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Re: SELECT ... FOR UPDATE [WAIT integer | NOWAIT] for 8.5

Alvaro Herrera <alvherre@commandprompt.com>

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From: Alvaro Herrera <alvherre@commandprompt.com>
To: Boszormenyi Zoltan <zb@cybertec.at>
Cc: Bruce Momjian <bruce@momjian.us>, Hans-Juergen Schoenig <postgres@cybertec.at>, Josh Berkus <josh@agliodbs.com>, Tom Lane <tgl@sss.pgh.pa.us>, pgsql-hackers@postgresql.org
Date: 2009-07-27T12:20:39Z
Lists: pgsql-hackers 
Boszormenyi Zoltan wrote:

> The vague consensus for syntax options was that the GUC
> 'lock_timeout' and WAIT [N] extension (wherever NOWAIT
> is allowed) both should be implemented.
> 
> Behaviour would be that N seconds timeout should be
> applied to every lock that the statement would take.

In http://archives.postgresql.org/message-id/291.1242053201@sss.pgh.pa.us
Tom argues that lock_timeout should be sufficient.  I'm not sure what
does WAIT [N] buy.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support