| From: | Hitoshi Harada <umi(dot)tanuki(at)gmail(dot)com> |
|---|---|
| To: | Marko Tiikkaja <marko(dot)tiikkaja(at)cs(dot)helsinki(dot)fi> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Robert Haas <robertmhaas(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Yeb Havinga <yebhavinga(at)gmail(dot)com>, David Fetter <david(at)fetter(dot)org> |
| Subject: | Re: wCTE behaviour |
| Date: | 2010-11-14 15:28:16 |
| Message-ID: | AANLkTim3yvTxrp_KeAv7zujTNx6bwo3rV0K-oO9PaeOY@mail.gmail.com |
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| Lists: | pgsql-hackers |
2010/11/14 Marko Tiikkaja <marko(dot)tiikkaja(at)cs(dot)helsinki(dot)fi>:
> On 2010-11-12 8:25 PM +0200, I wrote:
>>
>> I'm going to take some time off this weekend to get a patch with this
>> behaviour to the next commitfest.
>
> .. and a wild patch appears.
>
> This is almost exactly the patch from 2010-02 without
> CommandCounterIncrement()s. It's still a bit rough around the edges and
> needs some more comments, but I'm posting it here anyway.
>
> This patch passes all regression tests, but feel free to try to break it,
> there are probably ways to do that. This one also has the "always run DMLs
> to completion, and exactly once" behaviour.
>
Could you update wiki on this feature if you think we've reached the consensus?
http://wiki.postgresql.org/wiki/WriteableCTEs
Also, wrapping up the discussion like pros & cons on the different
execution models helps not only the advance discussions but also
reviews of this patch.
Regards,
--
Hitoshi Harada
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