หลักสูตรไหนยากน้อยกว่า EECS 597 หรือ EECS 755 ?ไม่จำเป็นต้องใช้ทุกตาราง
Which course is less difficult , EECS 597 or EECS 755 ?It is not neccessary to use all the tables.
 student:  student_id [ int]  lastname [ varchar]  firstname [ varchar]  program_id [ int]  declare_major [ varchar]  total_credit [ int]  total_gpa [ float]  entered_as [ varchar]  admit_term [ int]  predicted_graduation_semester [ int]  degree [ varchar]  minor [ varchar]  internship [ varchar] 
SELECT DISTINCT course.number FROM course INNER JOIN program_course ON program_course.course_id = course.course_id WHERE (course.number = 597 OR course.number = 755) AND program_course.workload = (SELECT MIN(PROGRAM_COURSEalias1.workload) FROM program_course AS PROGRAM_COURSEalias1 INNER JOIN course AS COURSEalias1 ON PROGRAM_COURSEalias1.course_id = COURSEalias1.course_id WHERE (COURSEalias1.number = 597 OR COURSEalias1.number = 755) AND COURSEalias1.department = 'EECS')