"Kevin Grittner" <kevin.gritt...@wicourts.gov> writes: >> Tom Lane <t...@sss.pgh.pa.us> wrote: >>> Personally my advice is to avoid USING: it wasn't one of the SQL >>> committee's better ideas. > There's no query you can write with USING that you can't write in a > longer form with ON; but a query of moderate complexity can become > significantly shorter with USING, and thus easier to understand and > less prone to bugs than the ON form.
If USING (x) actually were exactly equivalent to ON (a.x = b.x), I'd be less annoyed with it. But it isn't; the committee just couldn't resist the urge to decorate it with some dubious additional behaviors. regards, tom lane -- Sent via pgsql-bugs mailing list (pgsql-bugs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-bugs