Sql server 2008 SQL Server-2008脚本编写效率更高的是什么？我该怎么说？

我有以下两个问题。哪一个更有效？我该怎么说？我已经看过执行计划，但不知道我在寻找什么，任何帮助都将不胜感激

 ;WITH TEST AS

 (SELECT DISTINCT *, DENSE_RANK () OVER (PARTITION BY T.id 
  ORDER BY T.ID DESC) AS seq_LatestUpdate
           FROM test] t 
                                 )

SELECT *
  FROM  t
INNER JOIN TEST ON T.Id = TEST.Id AND TEST.seq_LatestUpdate = 1
WHERE 1=1

或

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比较执行计划比较执行计划

SELECT *
FROM [MCS].[JXM1563].[test] t
INNER JOIN (SELECT  DISTINCT T.Id, MAX(ID_CREATEDATE) AS MAXuPDATE
FROM test t
              GROUP BY T.Id 
                                 ) Z ON T.Id = Z.Id
WHERE 1=1