Answer:
Check the explanation
Step-by-step explanation:
For SQL server and mySQL:
SELECT C.SerialNumber, Make, Model, E.EmployeeNumber,
LastName, Firstname, Department, OfficePhone
FROM COMPUTER AS C JOIN COMPUTER ASSIGNMENT AS CA
ON C.SerialNumber=CA.SerialNumber
JOIN EMPLOYEE AS E ON
CA.EmployeeNumber=E.EmployeeNumber
WHERE DateReassigned IS NULL
ORDER BYDepartment, LastName;