> I would have thought that duplications would become equally likely at the > 16,777,216 mark. Yes, at that point you're as likely to get a duplicate as a unique one--every time you do it. You're likely to see your first duplicate long before that point. In fact, it would be extremely unlikely to get to that point without having generated any duplicates. -- Scott Ribe scott_ribe@xxxxxxxxxxxxxxx http://www.killerbytes.com/ (303) 722-0567 voice -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general