SELECT T1.crs_code FROM CLASS AS T1 JOIN enroll AS T2 ON T1.class_code  =  T2.class_code JOIN student AS T3 ON T3.stu_num  =  T2.stu_num WHERE T3.stu_lname  =  'Smithson'
What are the course codes for every class that the student with the last name Smithson took?
SELECT T1.crs_code FROM CLASS AS T1 JOIN enroll AS T2 ON T1.class_code = T2.class_code JOIN student AS T3 ON T3.stu_num = T2.stu_num WHERE T3.stu_lname = 'Smithson '
select t1 . crs_code from class as t1 join enroll as t2 on t1 . class_code = t2 . class_code join student as t3 on t3 . stu_num = t2 . stu_num where t3 . stu_lname = value
What are the course codes for every class that the student with the last name Smithson took ?