From: Richard Huxton <dev@archonet.com>
To: Yves Vindevogel <yves.vindevogel@implements.be>
Cc: pgsql-performance@postgresql.org
Subject: Re: Fwd: Updates on large tables are extremely slow
Date: Mon, 13 Jun 2005 17:02:24 +0100
Message-ID: <42ADAE10.6050204@archonet.com> (raw)
In-Reply-To: <6243ad910c02150d526b7b32d4cfef9d@implements.be>
References: <6243ad910c02150d526b7b32d4cfef9d@implements.be>
Yves Vindevogel wrote:
> I forgot cc
>
> Begin forwarded message:
>
>> From: Yves Vindevogel <yves.vindevogel@implements.be>
>> Date: Mon 13 Jun 2005 17:45:19 CEST
>> To: Tom Lane <tgl@sss.pgh.pa.us>
>> Subject: Re: [PERFORM] Updates on large tables are extremely slow
>>
>> Yes, but if I update one column, why should PG update 21 indexes ?
>> There's only one index affected !
No - all 21 are affected. MVCC creates a new row on disk.
--
Richard Huxton
Archonet Ltd
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To: pgsql-performance@postgresql.org
Cc: dev@archonet.com, yves.vindevogel@implements.be
Subject: Re: Fwd: Updates on large tables are extremely slow
In-Reply-To: <42ADAE10.6050204@archonet.com>
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