From: Richard Broersma Jr <rabroersma@yahoo.com>
To: Aaron Bono <postgresql@aranya.com>
To: Exner, Peter <Exner@his.de>
Cc: Richard Broersma Jr <rabroersma@yahoo.com>
Cc: SQL Postgresql List <pgsql-sql@postgresql.org>
Subject: Re: How to find entries missing in 2nd table?
Date: Thu, 13 Jul 2006 09:16:51 -0700 (PDT)
Message-ID: <20060713161651.39567.qmail@web31809.mail.mud.yahoo.com> (raw)
In-Reply-To: <bf05e51c0607130846ufdb8a31n5757f67361447c2b@mail.gmail.com>
> > SELECT controller_id FROM control
> > WHERE controller_id NOT IN
> > (SELECT DISTINCT controller_id FROM datapack);
> The DISTINCT is not necessary. I have heard with Oracle that DISTINCT is a
> huge performance problem. Is that true on PostgreSQL also?
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To: pgsql-sql@postgresql.org
Cc: rabroersma@yahoo.com, postgresql@aranya.com, Exner@his.de
Subject: Re: How to find entries missing in 2nd table?
In-Reply-To: <20060713161651.39567.qmail@web31809.mail.mud.yahoo.com>
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