From: | Tatsuo Ishii <ishii(at)postgresql(dot)org> |
---|---|
To: | david(at)fetter(dot)org |
Cc: | ishii(at)postgresql(dot)org, y-asaba(at)sraoss(dot)co(dot)jp, postgres(at)cybertec(dot)at, pgsql-patches(at)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: [PATCHES] WITH RECURSIVE updated to CVS TIP |
Date: | 2008-07-16 00:37:25 |
Message-ID: | 20080716.093725.41359149.t-ishii@sraoss.co.jp |
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Lists: | pgsql-hackers pgsql-patches |
> On Tue, Jul 08, 2008 at 06:01:05PM +0900, Tatsuo Ishii wrote:
> > Here is the patches he made against CVS HEAD (as of today).
> >
> > According to him followings are fixed with the patches:
> >
> > - fix crush with DISTINCT
> > - fix creating VIEW
> > - fix the case when recursion plan has another recursion plan under it
> > - fix WITH RECURSIVE ...(..) SELECT ...WHERE.. returns wrong result
> > - fix inifinit recursion with OUTER JOIN
>
> Great!
>
> I've patched psql for some partial support of WITH [RECURSIVE].
>
> http://git.postgresql.org/?p=~davidfetter/postgresql/.git;a=commit;h=da63f9a82b9e902b5542f788b2e6e6bc95221793
Thanks. I will incorporate them with propsed patches.
> > Not yet fixed:
> >
> > - detect certain queries those are not valid acroding to the standard
> > - sort query names acording to the dependency
>
> Is there something in the standard on how to do this? How to sort the
> nodes other ways?
No idea. What do you think if we allow only one query name at the
moment. I guess most WITH RECURISVE use cases are enough with single
query name.
--
Tatsuo Ishii
SRA OSS, Inc. Japan
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