query: SELECT employee_id FROM Employees EXCEPT SELECT Destruction_Authorised_by_Employee_ID FROM Documents_to_be_destroyed
question: Show id employee who don't authorize destruction any document.
query_toks: SELECT employee_id FROM Employees EXCEPT SELECT Destruction_Authorised_by_Employee_ID FROM Documents_to_be_destroyed
query_toks_no_value: select employee_id from employees except select destruction_authorised_by_employee_id from documents_to_be_destroyed
question_toks: Show id employee who don't authorize destruction any document.