Re: Postresql 8.0 Beta 3 - SELECT ... FOR UPDATE

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Robert Treat <xzilla(at)users(dot)sourceforge(dot)net>
Cc: ronzo <m(dot)ronzoni(at)nocerainformatica(dot)net>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Postresql 8.0 Beta 3 - SELECT ... FOR UPDATE
Date: 2004-10-26 17:35:13
Message-ID: 200410261735.i9QHZDi20823@candle.pha.pa.us
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There is a statement_timeout that will control how long a statement can
execute before being cancelled. We have never agreed that controlling
how long we wait for an individual lock is valuable.

---------------------------------------------------------------------------

Robert Treat wrote:
> On Thursday 21 October 2004 06:44, you wrote:
> > Hi
> >
> > Was already implemented the timeout on the "SELECT ... FOR UPDATE"
> > (non-blocking lock) and/or is possible known if the lock exist on the
> > specified ROW before executing the SELECT?
> >
>
> No.
>
> > Please note: ours need is the timeout/verify at the ROW level, not at the
> > table level.
> >
> > Is already OK? Is in the TODO list?
> > May you suggest an alternative method?
> >
> > Thank you.
>
> You would need a more extensive implementation of row level locks than
> PostgreSQL currently offers. There have been discussions about this in the
> past, but afaik no one is actively working on it. You can probably find more
> info in the archives about it, also I believe it is on the TODO list, so you
> might find some more detail by looking there.
>
> --
> Robert Treat
> Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL
>
> ---------------------------(end of broadcast)---------------------------
> TIP 7: don't forget to increase your free space map settings
>

--
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