Re: Where to find information on the new HOT tables?

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От Alvaro Herrera
Тема Re: Where to find information on the new HOT tables?
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Msg-id 20080208163048.GE31022@alvh.no-ip.org
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Ответ на Re: Where to find information on the new HOT tables?  (Bruce Momjian <bruce@momjian.us>)
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Bruce Momjian escribió:

> The release note item says we can now reclaim without vacuum:
>
>        "UPDATE"s and "DELETE"s leave dead tuples behind, as do failed
>        "INSERT"s. Previously only "VACUUM" could reclaim
>        space taken by dead tuples. With HOT dead tuple space can be
>        automatically reclaimed at the time of "INSERT" or ...
>
> so it seems logical that the need to vacuum would change.  We can add
> an explicit sentence about that to the release notes.

Ok, but the problem is not only realizing that you need to change it;
you also need to know what to.

--
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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