From: | Reinoud van Leeuwen <reinoud(dot)v(at)n(dot)leeuwen(dot)net> |
---|---|
To: | PostgreSQL SQL <pgsql-sql(at)postgresql(dot)org> |
Subject: | Re: More efficient OR |
Date: | 2005-02-16 16:15:08 |
Message-ID: | 20050216161508.GW4705@spoetnik.xs4all.nl |
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Lists: | pgsql-sql |
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(dot)v(at)n(dot)leeuwen(dot)net
http://www.xs4all.nl/~reinoud
__________________________________________________
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