Fabien Meghazi <amigrave(at)gmail(dot)com> writes:
> On any database, when the pg_database access is restraint for standard
> users:
> psql> REVOKE ALL ON pg_database FROM public;
> it not possible anymore to query the field character_octet_length from the
> view information_schema.columns:
It's pretty hard to get excited about that --- it seems like it's going
to be about the least of your problems, if you start revoking public read
permissions on random system catalogs. Postgres isn't really designed
with that sort of change in mind.
regards, tom lane