From: Kevin Grittner <Kevin.Grittner@wicourts.gov>
To: pgsql-performance@postgresql.org
To: Lance Campbell <lance@uiuc.edu>
Subject: Re: index stat
Date: Wed, 07 Nov 2007 10:32:15 -0600
Message-ID: <4731942E.EE98.0025.0@wicourts.gov> (raw)
In-Reply-To: <B10E6810AC2A2F4EA7550D072CDE8760197DD5@SAB-FENWICK.sab.uiuc.edu>
References: <B10E6810AC2A2F4EA7550D072CDE8760197DD5@SAB-FENWICK.sab.uiuc.edu>
>>> On Mon, Nov 5, 2007 at 10:42 AM, in message
<B10E6810AC2A2F4EA7550D072CDE8760197DD5@SAB-FENWICK.sab.uiuc.edu>, "Campbell,
Lance" <lance@uiuc.edu> wrote:
> How can I [. . .] get rid of some unnecessary indexes
Here's what I periodically run to look for unused indexes:
select relname, indexrelname
from pg_stat_user_indexes
where indexrelname not like '%_pkey'
and idx_scan = 0
order by relname, indexrelname
;
We omit the primary keys from the list (based on our naming
convention) because they are needed to ensure integrity.
-Kevin
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To: pgsql-performance@postgresql.org
Cc: Kevin.Grittner@wicourts.gov, lance@uiuc.edu
Subject: Re: index stat
In-Reply-To: <4731942E.EE98.0025.0@wicourts.gov>
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