การกระจายเวลาตอบกลับเป็นชั่วโมงจนกว่าจะตอบรับคำตอบ ไม่จำเป็นต้องใช้ตารางทั้งหมด
Response time distribution in hours until accepted answer.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(*) AS "count", CAST((JULIANDAY(CreationDate) - JULIANDAY(qu.CreationDate)) * 24.0 AS INT) AS Hours FROM Posts AS qu JOIN Posts AS ans ON qu.AcceptedAnswerId = ans.Id GROUP BY CAST((JULIANDAY(CreationDate) - JULIANDAY(qu.CreationDate)) * 24.0 AS INT) ORDER BY 'hours'