From: Jim C. Nasby <jnasby@pervasive.com>
To: Martin Marques <martin@bugs.unl.edu.ar>
To: frank church <pgsql@adontendev.net>
To: pgsql-sql@postgresql.org
Subject: Re: Does VACUUM reorder tables on clustered indices
Date: Tue, 20 Dec 2005 15:41:24 -0600
Message-ID: <20051220214124.GR28771@pervasive.com> (raw)
In-Reply-To: <20051218220139.GA1651@surnet.cl>
References: <1134940325.43a5d0a5a882e@webmail.adontendev.net>
<Pine.LNX.4.61.0512181840350.20029@bugs.unl.edu.ar>
<20051218220139.GA1651@surnet.cl>
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@pervasive.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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To: pgsql-sql@postgresql.org
Cc: jnasby@pervasive.com, martin@bugs.unl.edu.ar, pgsql@adontendev.net
Subject: Re: Does VACUUM reorder tables on clustered indices
In-Reply-To: <20051220214124.GR28771@pervasive.com>
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