คะแนนเฉลี่ยใดที่แพ้มากกว่า 20? ไม่จำเป็นต้องใช้ตารางทั้งหมด
Which average Points has a Lost higher than 20?It is not neccessary to use all the tables.
 table_41937:  "Position" [ real]  "Team" [ text]  "Points" [ real]  "Played" [ real]  "Drawn" [ real]  "Lost" [ real]  "Against" [ real]  "Difference" [ text] 
SELECT AVG("Points") FROM table_41937 WHERE "Lost" > '20'