ที่มีคำตอบสำหรับปี 2563 ไม่จำเป็นต้องใช้ทุกตาราง
s that have answers for year 2020.It is not neccessary to use all the tables.
 ReviewTaskResults:  Id [ number]  ReviewTaskId [ number]  ReviewTaskResultTypeId [ number]  CreationDate [ time]  RejectionReasonId [ number]  Comment [ text] 
SELECT AnswerCount, COUNT(1) FROM (SELECT PostId FROM PostHistory WHERE PostHistoryTypeId = 10) AS Hist INNER JOIN (SELECT Id, AnswerCount FROM Posts WHERE PostTypeId = 1 AND YEAR(CreationDate) = 2020) AS Post ON Hist.PostId = Post.Id GROUP BY AnswerCount ORDER BY AnswerCount