รอบไหนมีตำแหน่งแท็คเกิ้ลตัวรุก ไม่จำเป็นต้องใช้ทุกโต๊ะ
Which round has an offensive tackle position?It is not neccessary to use all the tables.
 table_name_7:  (round [ VARCHAR ] position [ VARCHAR) ]
SELECT round FROM table_name_7 WHERE position = "offensive tackle"