SELECT COUNT(*), dept_code FROM CLASS AS T1 JOIN course AS T2 ON T1.crs_code = T2.crs_code GROUP BY dept_code
CREATE TABLE CLASS (crs_code VARCHAR); CREATE TABLE course (crs_code VARCHAR)
ค้นหาจำนวนชั้นเรียนในแต่ละแผนก
Find the number of classes in each department.