Thomas F. O'Connell wrote:
> What would people think of adding a note to the ROW SHARE section of  
> Table-Level Locks remarking on the fact that referential integrity  
> checks expressed through foreign keys do SELECT ... FOR UPDATES.
> 
> http://www.postgresql.org/docs/8.0/static/explicit- 
> locking.html#LOCKING-TABLES
> 
> It was somewhat challenging today to try to track down a pervasive  
> locking issue related to a table not directly referenced in a stored  
> procedure but that was referenced by a key in a table that was being  
> updated.
> 
> I'm not sure how this changes with the new shared row locking  
> implementation in 8.1...
> 

8.1 will use _shared_ row locks for such cases.

-- 
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