Index: database.pgsql
===================================================================
RCS file: /cvs/drupal/drupal/database/database.pgsql,v
retrieving revision 1.168
diff -u -p -F^f -r1.168 database.pgsql
--- database.pgsql	30 Jan 2006 10:48:37 -0000	1.168
+++ database.pgsql	12 Feb 2006 06:41:14 -0000
@@ -599,7 +599,7 @@ CREATE TABLE search_total (
 --
 
 CREATE TABLE sessions (
-  uid integer not null,
+  uid integer NOT NULL default 0,
   sid varchar(32) NOT NULL default '',
   hostname varchar(128) NOT NULL default '',
   timestamp integer NOT NULL default '0',
Index: updates.inc
===================================================================
RCS file: /cvs/drupal/drupal/database/updates.inc,v
retrieving revision 1.195
diff -u -p -F^f -r1.195 updates.inc
--- updates.inc	12 Feb 2006 05:34:34 -0000	1.195
+++ updates.inc	12 Feb 2006 06:41:14 -0000
@@ -1616,3 +1616,11 @@ function system_update_172() {
   }
   return array('#finished' => $_SESSION['system_update_172'] / $_SESSION['system_update_172_max']);
 }
+
+function system_update_173() {
+  $ret = array();
+  if ($GLOBALS['db_type'] == 'pgsql') {
+    $ret[] = update_sql('ALTER TABLE {sessions} ALTER COLUMN uid SET DEFAULT 0');
+  }
+  return $ret;
+}