After doing an analyze on the database, it improved a lot :)
On Mon, Feb 1, 2010 at 12:13 PM, Scott Marlowe <scott.marl...@gmail.com> wrote: > On Sun, Jan 31, 2010 at 6:09 PM, Dave Clements <dclement...@gmail.com> wrote: >> I did the re-analyze serveral times, using the command: >> >> ANALYZE tablename; >> >> Is there any other command as well or another way to do that? > > It's important that the stats target get increased as well, it looks > like you're not getting enough buckets to get a good estimate of rows > to be returned for various conditions. > > # show default_statistics_target ; > default_statistics_target > --------------------------- > 10 > > # alter database smarlowe set default_statistics_target=200; > ALTER DATABASE > # analyze; > > Then run the explain analyze again and see if your row estimates are > closer and if the plan changes. > -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
