Joachim Wieland <joe@mcknight.de> writes:
> So in effect, if you grant the CREATEROLE privilege, you automatically grant
> CREATEDB as well...
Not to mention a whole lot of other privileges. CREATEROLE is pretty
nearly superuser from a what-can-you-do point of view. It only disables
the ability to actively break the database system (eg by directly
modifying system catalogs).
regards, tom lane