Re: wip: functions median and percentile

Kevin Grittner <kevin.grittner@wicourts.gov>

From: "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
To: "David Fetter" <david@fetter.org>, "Robert Haas" <robertmhaas@gmail.com>
Cc: "Pavel Stehule" <pavel.stehule@gmail.com>, "Greg Stark" <gsstark@mit.edu>, "PostgreSQL Hackers" <pgsql-hackers@postgresql.org>, "Tom Lane" <tgl@sss.pgh.pa.us>
Date: 2010-08-19T17:12:12Z
Lists: pgsql-hackers
David Fetter <david@fetter.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