http//meta.stackoverflow.com/q/67882/7586ไม่จำเป็นต้องใช้ตารางทั้งหมด
http//meta.stackoverflow.com/q/67882/7586It is not neccessary to use all the tables.
 Votes:  Id [ number]  PostId [ number]  VoteTypeId [ number]  UserId [ number]  CreationDate [ time]  BountyAmount [ number] 
SELECT u.Id AS "user_link", u.Reputation, COUNT(b.Name) AS tumbleweed_count FROM Badges AS b JOIN Users AS u ON b.UserId = u.Id WHERE b.Name = 'Tumbleweed' GROUP BY b.Name, u.Id, u.Reputation ORDER BY Reputation DESC LIMIT 250