Wei Weng writes:
> If it is not, is it possible to acquire a lock on a row ? how about a
> lock on a table?
SQL statements issued by server-side functions operate with the same
transaction isolation semantics as "normal" SQL statements. However,
whatever the function does outside the database may obviously have
different semantics.
--
Peter Eisentraut peter_e(at)gmx(dot)net http://funkturm.homeip.net/~peter