Re: very slow simple query - outer join makes it quicker

On Mon, 2004-04-19 at 08:26, Gerard Isdell wrote:
> Thank, that has worked.
>
> I've been running VACUUM regularly and thought  that would have done it.
>
> Obviously the FULL makes a big difference

It shouldn't. That FULL makes a significant difference says that you're
not running regular VACUUM frequently enough and/or your fsm_* settings
are too low.

> -----Original Message-----
> From: Rod Taylor <pg@rbt.ca>
> To: gerard.isdell@kinetic.co.uk
> Cc: Postgresql Performance <pgsql-performance@postgresql.org>
> Date: Mon, 19 Apr 2004 08:01:15 -0400
> Subject: Re: [PERFORM] very slow simple query - outer join makes it quicker
>
> > > There are other tables, such as the messages table, that have 10s of
> > > thousands of rows and they return records much more quickly.
> >
> > > There must be something seriously wrong for simple queries like this
> > to take
> > > so long.
> >
> > Have you run VACUUM recently?
> >
> > If not, run VACUUM FULL against the users table and see if that makes a
> > difference.
> >
>
>
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