Hi everyone, Today I needed a feature like $subject. The use case was: UPDATE foo SET bar = bar + 1 WHERE id=$1, but I wanted to only do it when bar was 0. In order to give the user an informative error message, I also needed to distinguish the two cases: a row with id = $1 doesn't exist, and bar was 0, so I couldn't put bar != 0 into the WHERE clause. This time I got around it by using RETURNING bar and checking that it was 1 on the client side, but I can come up with other cases where you can't do that.
Comments? Regards, Marko Tiikkaja -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
