Index: trunk/kernel/constants.php
===================================================================
diff -u -r3553 -r4287
--- trunk/kernel/constants.php	(.../constants.php)	(revision 3553)
+++ trunk/kernel/constants.php	(.../constants.php)	(revision 4287)
@@ -2,7 +2,8 @@
 
 	define('HAVING_FILTER', 1);
 	define('WHERE_FILTER', 2);
-
+	define('AGGREGATE_FILTER', 3);
+	
 	define('FLT_TYPE_AND',	'AND');
 	define('FLT_TYPE_OR',	'OR');