On Tue, May 3, 2011 at 8:03 PM, Greg Smith <greg@xxxxxxxxxxxxxxx> wrote: > With a uniqueness constraint in this situation, the unexpected data--row > with a non unique MAC--will be rejected and possibly lost when the insertion > happens. You say that's a good thing, plenty of people will say that's the > worst possible thing that can happen. But remember the original discussion is on using these are PK/FK. That's where things get really ugly. I can change my data model to not have a unique MAC or to do something to make them unique (add IP or something) much more easily if they're NOT a PK/FK. That's the real issue to me. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general