Re: many row updates

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От Richard Huxton
Тема Re: many row updates
Дата
Msg-id 43D8B1EC.4010000@archonet.com
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Ответ на many row updates  (Uroš Gruber <uros.gruber@sir-mag.com>)
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Uroš Gruber wrote:
> Hi!
>
> I have table with row named rank and some other rows. I have about
> 900.000 rows in table and I need to update
> all rows with the same value of rank, so I run update table set rank = 1;
>
> The only problem is speed. I'm waiting about 30 minutes and it's still
> running.
>
> My system is pg8.1 with one SATA HD and P43GHz

And is your disk very busy?

Has this table been updated a lot without being vacuumed regularly?

--
   Richard Huxton
   Archonet Ltd


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