In response to Vyacheslav Kalinin <vka@xxxxxxxx>: > On Mon, Jun 8, 2009 at 8:33 PM, Bill Moran <wmoran@xxxxxxxxxxxxxxxxx> wrote: > > > > > Perhaps you want to take an exclusive lock on the table? The operation > > you describe seems to suggest that you'd want to guarantee exclusive > > write access to the table. > > Exclusive table lock is a bit excessive IMO. Locking particular group > should be good, though it is not quite straightforward to achieve. I'd use > advisory locks or would lock a row in a parent group table (if such table > exists, if not - it might be worth to make one) referenced by rows in > question. Perhaps, but sounds like a lot of unnecessary complexity to me. ... and I didn't say exclusive table lock, I said "exclusive write" Big difference there. -- Bill Moran http://www.potentialtech.com http://people.collaborativefusion.com/~wmoran/ -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general