diff -r 03d98646d57c -r a504a7840915 schemas/_regproc.postgres.sql
--- a/schemas/_regproc.postgres.sql	Tue Apr 21 17:12:36 2015 +0200
+++ b/schemas/_regproc.postgres.sql	Wed Apr 15 22:08:08 2015 +0200
@@ -11,6 +11,7 @@
 $$ LANGUAGE SQL;;
 
 
+DROP FUNCTION IF EXISTS cw_array_append_unique (anyarray, anyelement) CASCADE;
 CREATE FUNCTION cw_array_append_unique (anyarray, anyelement) RETURNS anyarray AS $$
     SELECT array_append($1, (SELECT $2 WHERE $2 <> ALL($1)))
 $$ LANGUAGE SQL;;