มีกี่ทัชดาวน์เมื่อมี 0 แต้มพิเศษและ Hal Weeks ทิ้งกองหลังไว้?ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many touchdowns are there when there were 0 extra points and Hal Weeks had left halfback?It is not neccessary to use all the tables.
 table_name_71:  (touchdowns [ VARCHAR ] player [ VARCHAR ] extra_points [ VARCHAR ] position [ VARCHAR) ]
SELECT touchdowns FROM table_name_71 WHERE extra_points = 0 AND position = "left halfback" AND player = "hal weeks"