From: Reinoud van Leeuwen <reinoud.v@n.leeuwen.net>
To: PostgreSQL SQL <pgsql-sql@postgresql.org>
Subject: Re: More efficient OR
Date: Wed, 16 Feb 2005 17:15:08 +0100
Message-ID: <20050216161508.GW4705@spoetnik.xs4all.nl> (raw)
In-Reply-To: <20050216155901.M41773@narrowpathinc.com>
References: <20050216155901.M41773@narrowpathinc.com>
On Wed, Feb 16, 2005 at 11:02:59AM -0500, Keith Worthington wrote:
> Hi All,
>
> In several of my SQL statements I have to use a WHERE clause that contains
> mutiple ORs. i.e.
>
> WHERE column1 = 'A' OR
> column1 = 'B' OR
> column1 = 'C'
>
> Is there a more efficient SQL statement that accomplishes the same limiting
> functionality?
I do not know wheter it is more efficient in terms of execution, but I can
read this more efficiently:
WHERE column1 in ('A', 'B', 'C')
--
__________________________________________________
"Nothing is as subjective as reality"
Reinoud van Leeuwen reinoud.v@n.leeuwen.net
http://www.xs4all.nl/~reinoud
__________________________________________________
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To: pgsql-sql@postgresql.org
Cc: reinoud.v@n.leeuwen.net
Subject: Re: More efficient OR
In-Reply-To: <20050216161508.GW4705@spoetnik.xs4all.nl>
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