ในแท็กที่กำหนดต่อเดือน ไม่จำเป็นต้องใช้ตารางทั้งหมด
s in a given tag per month.It is not neccessary to use all the tables.
 Users:  Id [ number]  Reputation [ number]  CreationDate [ time]  DisplayName [ text]  LastAccessDate [ time]  WebsiteUrl [ text]  Location [ text]  AboutMe [ text]  Views [ number]  UpVotes [ number]  DownVotes [ number]  ProfileImageUrl [ text]  EmailHash [ text]  AccountId [ number] 
SELECT LAST_DATE_OF_MONTH(CreationDate), (CAST(SUM(CASE WHEN (Tags LIKE '%<##Tagname##>%') THEN 1 ELSE 0 END) AS FLOAT) * 100 / COUNT(Posts.Id)) AS "perc" FROM Posts WHERE (PostTypeId = 1 AND CreationDate BETWEEN '##Date1##' AND '##Date2##') GROUP BY LAST_DATE_OF_MONTH(CreationDate) ORDER BY LAST_DATE_OF_MONTH(CreationDate)