ฤดูใบไม้ผลิ-ฤดูร้อนนี้มีชั้นเรียนอะไรบ้าง ?ไม่จำเป็นต้องใช้ทุกตาราง
What are the available classes this Spring-Summer ?It is not neccessary to use all the tables.
 area:  course_id [ int]  area [ varchar] 
SELECT DISTINCT course.department, course.name, course.number FROM course, course_offering, semester WHERE course.course_id = course_offering.course_id AND course.department = 'EECS' AND semester.semester = 'Spring-Summer' AND semester.semester_id = course_offering.semester AND semester.year = 2016