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Re: Review: listagg aggregate

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
Cc: Takahiro Itagaki <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>, "David E(dot) Wheeler" <david(at)kineticode(dot)com>, "pgsql-hackers(at)postgresql(dot)org Hackers" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Review: listagg aggregate
Date: 2010-01-28 14:17:00
Message-ID: 603c8f071001280617n7a5f064bob6ac242a3cf640f3@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On Thu, Jan 28, 2010 at 9:01 AM, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)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

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