On Mon, 2011-01-03 at 18:08 +0200, Heikki Linnakangas wrote:

> It works in read committed mode, because you acquire a new snapshot 
> after the LOCK TABLE, and anyone else who modified the table must commit 
> before the lock is granted. In serializable mode you get a serialization 
> error.

If its not safe without this

LOCK TABLE ... IN SHARE ROW EXCLUSIVE MODE

then we should do that automatically, and document that.

-- 
 Simon Riggs           http://www.2ndQuadrant.com/books/
 PostgreSQL Development, 24x7 Support, Training and Services
 


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