Обсуждение: lock conflicting with another

what does it mean when one lock mode conflicts with another like is
says in the documentation?  can somebody explain and maybe give an
example.

thanx, amir

Amir Zicherman <amir.zicherman@gmail.com> writes:
> what does it mean when one lock mode conflicts with another

It means that a holder of the one lock type will block a requestor
of the other lock type (on the same lockable object, of course).

            regards, tom lane