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Message-ID: <b41c75520511240523t3372661fw@mail.gmail.com>
Date: Thu, 24 Nov 2005 14:23:38 +0100
From: Claus Guttesen <kometen@gmail.com>
To: Bealach-na Bo <bealach_na_bo@hotmail.com>
Subject: Re: Very slow queries - please help.
Cc: pgsql-performance@postgresql.org
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> Typical query
> ------------
>
> SELECT n.name
> FROM node n
> WHERE n.name
> LIKE '56x%'
> AND n.type=3D'H'
> AND n.usage=3D'TEST'
> AND n.node_id
> NOT IN
> (select n.node_id
> FROM job_log j
> INNER JOIN node n
> ON j.node_id =3D n.node_id
> WHERE n.name
> LIKE '56x%'
> AND n.type=3D'H'
> AND n.usage=3D'TEST'
> AND j.job_name =3D 'COPY FILES'
> AND j.job_start >=3D '2005-11-14 00:00:00'
> AND (j.job_stop <=3D '2005-11-22 09:31:10' OR j.job_stop IS NULL))
> ORDER BY n.name

Do you have any indexes?

regards
Claus