add constant for DQ_WHERE

diff --git a/lib/Data/Query/Constants.pm b/lib/Data/Query/Constants.pm
index 7512cfd..2b8a7fc 100644 (file)
--- a/lib/Data/Query/Constants.pm
+++ b/lib/Data/Query/Constants.pm
@@ -13,6 +13,7 @@ use constant +{
     DQ_LITERAL => 'Literal',
     DQ_JOIN => 'Join',
     DQ_ORDER => 'Order',
+    DQ_WHERE => 'Where',
   ))
 };