Index: trunk/ippTools/share/Makefile.am
===================================================================
--- trunk/ippTools/share/Makefile.am	(revision 17618)
+++ trunk/ippTools/share/Makefile.am	(revision 17712)
@@ -45,4 +45,5 @@
 	difftool_todiffskyfile.sql \
 	difftool_revertdiffskyfile.sql \
+	difftool_queue.sql \
 	flatcorr_create_tmp_chiprundone.sql \
 	flatcorr_completely_processed_chiprun.sql \
Index: trunk/ippTools/share/difftool_queue.sql
===================================================================
--- trunk/ippTools/share/difftool_queue.sql	(revision 17712)
+++ trunk/ippTools/share/difftool_queue.sql	(revision 17712)
@@ -0,0 +1,21 @@
+SELECT
+        stackRun.skycell_id,
+        stackRun.tess_id,
+        stackRun.stack_id,
+        warpSkyfile.warp_id
+FROM stackSumSkyfile
+JOIN stackRun
+        USING(stack_id)
+JOIN stackInputSkyfile
+        USING(stack_id)
+JOIN warpSkyfile
+        USING(warp_id,tess_id,skycell_id)
+LEFT JOIN diffInputSkyfile
+        ON diffInputSkyfile.stack_id = stackRun.stack_id
+        OR diffInputSkyfile.warp_id = warpSkyfile.warp_id
+WHERE
+        stackSumSkyfile.fault = 0
+        AND warpSkyfile.fault = 0
+        AND stackRun.state = 'stop'
+        AND diffInputSkyfile.stack_id IS NULL
+        AND diffInputSkyfile.warp_id IS NULL