On Thu, May 13, 2010 at 08:08:31PM -0400, Tom Lane wrote: > David Fetter <david@xxxxxxxxxx> writes: > > On Thu, May 13, 2010 at 12:33:08AM -0400, Tom Lane wrote: > >> I'm surprised no one has yet suggested an ENUM type. > > > I didn't suggest it because I didn't know about it, but because > > I've found ENUM to be a trap for the unwary. > > > Very seldom are people absolutely certain that they'll have one > > particular list of things forever. The list may grow or shrink, > > or the order may change, and in those cases where the list changes > > somehow, ENUM causes more problems than it solves. > > Well, the inability to change the list of values is certainly an > unpleasant limitation, but is it so fatal that we should hide the > feature from people who could possibly use it? I think not. It's enough of a foot-gun that I would not even mention it to start with, except to discuss its problems. Cheers, David. -- David Fetter <david@xxxxxxxxxx> http://fetter.org/ Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter Skype: davidfetter XMPP: david.fetter@xxxxxxxxx iCal: webcal://www.tripit.com/feed/ical/people/david74/tripit.ics Remember to vote! Consider donating to Postgres: http://www.postgresql.org/about/donate -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
