Tomasz Myrta <jasiek(at)klaster(dot)net> writes:
> [ Can't do SET SESSION AUTHORIZATION in a postgres-owned function ]
That's because SET SESSION AUTHORIZATION looks to the original login
userid, not the current effective userid, to decide whether you're
allowed to do it. If it didn't work that way, a superuser couldn't
switch to any other identity after becoming a nonprivileged user.
I don't really see why you think this kluge is better than creating
multiple database users, anyway ...
regards, tom lane