SELECT avg(num_employees) FROM department WHERE ranking BETWEEN 10 AND 15
What is the average number of employees of the departments whose rank is between 10 and 15?
SELECT avg ( num_employees ) FROM department WHERE ranking BETWEEN 10 AND 15
select avg ( num_employees ) from department where ranking between value and value
What is the average number of employees of the departments whose rank is between 10 and 15 ?