ผู้ใช้ 10 รายที่มีคะแนนคำตอบเฉลี่ยสูงสุด ไม่จำเป็นต้องใช้ตารางทั้งหมด
10 users with the top average answer score.It is not neccessary to use all the tables.
 ReviewRejectionReasons:  Id [ number]  Name [ text]  Description [ text]  PostTypeId [ number] 
SELECT OwnerUserId, AVG(Score) AS AvgScore, COUNT(*) AS AnswersPosted FROM Posts WHERE PostTypeId = 2 AND OwnerUserId > 0 GROUP BY OwnerUserId ORDER BY AVG(Score) DESC LIMIT 10