programming-examples/sql/JoinHRDatabase/10. Write a query in SQL to display the first name, last name, department number and name, for all employees who have or have not any department.sql

/*10. Write a query in SQL to display the first name, last name, department number and name, for all employees who have or have
 not any department.*/
SELECT E.first_name, E.last_name, E.department_id, D.department_name   
  FROM employees E   
   LEFT OUTER JOIN departments D   
     ON E.department_id = D.department_id;