Tsql 仅选择日期的最后一个值？

我有一个SELECT，它返回类似于这个结果的结果（我简化了它，因为最初的SELECT相当复杂）：

| UserFK | aDate | aValue|
---------------------------------------------
| 1000      | 03.12.2012 10:00  | 123       |
|1000 | 03.12.2012 11:00 | 456 |您可以将
CTE
与以下内容一起使用：

WITH CTE AS
(
   SELECT UserFK, aDate, aValue,
     RN = ROW_NUMBER() OVER (PARTITION BY UserFK ORDER BY aDate DESC)
   FROM dbo.TableName
)
SELECT UserFK, aDate, aValue
FROM CTE
WHERE RN = 1

WITH CTE AS
(
   SELECT UserFK, aDate, aValue,
     RN = ROW_NUMBER() OVER (PARTITION BY UserFK ORDER BY aDate DESC)
   FROM dbo.TableName
)
SELECT UserFK, aDate, aValue
FROM CTE
WHERE RN = 1