. What departments have no employees and what employees have no departments. Show the result of the question through ONLY one query/SELECT statement. Do not write two separate select statements.

There are two tables to be used in this query. The EMPLOYEE table has the following columns:emp_id, first_name, last_name, email, phone_number, Hire_date, job_id, salary, commission_pct, manager_id, department_id.

Whereas the DEPARTMENT table has the following columns: department_id, department_name, location_ name, manager_id