Unless "table does not exist" does take precisely the same time as “access denied” you still leak the same information by replacing the latter. For logged in u

Unless "table does not exist" does take precisely the same time as “access denied” you still leak the same information by replacing the latter. For logged in users I would prefer logging with explicit error messages. Like that you can tell if someone is poking around or was hacked. And still get clear error messages.