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Re: sequence query performance issues

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Richard Huxton <dev(at)archonet(dot)com>
Cc: Peter Koczan <pjkoczan(at)gmail(dot)com>, pgsql-performance <pgsql-performance(at)postgresql(dot)org>
Subject: Re: sequence query performance issues
Date: 2007-09-28 14:16:19
Message-ID: 886.1190988979@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-performance
Richard Huxton <dev(at)archonet(dot)com> writes:
> Hmm - why is it doing that?

I'm betting that the OP's people.uid column is not an integer.  Existing
PG releases can't use hashed subplans for cross-data-type comparisons
(8.3 will be a bit smarter).

			regards, tom lane

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