Re: Review: listagg aggregate

Robert Haas <robertmhaas@gmail.com>

From: Robert Haas <robertmhaas@gmail.com>
To: Pavel Stehule <pavel.stehule@gmail.com>
Cc: Takahiro Itagaki <itagaki.takahiro@oss.ntt.co.jp>, "David E. Wheeler" <david@kineticode.com>, "pgsql-hackers@postgresql.org Hackers" <pgsql-hackers@postgresql.org>
Date: 2010-01-28T14:17:00Z
Lists: pgsql-hackers
On Thu, Jan 28, 2010 at 9:01 AM, Pavel Stehule <pavel.stehule@gmail.com> wrote:
> simplest could not be a best. There have to be only a const
> expression. But we have not possibility to check it in pg.

Well... that's an entirely arbitrary limitation.  I admit that it
doesn't seem likely that someone would want to have a variable
delimiter, but putting extra effort and code complexity into
preventing it seems pointless.

...Robert