Hi In Oracle I can use the NOVALIDATE for constraints... like this ALTER TABLE employee ADD CONSTRAINT emp_ck CHECK (married IN ('Y','N')) NO VALIDATE; When the table is already populated this will be faster. Can you do the same in Postgresql? Thanks Sharmila -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general