100 ( ).ไม่จำเป็นต้องใช้ทุกตาราง
100 ( ).It is not neccessary to use all the tables.
 Tags:  Id [ number]  TagName [ text]  Count [ number]  ExcerptPostId [ number]  WikiPostId [ number] 
SELECT COUNT(*) FROM (SELECT DISTINCT OwnerUserId FROM Posts GROUP BY OwnerUserId, YEAR(CreationDate) HAVING COUNT(Id) >= 100) AS t1