SELECT role_code FROM Employees GROUP BY role_code HAVING count(*)  >=  3
What are the roles with three or more employees? Give me the role codes.
SELECT role_code FROM Employees GROUP BY role_code HAVING count ( * ) > = 3
select role_code from employees group by role_code having count ( * ) > = value
What are the roles with three or more employees ? Give me the role codes .