Question

我正在尝试在sql中实现一个透视表，但它无法正常工作。我目前拥有以下内容：

WITH Pivoted
AS
(
select vg.ParentProductCategoryName, c.CompanyName, sd.LineTotal
FROM SalesLT.Product p join SalesLT.vGetAllCategories vg on p.ProductCategoryID = vg.ProductCategoryID
Join SalesLT.SalesOrderDetail sd on p.ProductID = sd.ProductID
JOIN SalesLT.SalesOrderHeader as soh ON sd.SalesOrderID = soh.SalesOrderID
JOIN SalesLT.Customer AS c ON soh.CustomerID = c.CustomerID
pivot(Sum([LineTotal]) for [ParentProductCategoryName] in (Accessories, Bikes, Clothing, Components)) AS sales
)
select * from Pivoted p;
;

我收到错误：

多部分“列名称”标识符无法限制。

如果我删除了选择部分中的列名并改为使用*，我得到：

为......
指定了多次“ProductCategoryID”列

我想要的是根据每个CompanyName（在客户中）显示每个ParentProductCategoryName（在vGetAllCategories中）所声明的（以列为单位）的总收入（由SalesOrderDetail表中的lineTotal总和指定））。如何更好地实现这一目标？感谢。

Answer 1

不确定为什么你需要一个CTE ...但是将你的JOINS放在一个派生表中并转而使用派生表。

SELECT  *
FROM    (SELECT vg.ParentProductCategoryName,
                c.CompanyName,
                sd.LineTotal
         FROM   SalesLT.Product p
                JOIN SalesLT.vGetAllCategories vg ON p.ProductCategoryID = vg.ProductCategoryID
                JOIN SalesLT.SalesOrderDetail sd ON p.ProductID = sd.ProductID
                JOIN SalesLT.SalesOrderHeader AS soh ON sd.SalesOrderID = soh.SalesOrderID
                JOIN SalesLT.Customer AS c ON soh.CustomerID = c.CustomerID
        ) t 
PIVOT(  SUM([LineTotal]) 
        FOR [ParentProductCategoryName] IN (Accessories,Bikes,Clothing,Components) ) AS sales

或者您可以将SUM聚合与CASE

一起使用

SELECT  c.CompanyName,
        Accessories = SUM(CASE WHEN vg.ParentProductCategoryName = 'Accessories' THEN sd.LineTotal END),
        Bikes       = SUM(CASE WHEN vg.ParentProductCategoryName = 'Bikes' THEN sd.LineTotal END),
        Clothing    = SUM(CASE WHEN vg.ParentProductCategoryName = 'Clothing' THEN sd.LineTotal END),
        Components  = SUM(CASE WHEN vg.ParentProductCategoryName = 'Components' THEN sd.LineTotal END)
FROM    SalesLT.Product p
        JOIN SalesLT.vGetAllCategories vg ON p.ProductCategoryID = vg.ProductCategoryID
        JOIN SalesLT.SalesOrderDetail sd ON p.ProductID = sd.ProductID
        JOIN SalesLT.SalesOrderHeader AS soh ON sd.SalesOrderID = soh.SalesOrderID
        JOIN SalesLT.Customer AS c ON soh.CustomerID = c.CustomerID
GROUP BY c.CompanyName

Table pivot的Sql错误

1 个答案: