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From: Yves Vindevogel <yves.vindevogel@implements.be>
To: pgsql-performance@postgresql.org
Subject: Re: Updates on large tables are extremely slow
Date: Mon, 13 Jun 2005 18:45:59 +0200
Message-ID: <93fcaa35413e2059526ab3aa562a17dd@implements.be> (raw)
In-Reply-To: <42ADAE10.6050204@archonet.com>
References: <6243ad910c02150d526b7b32d4cfef9d@implements.be>
	<42ADAE10.6050204@archonet.com>

Ok, if all 21 are affected, I can understand the problem.
But allow me to say that this is a "functional error"

On 13 Jun 2005, at 18:02, Richard Huxton wrote:

> 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
>
>
Met vriendelijke groeten,
Bien à vous,
Kind regards,

Yves Vindevogel
Implements


Mail: yves.vindevogel@implements.be  - Mobile: +32 (478) 80 82 91

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First they ignore you.  Then they laugh at you.  Then they fight you.  
Then you win.
Mahatma Ghandi.

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