From: | "Henshall, Stuart - WCP" <SHenshall(at)westcountrypublications(dot)co(dot)uk> |
---|---|
To: | 'John Taylor' <postgres(at)jtresponse(dot)co(dot)uk>, PgSQL Novice <pgsql-novice(at)postgresql(dot)org> |
Subject: | Re: How efficient are Views |
Date: | 2002-06-12 15:21:15 |
Message-ID: | E2870D8CE1CCD311BAF50008C71EDE8E01F748E5@MAIL_EXCHANGE |
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Lists: | pgsql-novice |
A view just re-executes the query.
Therefore a view is as efficient as the query it's based upon :)
hth,
- Stuart
> -----Original Message-----
> From: John Taylor [mailto:postgres(at)jtresponse(dot)co(dot)uk]
>
> Hi,
>
> I'm thinking about using a view for my application.
>
> However, I'm wondering about how efficient it will be once I
> have a large amount of data
> loaded.
>
> Are views generated for every access ?
> Are they generated when the underlying data changes ?
>
> Whould it maybe be faster to have a seperate table alongside
> the base data, and
> generate it via a trigger or stored procedure ?
>
> Thanks
> JohnT
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