On 26 March 2013 05:04, Darren Duncan <dar...@darrenduncan.net> wrote: > On 2013.03.25 1:17 AM, Albe Laurenz wrote: >> The desired effect can be had today with a unique index: >> >> CREATE TABLE singleton (id integer); >> CREATE UNIQUE INDEX singleton_idx ON singleton((1)); > > Okay, that is helpful, and less of a kludge than what I was doing, but it is > still a kludge compared to what I'm proposing, which I see as elegant. >
FWIW I think an index on (TRUE) expresses the intention more clearly than an index on () would. I don't have any objection to the purely logical sense of the zero-attribute key, but it's hard to see the pragmatic value. Cheers, BJ -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
