--- userpoints.install.original	2010-05-07 14:46:58.000000000 -0400
+++ userpoints.install	2010-05-07 14:43:39.000000000 -0400
@@ -49,6 +49,8 @@ function userpoints_schema() {
     'indexes' => array(
       'last_update' => array('last_update'),
       'uid_tid' => array('uid', 'tid'),
+      //Optional as in update_6013
+      'points' => array('points'),
     ),
   );
   
@@ -281,3 +283,10 @@ function userpoints_update_6012() {
   db_add_index($ret, 'userpoints_txn', 'status_expired_expiry', array('status', 'expired', 'expirydate'));
   return $ret;
 }
+
+function userpoints_update_6013() {
+  $ret = array();
+  //Optional: useful if you are comparing users points (eg: ranking)..
+  db_add_index($ret, 'userpoints', 'points', array('points'));
+  return $ret;
+}