From 5ceb13c8a12320a44fa211cf0ba32b1641270aeb Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Thu, 25 Mar 2010 15:50:10 +0000
Subject: [PATCH] Fix ginint4_queryextract() to actually do what it was
intended to do for an unsatisfiable query, such as indexcol && empty_array.
It should return -1 to tell GIN no scan is required; but silly typo disabled
the logic for that, resulting in unnecessary "GIN indexes do not support
whole-index scans" error. Per bug report from Jeff Trout.
Back-patch to 8.3 where the logic was introduced.
---
contrib/intarray/_int_gin.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/contrib/intarray/_int_gin.c b/contrib/intarray/_int_gin.c
index 2bf8fc54bb4..375ff3ae25e 100644
--- a/contrib/intarray/_int_gin.c
+++ b/contrib/intarray/_int_gin.c
@@ -1,5 +1,5 @@
/*
- * $PostgreSQL: pgsql/contrib/intarray/_int_gin.c,v 1.10 2009/06/11 14:48:51 momjian Exp $
+ * $PostgreSQL: pgsql/contrib/intarray/_int_gin.c,v 1.11 2010/03/25 15:50:10 tgl Exp $
*/
#include "postgres.h"
@@ -65,7 +65,7 @@ ginint4_queryextract(PG_FUNCTION_ARGS)
}
}
- if (nentries == 0)
+ if (*nentries == 0)
{
switch (strategy)
{
--
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