Re: large tables and simple "= constant" queries using indexes

From: Gaetano Mendola <mendola(at)gmail(dot)com>
To: John Beaver <john(dot)e(dot)beaver(at)gmail(dot)com>
Subject: Re: large tables and simple "= constant" queries using indexes
Date: 2008-04-10 16:18:15
Message-ID: 47FE3DC7.4010700@gmail.com
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John Beaver wrote:

> - Trying the same constant a second time gave an instantaneous result,
> I'm guessing because of query/result caching.

AFAIK no query/result caching is in place in postgres, what you are experiencing
is OS disk/memory caching.

Regards
Gaetano Mendola

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