Index: trunk/ippTools/src/magictool.c
===================================================================
--- trunk/ippTools/src/magictool.c	(revision 32272)
+++ trunk/ippTools/src/magictool.c	(revision 32283)
@@ -131,5 +131,5 @@
     PXOPT_LOOKUP_BOOL(simple, config->args, "-simple", false);
     PXOPT_LOOKUP_BOOL(pretend, config->args, "-pretend", false);
-
+    PXOPT_LOOKUP_BOOL(multidiff, config->args, "-multidiff", false);
     psMetadata *diffWhere = psMetadataAlloc(); // WHERE conditions for diffRuns
     PXOPT_COPY_STR(config->args, diffWhere, "-diff_label", "diffRun.label", "==");
@@ -142,5 +142,11 @@
     // Get list of exposures ready to magic
     {
-        psString query = pxDataGet("magictool_definebyquery_select.sql");
+        psString query;
+        if (multidiff) {
+	  query = pxDataGet("magictool_definebyquery_select_multidiff.sql");
+        }
+        else {
+	  query = pxDataGet("magictool_definebyquery_select.sql");
+        }
         if (!query) {
             psError(PXTOOLS_ERR_SYS, false, "failed to retreive SQL statement");
Index: trunk/ippTools/src/magictoolConfig.c
===================================================================
--- trunk/ippTools/src/magictoolConfig.c	(revision 32272)
+++ trunk/ippTools/src/magictoolConfig.c	(revision 32283)
@@ -61,4 +61,5 @@
     psMetadataAddBool(definebyqueryArgs, PS_LIST_TAIL, "-available", 0, "process what's immediately available?", false);
     psMetadataAddBool(definebyqueryArgs, PS_LIST_TAIL, "-rerun", 0, "generate new run even if existing?", false);
+    psMetadataAddBool(definebyqueryArgs, PS_LIST_TAIL, "-multidiff", 0, "allow multiple diffs to be magicked with the same label", false);
     psMetadataAddBool(definebyqueryArgs, PS_LIST_TAIL, "-simple", 0, "use the simple output format", false);
     psMetadataAddBool(definebyqueryArgs, PS_LIST_TAIL, "-pretend", 0, "list results but do not queue", false);