CREATE GROUP — define a new database role
CREATE GROUPname[ [ WITH ]option[ ... ] ] whereoptioncan be: SUPERUSER | NOSUPERUSER | CREATEDB | NOCREATEDB | CREATEROLE | NOCREATEROLE | CREATEUSER | NOCREATEUSER | INHERIT | NOINHERIT | LOGIN | NOLOGIN | [ ENCRYPTED | UNENCRYPTED ] PASSWORD 'password' | VALID UNTIL 'timestamp' | IN ROLErolename[, ...] | IN GROUProlename[, ...] | ROLErolename[, ...] | ADMINrolename[, ...] | USERrolename[, ...] | SYSIDuid