เรียงตามจำนวนคำตอบ ไม่จำเป็นต้องใช้ตารางทั้งหมด
s sorted by answers count.It is not neccessary to use all the tables.
 PostTypes:  Id [ number]  Name [ text] 
SELECT p1.Id AS "post_link", COUNT(p2.Id) AS AnswerCount FROM Posts AS p1 INNER JOIN Posts AS p2 ON p2.ParentId = p1.Id GROUP BY p1.Id ORDER BY AnswerCount DESC LIMIT 100