Re: vacuum analyze again...

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: Jean-Christophe Boggio <cat(at)thefreecat(dot)org>, PostgreSQL General <pgsql-general(at)postgresql(dot)org>
Subject: Re: vacuum analyze again...
Date: 2001-02-20 18:02:19
Message-ID: Pine.LNX.4.30.0102201900510.938-100000@peter.localdomain
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Bruce Momjian writes:

> No, we have no ability to randomly pick rows to use for estimating
> statistics. Should we have this ability?

How's reading a sufficiently large fraction of random rows going to be
significantly faster than reading all rows? If you're just going to read
the first n rows then that isn't really random, is it?

--
Peter Eisentraut peter_e(at)gmx(dot)net http://yi.org/peter-e/

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