Sql 订购最多产品的大多数客户以及productname和customername及其订购金额

这是里面有记录的桌子

Customers      91
Employees      10
OrderDetails  518
Orders        196
Products       77
Shippers        3
Suppliers      29

下面是我想的sql查询，但我不确定是否得到了正确的结果，我需要帮助

Select customername, productname, Sum(price * quantity) as price, max (quantity) as Qantity_ordered
From customers
Inner join orders
   On  customers.customerId = orders.customerid
Inner Join Orderdetails
    On orders.orderid = orderdetails.orderid
Inner Join Products
    On orderdetails.productid = products.productid
;

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如果我理解你的问题，你需要以下陈述：

Select customername, 
    productname, 
    max(Temp.price) as price,
    Temp.quantity as Qantity_ordered
FROM
(Select customerid, productid, Sum(price * quantity) as price, max (quantity) as Qantity_ordered
    From customers
    Inner join orders
    On  customers.customerId = orders.customerid
    Inner Join Orderdetails
    On orders.orderid = orderdetails.orderid
    Inner Join Products
    On orderdetails.productid = products.productid
    Group By customerid, productid) Temp
Inner Join customers 
On customerId = Temp.customerId
Inner join orders
On  Temp.customerId = orders.customerid
Inner Join Orderdetails
On orders.orderid = orderdetails.orderid
Inner Join Products p
On  p.productid = Temp.productid
where quantity = Temp.Qantity_ordered
Group By customername, 
   productname, 
   Temp.quantity 

---

如果我理解你的问题，你需要以下陈述：

Select customername, 
    productname, 
    max(Temp.price) as price,
    Temp.quantity as Qantity_ordered
FROM
(Select customerid, productid, Sum(price * quantity) as price, max (quantity) as Qantity_ordered
    From customers
    Inner join orders
    On  customers.customerId = orders.customerid
    Inner Join Orderdetails
    On orders.orderid = orderdetails.orderid
    Inner Join Products
    On orderdetails.productid = products.productid
    Group By customerid, productid) Temp
Inner Join customers 
On customerId = Temp.customerId
Inner join orders
On  Temp.customerId = orders.customerid
Inner Join Orderdetails
On orders.orderid = orderdetails.orderid
Inner Join Products p
On  p.productid = Temp.productid
where quantity = Temp.Qantity_ordered
Group By customername, 
   productname, 
   Temp.quantity 

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请用您正在使用的数据库标记您的问题。您的问题还可以通过示例数据和期望的结果更加清晰。请用您正在使用的数据库标记您的问题。通过样本数据和期望的结果，您的问题也会更清楚。