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-rw-r--r--src/backend/utils/adt/ruleutils.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index 92dd03775e3..b921bcb5ecf 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -3,7 +3,7 @@
* back to source text
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.207.2.5 2006/01/26 17:08:26 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/ruleutils.c,v 1.207.2.6 2006/10/01 17:23:51 tgl Exp $
*
* This software is copyrighted by Jan Wieck - Hamburg.
*
@@ -3458,14 +3458,18 @@ get_rule_expr(Node *node, deparse_context *context,
* the optimizer's simplify_boolean_equality() may
* have reduced this to just "CaseTestExpr" or
* "NOT CaseTestExpr", for which we have to show
- * "TRUE" or "FALSE".
+ * "TRUE" or "FALSE". Also, depending on context
+ * the original CaseTestExpr might have been reduced
+ * to a Const (but we won't see "WHEN Const").
*/
if (IsA(w, OpExpr))
{
Node *rhs;
Assert(IsA(linitial(((OpExpr *) w)->args),
- CaseTestExpr));
+ CaseTestExpr) ||
+ IsA(linitial(((OpExpr *) w)->args),
+ Const));
rhs = (Node *) lsecond(((OpExpr *) w)->args);
get_rule_expr(rhs, context, false);
}