Index: trunk/ippTools/share/Makefile.am
===================================================================
--- trunk/ippTools/share/Makefile.am	(revision 12261)
+++ trunk/ippTools/share/Makefile.am	(revision 12262)
@@ -13,4 +13,7 @@
 	detselect_search.sql \
 	detselect_select.sql \
+	difftool_inputskyfile.sql \
+	difftool_skyfile.sql \
+	difftool_todiffskyfile.sql \
 	regtool_find_unprocessed_exp.sql \
 	regtool_find_unprocessed_imfile.sql \
Index: trunk/ippTools/share/difftool_inputskyfile.sql
===================================================================
--- trunk/ippTools/share/difftool_inputskyfile.sql	(revision 12262)
+++ trunk/ippTools/share/difftool_inputskyfile.sql	(revision 12262)
@@ -0,0 +1,22 @@
+SELECT
+    warpSkyfile.*,
+    diffInputSkyfile.template,
+    rawExp.camera
+FROM diffRun
+JOIN diffInputSkyfile
+    USING(diff_id)
+JOIN warpSkyfile
+    ON  diffInputSkyfile.warp_id    = warpSkyfile.warp_id
+    AND diffInputSkyfile.skycell_id = warpSkyfile.skycell_id
+    AND diffInputSkyfile.tess_id    = warpSkyfile.tess_id
+JOIN warpInputExp
+    ON diffInputSkyfile.warp_id = warpInputExp.warp_id
+JOIN chipProcessedExp
+    ON warpInputExp.cam_id = camProcessedExp.cam_id
+JOIN camProcessedExp
+    ON camProcessedExp.chip_id = chipProcessedExp.chip_id
+JOIN rawExp
+    ON chipProcessedExp.exp_tag = rawExp.exp_tag
+WHERE
+    diffRun.state = 'run'
+
Index: trunk/ippTools/share/difftool_skyfile.sql
===================================================================
--- trunk/ippTools/share/difftool_skyfile.sql	(revision 12262)
+++ trunk/ippTools/share/difftool_skyfile.sql	(revision 12262)
@@ -0,0 +1,10 @@
+SELECT
+    diffRun.skycell_id,
+    diffRun.tess_id,
+    diffSkyfile.*
+FROM diffRun
+JOIN diffSkyfile
+    USING(diff_id)
+WHERE
+    diffRun.state = 'run'
+
Index: trunk/ippTools/share/difftool_todiffskyfile.sql
===================================================================
--- trunk/ippTools/share/difftool_todiffskyfile.sql	(revision 12262)
+++ trunk/ippTools/share/difftool_todiffskyfile.sql	(revision 12262)
@@ -0,0 +1,16 @@
+SELECT DISTINCT
+    diffRun.diff_id,
+    diffRun.workdir
+FROM diffRun
+JOIN diffInputSkyfile
+    USING(diff_id)
+JOIN warpSkyfile
+    ON  diffInputSkyfile.warp_id    = warpSkyfile.warp_id
+    AND diffInputSkyfile.skycell_id = warpSkyfile.skycell_id
+    AND diffInputSkyfile.tess_id    = warpSkyfile.tess_id
+LEFT JOIN diffSkyfile
+    ON diffInputSkyfile.diff_id = diffSkyfile.diff_id
+WHERE
+  diffRun.state = 'run'
+  AND diffSkyfile.diff_id IS NULL
+