ไม่รวม) ไม่จำเป็นที่จะต้องใช้ตารางทั้งหมด
s excluded).It is not neccessary to use all the tables.
 SuggestedEdits:  Id [ number]  PostId [ number]  CreationDate [ time]  ApprovalDate [ time]  RejectionDate [ time]  OwnerUserId [ number]  Comment [ text]  Text [ text]  Title [ text]  Tags [ text]  RevisionGUID [ other] 
SELECT COALESCE(Score, 0), AVG(1.0 * COALESCE(CommentCount, 0)) FROM Posts WHERE PostTypeId = 1 AND ABS(COALESCE(Score, 0)) <= 20 GROUP BY COALESCE(Score, 0) ORDER BY COALESCE(Score, 0)