Index: includes/date_api_filter_handler.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/date/includes/date_api_filter_handler.inc,v
retrieving revision 1.1.2.47
diff -u -p -r1.1.2.47 date_api_filter_handler.inc
--- includes/date_api_filter_handler.inc	12 Aug 2010 22:32:58 -0000	1.1.2.47
+++ includes/date_api_filter_handler.inc	14 Sep 2010 20:00:20 -0000
@@ -423,6 +423,9 @@ class date_api_filter_handler extends vi
     $this->get_query_fields();
     if (!empty($this->query_fields)) {
       foreach ((array) $this->query_fields as $query_field) {
+        if (!empty($this->related_table_alias)) {
+          $query_field['field']['fullname'] = $this->related_table_alias . "." . $query_field['field']['field_name'];
+        }
         $field = $query_field['field'];
         $sql = '';
         $sql_parts = array();