College of the Halfback Player คืออะไร?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
What is the College of the Halfback Player?It is not neccessary to use all the tables.
 table_name_57:  (college [ VARCHAR ] position [ VARCHAR) ]
SELECT college FROM table_name_57 WHERE position = "halfback"