sql 分组查询，组内排序， 组内添加序号 （SQL Server 排序函数 ROW_NUMBER和RANK 用法总结）

-- 添加序列号

-- 行号用法：

ROW_NUMBER() OVER (ORDER BY SalesOrderID) AS RowNumber

-- 排序函数的用法：

RANK() OVER(PARTITION BY CountryName ORDER BY TotalAmt, CustomerID DESC) AS Rank

SELECT *,

  RANK() OVER(PARTITION BY CountryName ORDER BY TotalAmt, CustomerID DESC) AS Rank

 FROM CTETerritory

来自：http://blog.csdn.net/tjvictor/article/details/4331039