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SQL

/*4. Write a query in SQL to display the first name, last name, department number and department name, for all employees for
departments 80 or 40. */
SELECT E.first_name , E.last_name ,
E.department_id , D.department_name
FROM employees E
JOIN departments D
ON E.department_id = D.department_id
AND E.department_id IN (80 , 40)
ORDER BY E.last_name;