Index: trunk/ippTools/share/difftool_skyfile.sql
===================================================================
--- trunk/ippTools/share/difftool_skyfile.sql	(revision 21088)
+++ trunk/ippTools/share/difftool_skyfile.sql	(revision 21189)
@@ -6,5 +6,6 @@
     stack1,
     warp2,
-    stack2
+    stack2,
+    exp_id
 FROM diffRun
 JOIN diffSkyfile