2009/12/8 Lennin Caro <lennin.c...@yahoo.com> > > From: niraj patel <npa...@gridsolv.com> > > Subject: Re: [PERFORM] Optimizing Bitmap Heap Scan. > To: "Grzegorz Jaśkiewicz" <gryz...@gmail.com> > Cc: pgsql-performance@postgresql.org > Date: Tuesday, December 8, 2009, 1:50 PM > > Hi gryzman, > > I have run vacuum full analyze on the cmrules tables. The version of pstgres > is 8.2.13. How should I change stats to 100 ? > > Thanks > ________________________________ > From: Grzegorz Jaśkiewicz <gryz...@gmail.com> > To: niraj patel <npa...@gridsolv.com> > Cc: pgsql-performance@postgresql.org > Sent: Tue, 8 December, 2009 7:12:49 PM > Subject: Re: [PERFORM] Optimizing Bitmap Heap Scan. > > it looks like it might choose wrong plan, cos it gets the stats wrong. > Try increasing number of stats to 100. > Btw, what version it is ? > > > in psql > mydb=# set default_statistics_target = 100;
That's only going to affect the current session. To change it permanently, edit postgresql.conf and do pg_ctl reload. ...Robert -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
