Index: trunk/ippTools/share/difftool_definestackstack_part0.sql
===================================================================
--- trunk/ippTools/share/difftool_definestackstack_part0.sql	(revision 34443)
+++ trunk/ippTools/share/difftool_definestackstack_part0.sql	(revision 41681)
@@ -26,7 +26,7 @@
      	   skycell_id,
 	   filter
-) AS template ON stackRun.filter = template.filter 
-              AND stackRun.tess_id = template.tess_id 
-	      AND stackRun.skycell_id = template.skycell_id 
+) AS template ON stackRun.tess_id = template.tess_id 
+  	      AND stackRun.skycell_id = template.skycell_id 
+	      @FILT0_QUERY@  -- include filter constraint if requested
 LEFT JOIN (
      SELECT