From f03729c62178890fab5ab33d721c70d3f474c512 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Mon, 9 Nov 1998 02:49:13 +0000
Subject: [PATCH] Fix for NOT in where clause causing crash.
---
src/backend/optimizer/path/clausesel.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/src/backend/optimizer/path/clausesel.c b/src/backend/optimizer/path/clausesel.c
index 8a0536c7bbe..0bdca62893f 100644
--- a/src/backend/optimizer/path/clausesel.c
+++ b/src/backend/optimizer/path/clausesel.c
@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/optimizer/path/clausesel.c,v 1.13 1998/09/01 04:29:29 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/optimizer/path/clausesel.c,v 1.14 1998/11/09 02:49:13 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -254,6 +254,11 @@ compute_selec(Query *root, List *clauses, List *or_selectivities)
*/
s1 = 0.1;
}
+ else if (not_clause((Node *) clause))
+ {
+ /* negate this baby */
+ return 1 - compute_selec(root, ((Expr *)clause)->args, or_selectivities);
+ }
else if (is_subplan((Node *) clause))
{
--
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