From fb8bd1dbec8ae8be90d7aad27aa8ca30ef3d144c Mon Sep 17 00:00:00 2001
From: Ryan Boren <ryan@git.wordpress.org>
Date: Tue, 16 Jan 2007 22:37:15 +0000
Subject: [PATCH] Fix SQL error when excluding empty cat. fixes #3598

git-svn-id: https://develop.svn.wordpress.org/trunk@4754 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/query.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/wp-includes/query.php b/wp-includes/query.php
index 4a931ec1ca..cd19c4c740 100644
--- a/wp-includes/query.php
+++ b/wp-includes/query.php
@@ -804,6 +804,8 @@ class WP_Query {
 				}
 				if ( strlen($out_posts) > 0 )
 					$out_cats = " AND ID NOT IN ($out_posts)";
+				else
+					$out_cats = '';
 			}
 			$whichcat = $in_cats . $out_cats;
 			$groupby = "{$wpdb->posts}.ID";