From: "sarlav kumar" <sarlavk@xxxxxxxxx> > [Tom:] > >You might get some results from increasing the > >statistics target for merchant_purchase.merchant_id. > > Do I have to use vacuum analyze to update the statistics? If so, I have already tried that and it doesn't seem to help. alter table merchant_purchase alter column merchant_id set statistics 500; analyze merchant_purchase; > > >If that doesn't help, I'd think about reducing random_page_cost a little bit. > > I am sorry, I am not aware of what random_page_cost is, as I am new to Postgres. What does it signify and how do I reduce random_page_cost? set random_page_cost = 3; explain analyse <query> if it is an improvement, consider setting the value in your postgresql.conf, but remember that this may affect other queries too. gnari
