Skip site navigation (1) Skip section navigation (2)

Re: How can I make PostgreSQL to select another quey plan?

From: Sean Davis <sdavis2(at)mail(dot)nih(dot)gov>
To: Yangyang <yangyangbm(at)gmail(dot)com>
Cc: "pgsql-novice(at)postgresql(dot)org" <pgsql-novice(at)postgresql(dot)org>
Subject: Re: How can I make PostgreSQL to select another quey plan?
Date: 2011-11-30 15:57:43
Message-ID: CANeAVB=d_z6mTrsMkPu+NttccZS_MgH9+AFSuxy61ru7fZy=PA@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-novice
On Wed, Nov 30, 2011 at 10:51 AM, Yangyang <yangyangbm(at)gmail(dot)com> wrote:

> HI, dear all
> I'm trying to force the database to select another query plan for a
> query, rather than the optimal one.
> I changed query tuning related parameters, but the query plan stays
> the same. Although the costs for nodes changed correspondingly,
> What parameters can I modify to force the DB to select another plan?
> Any hints will be helpful.
>

What is the database structure, query, and plan?  What do you want to have
changed?

Sean

In response to

Responses

pgsql-novice by date

Next:From: YangyangDate: 2011-11-30 16:07:14
Subject: Re: How can I make PostgreSQL to select another quey plan?
Previous:From: YangyangDate: 2011-11-30 15:51:09
Subject: How can I make PostgreSQL to select another quey plan?

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group