Re: INDEX and JOINs

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От Martijn van Oosterhout
Тема Re: INDEX and JOINs
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Msg-id 20071026130221.GD24394@svana.org
обсуждение исходный текст
Ответ на Re: INDEX and JOINs  (Reg Me Please <regmeplease@gmail.com>)
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On Fri, Oct 26, 2007 at 02:39:28PM +0200, Reg Me Please wrote:
> > >----------------------------------------------------- Hash Join
> > > (cost=3.95..382140.91 rows=274709 width=91) (actual
> > > time=1.929..57713.305 rows=92 loops=1)
> > >    Hash Cond: (t_dati.camp_id = t_campi.camp_id)
>
> prove=# \d t_dati

Ok, my suggestion would be to run it with "enable_seqscan=off" and if
that is indeed faster, then try reducing random_page_cost.

Have a nice day,
--
Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.

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