From: Kelly Burkhart <kelly@tradebotsystems.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: mark@mark.mielke.cc, Merlin Moncure <merlin.moncure@rcsonline.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: 8.x index insert performance
Date: Mon, 31 Oct 2005 14:59:51 -0600
Message-ID: <1130792391.7026.55.camel@krb06.tradebot.com> (raw)
In-Reply-To: <18647.1130790629@sss.pgh.pa.us>
References: <6EE64EF3AB31D5448D0007DD34EEB3417DD725@Herge.rcsinc.local>
<20051031193547.GA3311@mark.mielke.cc>
<18647.1130790629@sss.pgh.pa.us>
On Mon, 2005-10-31 at 15:30 -0500, Tom Lane wrote:
> mark@mark.mielke.cc writes:
> > I've been trying to figure out whether null values are indexed or not from
> > the documentation. I was under the impression, that null values are not
> > stored in the index.
>
> You're mistaken, at least with regard to btree indexes.
Ha! So I'm creating an index 98% full of nulls! Looks like this is
easily fixed with partial indexes.
-K
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To: pgsql-performance@postgresql.org
Cc: kelly@tradebotsystems.com, tgl@sss.pgh.pa.us, merlin.moncure@rcsonline.com
Subject: Re: 8.x index insert performance
In-Reply-To: <1130792391.7026.55.camel@krb06.tradebot.com>
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