| From: | "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com> |
|---|---|
| To: | Martin Marques <martin(at)bugs(dot)unl(dot)edu(dot)ar>, frank church <pgsql(at)adontendev(dot)net>, pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: Does VACUUM reorder tables on clustered indices |
| Date: | 2005-12-20 21:41:24 |
| Message-ID: | 20051220214124.GR28771@pervasive.com |
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| Thread: | |
| Lists: | pgsql-hackers pgsql-sql |
On Sun, Dec 18, 2005 at 07:01:39PM -0300, Alvaro Herrera wrote:
> Martin Marques escribi?:
> > On Sun, 18 Dec 2005, frank church wrote:
> >
> > >
> > >Does VACUUMing reorder tables on clustered indices or is it only the
> > >CLUSTER
> > >command that can do that?
> >
> > Cluster does that. Vacuum only cleans dead tuples from the tables.
>
> Note that while reordering, CLUSTER also gets rid of dead tuples, so if
> you cluster you don't need to vacuum.
It also does a REINDEX...
--
Jim C. Nasby, Sr. Engineering Consultant jnasby(at)pervasive(dot)com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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