| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Marko Tiikkaja <marko(dot)tiikkaja(at)cs(dot)helsinki(dot)fi> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alex Hunsaker <badalex(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Writeable CTE patch |
| Date: | 2009-12-07 22:06:35 |
| Message-ID: | 20091207220635.GP3552@alvh.no-ip.org |
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| Thread: | |
| Lists: | pgsql-hackers |
Marko Tiikkaja escribió:
> Tom Lane wrote:
> >The only thing that I'd be comfortable with is
> >copying the snap and modifying the copy.
>
> I don't see an easy way to do that with the current code;
> CopySnapshot() is static and PushUpdatedSnapshot() seems to be a bit
> of a pain since it messes up some of the existing code which uses
> the active snapshot stack. Any ideas?
That API is rather new. Maybe we need a new entry point, say
GetActiveSnapshotCopy or some such.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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