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Re: INSERT/UPDATEs cycles and lack of phantom locking - Mailing list pgsql-sql

From Florian Weimer
Subject Re: INSERT/UPDATEs cycles and lack of phantom locking
Date
Msg-id 823bcw20mz.fsf@mid.bfk.de
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In response to Re: INSERT/UPDATEs cycles and lack of phantom locking  (Florian Weimer <fweimer@bfk.de>)
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* Florian Weimer:

> In addition, it occurred to me that I get the INSERT failure only if
> there is a suitable PRIMARY KEY/UNIQUE constraint on the table.  I
> haven't got that in all cases, so I need that advisory locking anyway,

It seems that LOCK TABLE ... IN EXCLUSIVE MODE does exactly what I
need: it locks out itself (and write access), but not read access to
the table.  And deadlocks are detected as well.  Yay!

-- 
Florian Weimer                <fweimer@bfk.de>
BFK edv-consulting GmbH       http://www.bfk.de/
Durlacher Allee 47            tel: +49-721-96201-1
D-76131 Karlsruhe             fax: +49-721-96201-99

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