> I've tried Aaron's suggestion of the GROUP BY and I don't know much about > it, but it ran for around 17 hours and still going (it had a dedicated Dual > Xeon 3.0GHz box under RHEL4 running it!)
Maybe, this query that you are trying to run is a good candidate for a "Materialize View". http://archives.postgresql.org/pgsql-performance/2004-02/msg00279.php Also before you run your query you might want to see the explain plan is. Perhap it is using a sequencial scan in a place where an index can improve query preformance. ---------------------------(end of broadcast)--------------------------- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
