Microsoft SQL Server-订单百分比

我正在培训Northwind样本数据库，并有任务要做： 创建返回以下内容的查询：

CompanyName

、

OrderID

、

SaleAmount

（该订单的价值）、该订单的百分比值、客户订单的总值

我做到了，一切正常，但现在我想补充一点： 我想添加一个字段，显示单个订单占所有订单总价值的百分比份额-总和（销售额）

我是这样做的：

SELECT
  CompanyName,
  OrderID,
  SaleAmount,
  CAST(100 * SaleAmount / SUM(SaleAmount) OVER (PARTITION BY CompanyName) AS decimal(5, 2)) AS 'Percent',
  SUM(SaleAmount) OVER (PARTITION BY CompanyName) AS Total,
  (SELECT
    SUM(SaleAmount) AS Całość_Zamówienia
  FROM dbo.[Sales Totals by Amount])
  AS Suma_całkowita,
  CAST(100 * SaleAmount / SUM(SaleAmount) OVER (PARTITION BY CompanyName) AS decimal(11, 2)) AS 'TEST'
FROM dbo.[Sales Totals by Amount]
GROUP BY CompanyName,
         OrderID,
         SaleAmount

但是它显示了愚蠢的事情，你能帮我吗？：）

试试这个：

 SELECT CompanyName, OrderID, SaleAmount,
        CAST(100 * SaleAmount / SUM(SaleAmount) OVER(PARTITION BY CompanyName) as decimal(5,2)) as 'Percent',
        SUM(SaleAmount) OVER(PARTITION BY CompanyName) as Total,
        (SELECT Sum(SaleAmount) as Całość_Zamówienia FROM dbo.[Sales Totals by Amount]) as Suma_całkowita
        ,CAST(100 * SUM(SaleAmount) OVER(PARTITION BY CompanyName)/ (select sum(SaleAmount) from dbo.[Sales Totals by Amount])  as decimal(11,2)) as 'TEST'
        FROM dbo.[Sales Totals by Amount] 
        GROUP BY CompanyName, OrderID, SaleAmount

试试这个：

 SELECT CompanyName, OrderID, SaleAmount,
        CAST(100 * SaleAmount / SUM(SaleAmount) OVER(PARTITION BY CompanyName) as decimal(5,2)) as 'Percent',
        SUM(SaleAmount) OVER(PARTITION BY CompanyName) as Total,
        (SELECT Sum(SaleAmount) as Całość_Zamówienia FROM dbo.[Sales Totals by Amount]) as Suma_całkowita
        ,CAST(100 * SUM(SaleAmount) OVER(PARTITION BY CompanyName)/ (select sum(SaleAmount) from dbo.[Sales Totals by Amount])  as decimal(11,2)) as 'TEST'
        FROM dbo.[Sales Totals by Amount] 
        GROUP BY CompanyName, OrderID, SaleAmount

---

当前的输出是什么？您期望得到什么？我希望获得单个订单的百分比份额，例如订单np.10524，销售金额3192,65，所有订单的总金额291026,66。SaleAmum/TotalAmount*100%

SUM（SaleAmum）OVER（）

返回与您的

Sumałkowita

仍然无法完成：（应类似于您现有的

百分比
计算：
转换（100*SaleAmount/SUM（SaleAmount）OVER（）为十进制（5,2））
当前的输出是什么？您期望得到什么？我希望获得单个订单的百分比份额，例如订单np.10524，销售金额3192,65，所有订单的总金额291026,66。SaleAmum/TotalAmount*100%
SUM（SaleAmum）OVER（）
返回与您的
Sumałkowita
仍然无法完成：（应类似于您现有的
百分比
计算：
CAST（100*SaleAmount/SUM（SaleAmount）OVER（）为十进制（5,2））