Re: Comparitive UPDATE speed

From: Andrew Sullivan <andrew(at)libertyrms(dot)info>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: Comparitive UPDATE speed
Date: 2002-10-04 18:25:23
Message-ID: 20021004142523.M949@mail.libertyrms.com
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On Fri, Oct 04, 2002 at 11:13:09AM -0700, Josh Berkus wrote:
>
> Andrew,
>
> > Have you run this with EXPLAIN ANALYSE? It will actually perform the
> > necessary steps, so it will reveal if the planner is getting
> > something wrong.
>
> Here it is:

Oops, sorry. What if you force the index use here? Just because the
planner thinks that's more expensive doesn't mean that it is.

A

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