How many classes are held in each department?
SELECT count(*) ,  dept_code FROM CLASS AS T1 JOIN course AS T2 ON T1.crs_code  =  T2.crs_code GROUP BY dept_code
SELECT count(*) ,  dept_code FROM CLASS AS T1 JOIN course AS T2 ON T1.crs_code  =  T2.crs_code GROUP BY dept_code
[{'count(*)': 5, 'DEPT_CODE': 'ACCT'}, {'count(*)': 8, 'DEPT_CODE': 'CIS'}]