จำนวนคำถามที่มีจำนวนการดูมากกว่า 500 ข้อ ไม่จำเป็นต้องใช้ตารางทั้งหมด
Number of Questions With View Count of Over 500.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 COUNT(*) AS "Number of Questions" FROM Posts AS p LEFT JOIN PostTags AS pt ON p.Id = pt.PostId LEFT JOIN Tags AS t ON pt.TagId = t.Id WHERE ViewCount > 500