Re: Weird locking situation

Tom Lane kirjutas N, 02.10.2003 kell 17:30:
> Christopher Kings-Lynne <chriskl@familyhealth.com.au> writes:
> > What is going on here?  Surely getting a FOR UPDATE row lock should 
> > prevent another process getting an update lock?

> The behavior you describe would certainly be a bug, but you'll have to
> show a reproducible example to convince me it wasn't pilot error.  One
> idea that springs to mind is that maybe additional rows with id=1 were
> inserted (by some other transaction) between the SELECT FOR UPDATE and
> the UPDATE?

Perhaps he was looking for "key locking", so thet "select ... where
key=1 for update" would also prevent inserts where key=1 ?

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Hannu