แนวโน้มภาษา (# คำถามต่อเดือน) ไม่จำเป็นต้องใช้ตารางทั้งหมด
Language trends (# of Questions per Month).It is not neccessary to use all the tables.
 SuggestedEditVotes:  Id [ number]  SuggestedEditId [ number]  UserId [ number]  VoteTypeId [ number]  CreationDate [ time]  TargetUserId [ number]  TargetRepChange [ number] 
SELECT DATEADD(mm, (YEAR(Posts.CreationDate) - 1900) * 12 + MONTH(Posts.CreationDate) - 1, 0) AS Month, Tags.TagName, COUNT(*) AS Questions FROM Tags LEFT JOIN PostTags ON PostTags.TagId = Tags.Id LEFT JOIN Posts ON Posts.Id = PostTags.PostId LEFT JOIN PostTypes ON PostTypes.Id = Posts.PostTypeId WHERE Tags.TagName IN ('rust', 'dart', 'go', 'scala', 'erlang', '.net core', 'c#', 'java', 'javascript', 'c', 'c++', 'python') AND YEAR(Posts.CreationDate) > 2014 AND PostTypes.Name = 'Question' GROUP BY YEAR(Posts.CreationDate), MONTH(Posts.CreationDate), Tags.TagName ORDER BY YEAR(Posts.CreationDate), MONTH(Posts.CreationDate), Tags.TagName