Robert Haas <robertmh...@gmail.com> writes: > The only disadvantage I see of just documenting this is that someone > might write a user-defined index opclass that works like this, and > they won't be able to use this until at least 9.1 (or at least, not > without patching the source).
I don't actually think that anyone's very likely to write a <>-like index operator. It's approximately useless to use an index for such a query. Or, to put it differently: if nobody's done that in the past twenty years, why is it likely to happen before 9.1? regards, tom lane -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers