s.ไม่จำเป็นที่จะต้องใช้ทุกตาราง
s.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 c.Id AS "Comment ID", c.CreationDate AS "Comment Date", u.DisplayName AS "Post Owner", p.Id AS "Post ID", p.Title AS "Post Title", p.ParentId AS "Parent ID" FROM Posts AS p JOIN Comments AS c ON c.PostId = p.Id JOIN Users AS u ON u.Id = p.OwnerUserId WHERE c.UserId = 206691