Index: /Users/aaron/Sites/gpca/htdocs/sites/all/modules/views/includes/query.inc
===================================================================
--- /Users/aaron/Sites/gpca/htdocs/sites/all/modules/views/includes/query.inc	(revision 4624)
+++ /Users/aaron/Sites/gpca/htdocs/sites/all/modules/views/includes/query.inc	(working copy)
@@ -938,7 +938,7 @@
     }
 
     if ($has_aggregate || $this->groupby) {
-      $groupby = "GROUP BY " . implode(', ', array_unique(array_merge($this->groupby, $non_aggregates))) . "\n";
+      $groupby = "GROUP BY " . implode(', ', array_unique($this->groupby)) . "\n";
       if ($this->having) {
         $having = $this->condition_sql('having');
       }