From 2247700f24ae6858ace3de11ea88ec45f43d5dd7 Mon Sep 17 00:00:00 2001
From: Jean-Philippe Lang <jp_lang@yahoo.fr>
Date: Wed, 23 Jan 2008 20:07:17 +0000
Subject: [PATCH] Fixed: Incorrect filtering for unset values when using 'is
 not' filter.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1098 e93f8b46-1217-0410-a6f0-8f06a7374b81
---
 app/models/query.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/models/query.rb b/app/models/query.rb
index 3a1b5a19e..adfd5f42a 100644
--- a/app/models/query.rb
+++ b/app/models/query.rb
@@ -300,7 +300,7 @@ class Query < ActiveRecord::Base
       when "="
         sql = sql + "#{db_table}.#{db_field} IN (" + v.collect{|val| "'#{connection.quote_string(val)}'"}.join(",") + ")"
       when "!"
-        sql = sql + "#{db_table}.#{db_field} NOT IN (" + v.collect{|val| "'#{connection.quote_string(val)}'"}.join(",") + ")"
+        sql = sql + "(#{db_table}.#{db_field} IS NULL OR #{db_table}.#{db_field} NOT IN (" + v.collect{|val| "'#{connection.quote_string(val)}'"}.join(",") + "))"
       when "!*"
         sql = sql + "#{db_table}.#{db_field} IS NULL"
       when "*"