Michael Glaesemann <grzm@myrealbox.com> writes:
> Yes, there is/was designed behavior, and there is a way to shut it
> off in postgresql.conf. It's still there for backwards compatibility,
> but more recent versions display a notice when a FROM clause is added.
BTW, as of 8.1 add_missing_from will be OFF in the default
configuration.
regards, tom lane