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From: Ang Chin Han <angch@bytecraft.com.my>
To: Christoph Haller <ch@rodos.fzk.de>
Cc: pgsql-sql@postgresql.org
Cc: jb@baltic-online.de
Subject: Re: Non-Blocking Locks (i.e. Oracle NOWAIT)
Date: Wed, 16 Jul 2003 11:17:47 +0800
Message-ID: <3F14C3DB.6030501@bytecraft.com.my> (raw)
In-Reply-To: <3F1415B7.9001551F@rodos.fzk.de>
References: <3F1415B7.9001551F@rodos.fzk.de>

Christoph Haller wrote:

> PostgreSQL 7.3.2
> T1: begin; select * from foo for update;
> T2: set STATEMENT_TIMEOUT = 1000; -- milliseconds

Seems like setting it to 1 (ms) emulates the NOWAIT condition better. 
Can't set it to 0, though.

> T2: select * from foo for update;
> T2: ERROR:  Query was cancelled.

How picky are we in borrowing syntax and idiocyncracies (?) from other 
DBs? Since we can closely emulate Oracle's behaviour on SELECT ... FOR 
UPDATE NOWAIT, should we just add NOWAIT to the next (non-feature frozen 
version) of postgres?

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  Cc: angch@bytecraft.com.my, ch@rodos.fzk.de, jb@baltic-online.de
  Subject: Re: Non-Blocking Locks (i.e. Oracle NOWAIT)
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