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Re: Review: listagg aggregate

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Pavel Stehule <pavel.stehule@gmail.com>
Cc: Robert Haas <robertmhaas@gmail.com>, "David E. Wheeler" <david@kineticode.com>, Peter Eisentraut <peter_e@gmx.net>, Scott Bailey <artacus@comcast.net>, "pgsql-hackers@postgresql.org Hackers" <pgsql-hackers@postgresql.org>
Date: 2010-01-26T16:03:57Z
Lists: pgsql-hackers 
Pavel Stehule <pavel.stehule@gmail.com> writes:
> 2010/1/25 Robert Haas <robertmhaas@gmail.com>:
>> On Mon, Jan 25, 2010 at 2:27 PM, David E. Wheeler <david@kineticode.com> wrote:
>>> concat_agg().
>> 
>> I like that one...

> why is concat_agg better than listagg ?

It isn't ... it's the wrong part of speech.  "concat"enate is a verb,
whereas the other functions we would like it to be named parallel to
are using nouns there.

(Yes, I know "array" can be used as a verb, but I don't think anyone
reads it that way in "array_agg"...)

			regards, tom lane