am Wed, dem 23.04.2008, um 9:58:10 +0200 mailte A. Kretschmer folgendes: > > Query A (two queries) > > > > select distinct moment.mid from moment,timecard where parent = 45 and > > (pid=17 and timecard.mid = moment.mid) order by moment.mid; > > select distinct moment.mid from moment,timecard where parent = 45 and (pbar > > = 0) order by moment.mid; > > > > Query B (combining the two with OR) > > > > select distinct moment.mid from moment,timecard where parent = 45 and > > ((pid=17 and timecard.mid = moment.mid) or (pbar = 0)) order by moment.mid;
Thanks to depesz on #postgresql (irc-channel): Query A, the second query: there are no join between the 2 tables. Mistake? Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header) GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
