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Re: introduction of WIP window function patch

From: David Fetter <david(at)fetter(dot)org>
To: "H(dot)Harada" <umi(dot)tanuki(at)gmail(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: introduction of WIP window function patch
Date: 2008-07-17 07:28:59
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
On Sat, Jul 05, 2008 at 07:04:29PM +0900, H.Harada wrote:
> Hi,
> As I proposed a month before, I am working on window function.
> Although this work is at quite early step, I would like to introduce
> it since a part of it have been finished. If you can afford and are
> interested in it, please review the document and patch, or compile the
> applied source to execute an attached sample SQL.
> Currently, only aggregation over window does work. I am planning to
> work for the combination of window and normal aggregation from now on,
> which I guess I can manage to do.
> The problem is, as written in the "Things to discussed" section of the
> document, how you define window functions (e.g. RANK()). My idea is to
> treat them as specialized functions such as SET OF functions and mark
> it in pg_proc. But this doesn't resolve RANK() boundary problem.
> I am so happy with any kind of comments, reviews or critiques.
> Regards,

Many people have been waiting for years for this functionality.
Thanks so much for doing this.

When will you have another patch that applies against CVS HEAD?

David Fetter <david(at)fetter(dot)org>
Phone: +1 415 235 3778  AIM: dfetter666  Yahoo!: dfetter
Skype: davidfetter      XMPP: david(dot)fetter(at)gmail(dot)com

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