ค้นหาบทความที่มี "Olin Shivers" เป็นผู้แต่ง ไม่จำเป็นต้องใช้ตารางทั้งหมด
Find the papers which have "Olin Shivers" as an author.It is not neccessary to use all the tables.
 authorship:  (authid [ VARCHAR ] paperid [ VARCHAR) ]
SELECT t3.title FROM authors AS t1 JOIN authorship AS t2 ON t1.authid = t2.authid JOIN papers AS t3 ON t2.paperid = t3.paperid WHERE t1.fname = "Olin" AND t1.lname = "Shivers"