From: | "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov> |
---|---|
To: | "David Fetter" <david(at)fetter(dot)org>, "Robert Haas" <robertmhaas(at)gmail(dot)com> |
Cc: | "Pavel Stehule" <pavel(dot)stehule(at)gmail(dot)com>, "Greg Stark" <gsstark(at)mit(dot)edu>, "PostgreSQL Hackers" <pgsql-hackers(at)postgresql(dot)org>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Subject: | Re: wip: functions median and percentile |
Date: | 2010-08-19 17:12:12 |
Message-ID: | 4C6D1F9C020000250003491F@gw.wicourts.gov |
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Lists: | pgsql-hackers pgsql-rrreviewers |
David Fetter <david(at)fetter(dot)org> wrote:
> Median may be useful, but we pretty much can't just call it
> "median." Instead, we need to call it something like "left_median"
> or "arithmetic_median."
I think it would be reasonable, and perhaps preferable, to use just
"median" for the semantics described in most dictionaries -- for
example, this:
http://www.merriam-webster.com/dictionary/median
If you do a google search for "median" and poke around, you'll find
many places where this is the only definition mentioned; the others
seem to be rather infrequently used. Why not make the commone usage
convenient?
-Kevin
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