RE: Slow access with PG 7.0

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От Rainer Mager
Тема RE: Slow access with PG 7.0
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Msg-id NEBBJBCAFMMNIHGDLFKGMEEBCIAA.rmager@vgkk.com
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Ответ на Re: Slow access with PG 7.0  (Alfred Perlstein <bright@wintelcom.net>)
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Can someone elaborate on this more? Is this only PHP4 related? If this
improves performance why not always have it on? What are the downsides?

Thanks,

--Rainer


-----Original Message-----
From: pgsql-admin-owner@postgresql.org
[mailto:pgsql-admin-owner@postgresql.org]On Behalf Of Alfred Perlstein
Sent: Thursday, December 07, 2000 2:25 AM
To: Jean-Arthur Silve
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Slow access with PG 7.0


* Jean-Arthur Silve <jeanarthur@eurovox.fr> [001206 04:55] wrote:
> Thanks for your help
> pg_exec($dbh, "set enable_seqscan off;");
> seems resolve my problem...
>
> I look at the docs, but I didn't understand very well what is the use of
> this variable ?

run:

explain <your query>

with and without the option, you'll see.


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