ต่อเดือนหลังจากปี 2019 ไม่จำเป็นต้องใช้ทุกตาราง
per month after 2019.It is not neccessary to use all the tables.
 PostHistory:  Id [ number]  PostHistoryTypeId [ number]  PostId [ number]  RevisionGUID [ other]  CreationDate [ time]  UserId [ number]  UserDisplayName [ text]  Comment [ text]  Text [ text]  ContentLicense [ text] 
SELECT COUNT(*), MONTH(CreationDate) FROM Posts WHERE PostTypeId = 1 AND CreationDate > '2019' GROUP BY MONTH(CreationDate)