s.ไม่จำเป็นที่จะต้องใช้ทุกตาราง
s.It is not neccessary to use all the tables.
 Votes:  Id [ number]  PostId [ number]  VoteTypeId [ number]  UserId [ number]  CreationDate [ time]  BountyAmount [ number] 
SELECT COUNT(Id) AS Posts, COUNT(AnswerCount) AS Ans FROM Posts WHERE PostTypeId = 1 AND AnswerCount != 0