diff -r 6018617c55ab roundup/backends/back_postgresql.py
--- a/roundup/backends/back_postgresql.py	Sun May 05 00:21:27 2013 +0200
+++ b/roundup/backends/back_postgresql.py	Wed May 08 00:45:19 2013 +0200
@@ -286,8 +286,17 @@
 class PostgresqlClass:
     order_by_null_values = '(%s is not NULL)'
 
+    def insensitive_like(self):
+        """
+        Most databases treat the LIKE operator as a case insensitive search.
+        For Postgresql and Oracle LIKE is case sensitive, but they have ILIKE
+        that is case insensitive.
+        """
+        return 'ILIKE'
+
 class Class(PostgresqlClass, rdbms_common.Class):
     pass
 class IssueClass(PostgresqlClass, rdbms_common.IssueClass):