put DISTINCT in sub-queries where derived merge does not work.

bt5/erp5_dms/SkinTemplateItem/portal_skins/erp5_dms/Base_zGetImplicitPredecessorValueList.xml

@@ -71,7 +71,7 @@ FROM\n
     @current_path:=IF(@current_reference = reference, @current_path, path) AS path,\n
     @current_reference:=reference AS reference\n
   FROM (\n
-    SELECT\n
+    SELECT DISTINCT\n
       reference,\n
       path,\n
       catalog.uid,\n

bt5/erp5_dms/SkinTemplateItem/portal_skins/erp5_dms/Base_zGetImplicitSuccessorValueList.xml

@@ -71,7 +71,7 @@ FROM\n
     @current_path:=IF(@current_reference = reference, @current_path, path) AS path,\n
     @current_reference:=reference AS reference\n
   FROM (\n
-    SELECT\n
+    SELECT DISTINCT\n
       reference,\n
       path,\n
       catalog.uid,\n

bt5/erp5_web/SkinTemplateItem/portal_skins/erp5_web/WebSection_zGetDocumentValueList.xml

@@ -80,7 +80,7 @@ kw</string> </value>
     catalog.*\n
   FROM\n
     (\n
-      SELECT\n
+      SELECT DISTINCT\n
         catalog.uid,\n
         catalog.path,\n
         catalog.int_index,\n

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Resource_zGetMovementHistoryList.xml

@@ -487,7 +487,7 @@ SELECT \n
   @running_total_price := IFNULL(q1.total_price, 0) + \n
             @running_total_price AS running_total_price\n
 FROM (\n
-SELECT\n
+SELECT DISTINCT\n
   catalog.path as path,\n
   catalog.uid as uid,\n
   catalog.relative_url as relative_url,\n