From: Josh Berkus <josh@agliodbs.com>
To: pgsql-performance@postgresql.org
Cc: tomas@nocrew.org
Subject: Re: Query is not using index when it should
Date: Sun, 12 Dec 2004 18:48:27 -0800
Message-ID: <200412121848.27513.josh@agliodbs.com> (raw)
In-Reply-To: <80oeh2tm7x.fsf@junk.nocrew.org>
References: <80oeh2tm7x.fsf@junk.nocrew.org>
Tomas,
> I tried to subscribe to pgsql-performance, but there seems to be
> something wrong with the majordomo, so I'm sending to general too,
> where I'm already subscribed.
Well, I got your e-mail, so obviously you're subscribed to Performance.
> But when doing a search with objectid, class and field, it doesn't use
> the idx_cjm_object1 index.
> db=# explain analyze select * from cjm_object where objectid=4534 and
> class=12 and field='paroid'; QUERY PLAN
Try:
explain analyze select * from cjm_object where objectid=4534::BIGINT and
class=12 and field='paroid';
Sometimes the planner needs a little extra help on BIGINT fields. This
problem is fixed in 8.0.
--
Josh Berkus
Aglio Database Solutions
San Francisco
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To: pgsql-sql@postgresql.org
Cc: josh@agliodbs.com, pgsql-performance@postgresql.org, tomas@nocrew.org
Subject: Re: Query is not using index when it should
In-Reply-To: <200412121848.27513.josh@agliodbs.com>
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