On Sat, Jul 21, 2012 at 5:10 PM, Claudio Freire <klaussfre...@gmail.com> wrote: > <ioan...@anatec.com> wrote: >> (feed_all_y2012m07.ship_pos_messages join >> ais_server.ship_objects on (ship_pos_messages.obj_id = ship_objects.obj_id)) >> on (message_copies.msg_id = ship_pos_messages.msg_id) > > It's this part of the query that's taking 3.2 hours. > > Move the filtered message_copies to a CTE, and the filtered > ship_pos_messages join to another CTE. That should (in my experience) > get you better performance.
Btw... did you try the hash thing? -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
