ถ้าตำแหน่ง de คือความสูงเท่าใด ไม่จำเป็นต้องใช้ตารางทั้งหมด
What is the height if de is the position?It is not neccessary to use all the tables.
 table_23982:  "Round" [ real]  "Choice" [ real]  "Position" [ text]  "Height" [ text]  "Weight" [ real]  "College" [ text] 
SELECT COUNT("Height") FROM table_23982 WHERE "Position" = 'DE'