ผู้ใช้ 10 อันดับแรกตามคะแนนคำตอบเฉลี่ย ไม่จำเป็นต้องใช้ตารางทั้งหมด
Top 10 users by average answer score.It is not neccessary to use all the tables.
 ReviewTaskTypes:  Id [ number]  Name [ text]  Description [ text] 
SELECT OwnerUserId AS "user_link", AVG(Score), COUNT(*) AS NumAnswers FROM Posts WHERE PostTypeId = 2 AND OwnerUserId > 0 GROUP BY OwnerUserId ORDER BY AVG(Score) DESC LIMIT 10