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  1. Doc: improve index entry for "median".

  1. Median missing from aggregate functions page

    Steven Winfield <steven.winfield@cantabcapital.com> — 2016-12-23T10:20:56Z

    The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/9.6/static/functions-aggregate.html
Description:

The index contains an entry for &quot;median&quot; on the aggregate functions page,
but there is no mention of it there.

  2. Re: Median missing from aggregate functions page

    Tom Lane <tgl@sss.pgh.pa.us> — 2016-12-23T15:21:39Z

    steven.winfield@cantabcapital.com writes:
> The index contains an entry for &quot;median&quot; on the aggregate functions page,
> but there is no mention of it there.

Hm --- that <indexterm> entry is attached to the percentile_cont()
function, which can be used to implement median, but I agree that
a person who already knew that would probably not be following the
index pointer.

It might be more useful to point to 4.2.7. Aggregate Expressions
which contains a concrete example of how to implement median
with percentile_disc().

Another idea is to just make the index entry say
"See percentile_cont() and percentile_disc()".

			regards, tom lane