diff -r a7a14bc57855 -r e9c04ed3290f install/schemas/upgrade/1.1.2-1.1.3-postgresql.sql
--- a/install/schemas/upgrade/1.1.2-1.1.3-postgresql.sql	Wed Jul 09 23:44:04 2008 -0400
+++ b/install/schemas/upgrade/1.1.2-1.1.3-postgresql.sql	Wed Jul 09 23:44:19 2008 -0400
@@ -10,6 +10,9 @@
   PRIMARY KEY ( key_id )
 );
 
-ALTER TABLE {{TABLE_PREFIX}}session_keys MODIFY COLUMN source_ip varchar(39) NOT NULL DEFAULT '127.0.0.1';
 ALTER TABLE {{TABLE_PREFIX}}themes DROP group_policy, ADD COLUMN group_policy varchar(9) NOT NULL DEFAULT 'allow_all', ADD CHECK ( group_policy IN ('allow_all', 'whitelist', 'blacklist') );
 
+ALTER TABLE {{TABLE_PREFIX}}session_keys ALTER COLUMN source_ip TYPE varchar(39),
+                                         ADD CHECK ( source_ip IS NOT NULL ),
+                                         ALTER COLUMN source_ip SET DEFAULT '127.0.0.1';
+