| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | Greg Stark <gsstark(at)mit(dot)edu> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>, Hitoshi Harada <umi(dot)tanuki(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, 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: | 2010-10-11 18:30:39 |
| Message-ID: | 4CB357CF.1060008@agliodbs.com |
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| Lists: | pgsql-hackers pgsql-rrreviewers |
> Uhmm, then why don't we implement that? We could provide median() as a
> short-cut but percentile_cont() doesn't sound much harder to implement
> than median() and more general.
I could really use percentile_cont(0.9), actually, for query
response-time analysis.
--
-- Josh Berkus
PostgreSQL Experts Inc.
http://www.pgexperts.com
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