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.
>
> http://umitanuki.net/pgsql/wfv01/design.html
>
> 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?
Cheers,
David.
--
David Fetter <david@fetter.org> http://fetter.org/
Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter
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