SQL:查找注释数最多的用户

我需要找出发表评论最多的用户。有两个表1）用户（Id，DisplayName）2）注释（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

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但是，这将返回Id为1的用户的显示名称，而不是我想要的名称。我如何解决这个问题？

谢谢。。。我使用的是MySql，必须使用“限制1”而不是“顶级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