2008/7/17 David Fetter <[EMAIL PROTECTED]>: > 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 <[EMAIL PROTECTED]> http://fetter.org/ > Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter > Skype: davidfetter XMPP: [EMAIL PROTECTED] > > Remember to vote! > Consider donating to Postgres: http://www.postgresql.org/about/donate >
As you see the patch is not completed yet, lacking RANK() etc. I am now struggling for this design which I assume will finish by the end of this month. Since then, I will apply it against HEAD. So another patch to -hackers will be around first half of August, or by the next Commit Fest at worst. There must be more discussion about the RANK() design after the post. But I hope it will be in 8.4. Regards, -- Hitoshi Harada -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
