ผู้ใช้ที่มีการแก้ไขโพสต์ของผู้ใช้รายอื่นมากที่สุดในปี 2560 ไม่จำเป็นต้องใช้ตารางทั้งหมด
Users with the most edits of other users' posts in 2017.It is not neccessary to use all the tables.
 PendingFlags:  Id [ number]  FlagTypeId [ number]  PostId [ number]  CreationDate [ time]  CloseReasonTypeId [ number]  CloseAsOffTopicReasonTypeId [ number]  DuplicateOfQuestionId [ number]  BelongsOnBaseHostAddress [ text] 
SELECT a.UserId AS "user_link", COUNT(a.PostId) AS "Count", a.UserId AS "UserId" FROM PostHistory AS a INNER JOIN Posts AS b ON a.PostId = b.Id WHERE a.PostHistoryTypeId = 5 AND b.CreationDate < '2018-01-01' AND a.CreationDate >= '2017-01-01' GROUP BY a.UserId ORDER BY COUNT(a.PostId) DESC