s จะอยู่ด้านบน ตามด้วยแท็กที่สองถัดไป เป็นต้น ไม่จำเป็นต้องใช้ทุกตาราง
s will be at the top, followed by second next tag etc.It is not neccessary to use all the tables.
 PostTags:  PostId [ number]  TagId [ number] 
SELECT t.TagName, COUNT(q.Id) AS countofUnAnsweredQuestions FROM Posts AS q INNER JOIN PostTags AS pt ON pt.PostId = q.Id INNER JOIN Tags AS t ON pt.TagId = t.Id WHERE (SELECT COUNT(*) FROM Posts AS a WHERE a.ParentId = q.Id AND a.Score > 0) = 0 AND q.CommunityOwnedDate IS NULL AND q.ClosedDate IS NULL AND q.ParentId IS NULL AND q.AcceptedAnswerId IS NULL GROUP BY t.TagName ORDER BY countofUnAnsweredQuestions DESC