On Mon, 2012-06-04 at 11:56 -0400, Bruce Momjian wrote: > I get your point about COUNT(*) really counting rows, not values, but > why doesn't GROUP BY then skip nulls?
A while ago, I came to the conclusion that applying logic to extrapolate the behavior of NULL is a bad idea: http://thoughts.davisjeff.com/2009/08/02/what-is-the-deal-with-nulls/ Jose was not wrong about the inconsistency between UNIQUE and GROUP BY. But the answer is that "we do it that way because the standard says so". And that's a good reason. Regards, Jeff Davis -- Sent via pgsql-bugs mailing list (pgsql-bugs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-bugs
