Index: views_query.inc
===================================================================
--- views_query.inc	(revision 482)
+++ views_query.inc	(working copy)
@@ -82,6 +82,7 @@ function _views_view_build_filters(&$que
     $filterinfo = $filters[$filter['field']]; // shortcut
     if (!$filterinfo['field']) {
       $fieldbits = explode('.', $filter['field']);
+      $filterinfo['table'] = $fieldbits[0];
       $filterinfo['field'] = $fieldbits[1];
     }