---
src/backend/parser/parse_expr.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/backend/parser/parse_expr.c b/src/backend/parser/parse_expr.c
index a2280a74511..ee9d3077283 100644
--- a/src/backend/parser/parse_expr.c
+++ b/src/backend/parser/parse_expr.c
@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.57 1999/08/25 23:21:34 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.58 1999/09/13 04:14:56 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -410,7 +410,8 @@ transformExpr(ParseState *pstate, Node *expr, int precedence)
* only bother with conversion if not NULL and
* different type...
*/
- if (wtype && (wtype != ptype))
+ if (wtype && (wtype != UNKNOWNOID)
+ && (wtype != ptype))
{
if (can_coerce_type(1, &wtype, &ptype))
{
--
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