SQL:查找评论数最多的用户

Question

我需要找出发表评论最多的用户。有两个表 1)users(Id, DisplayName) 2)comments(Id, UserId, test) 。我使用了以下查询

Select DisplayName from users INNER JOIN (Select UserId, max(comment_count) as `max_comments from (Select UserId, count(Id) as comment_count from comments group by UserId) as` T1) as T2 ON users.Id=T2.UserId

但是，这会返回 Id = 1 的用户的显示名称，而不是我想要的。我该如何解决这个问题？

Answer 1

SELECT TOP 1
 U.DisplayName,
 COUNT(C.ID) AS CommentCount
FROM
 Users AS U
 INNER JOIN Comments AS C ON U.ID = C.UserID
GROUP BY
 U.DisplayName
ORDER BY
 COUNT(C.ID) DESC