From: Laszlo Nagy <gandalf@shopzeus.com>
To: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Slow table update
Date: Mon, 22 Dec 2008 12:34:32 +0100
Message-ID: <494F7B48.6070204@shopzeus.com> (raw)
In-Reply-To: <494F749A.5090603@shopzeus.com>
References: <494F749A.5090603@shopzeus.com>
Laszlo Nagy wrote:
> SQL:
>
> update product set sz_category_id=null where am_style_kw1 is not null
> and sz_category_id is not null
Hmm, this query:
select count(*) from product where am_style_kw1 is not null and
sz_category_id is not null and sz_category_id<>4809
opens in 10 seconds. The update would not finish in 2600 seconds. I
don't understand.
L
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To: pgsql-performance@postgresql.org
Cc: gandalf@shopzeus.com
Subject: Re: Slow table update
In-Reply-To: <494F7B48.6070204@shopzeus.com>
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