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Re: wip: functions median and percentile

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Hitoshi Harada <umi(dot)tanuki(at)gmail(dot)com>
Cc: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, David Fetter <david(at)fetter(dot)org>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: wip: functions median and percentile
Date: 2010-10-01 15:08:00
Message-ID: 18142.1285945680@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-rrreviewers
Hitoshi Harada <umi(dot)tanuki(at)gmail(dot)com> writes:
> Another suggestion?

The implementation I would've expected to see is to do the sort and then
have two code paths for retrieving the median, depending on whether the
sort result is all in memory or not.

			regards, tom lane

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