SQL中唯一行的聚合

我有下表中的唯一行：

Name        change  Number_of_Sales
Soby        2.22    8370
Sollerod    -1.06   11287
Sonderborg  2.60    6343
Sonderhald  11.43   1623
Sonderhald  10.93   2098

我想选择

name

和

change

，排除重复的名称，这样Sonderhald只出现一次。我想要销售数量最大的Sonderhald

如何在SQL Server中执行此操作

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谢谢

您可以使用通用表表达式来执行此操作：

;
WITH    cte
          AS ( SELECT   Name,
                        Change,
                        Number_of_Sales,
                        ROW_NUMBER() OVER ( PARTITION BY name ORDER BY number_of_sales DESC ) AS RowNum
               FROM     your_table
             )
    SELECT  Name,
            Change,
            Number_of_Sales
    FROM    cte
    WHERE   RowNum = 1

;
WITH    cte
          AS ( SELECT   Name,
                        Change,
                        Number_of_Sales,
                        ROW_NUMBER() OVER ( PARTITION BY name ORDER BY number_of_sales DESC ) AS RowNum
               FROM     your_table
             )
    SELECT  Name,
            Change,
            Number_of_Sales
    FROM    cte
    WHERE   RowNum = 1