Re: remove flatfiles.c

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От Alvaro Herrera
Тема Re: remove flatfiles.c
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Msg-id 20090902025846.GD7243@alvh.no-ip.org
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Ответ на Re: remove flatfiles.c  (Robert Haas <robertmhaas@gmail.com>)
Ответы Re: remove flatfiles.c  (Robert Haas <robertmhaas@gmail.com>)
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Robert Haas escribió:
> On Tue, Sep 1, 2009 at 7:42 PM, Tom Lane<tgl@sss.pgh.pa.us> wrote:

> > But trying to VACUUM FULL that table is going to be horridly painful
> > too, and you'll still have bloated indexes afterwards.  You might as
> > well just live with the 50% waste, especially since if you did a
> > full-table update once you'll probably do it again sometime.
> >
> > I'm having a hard time believing that VACUUM FULL really has any
> > interesting use-case anymore.
> 
> What if your large table doesn't have an index?  Then there's no way to cluster.

But there's nothing saying we cannot provide a version of CLUSTER that
does not follow any index and just copies the live tuples.

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


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