计算每个城市一个类别的支付百分比

Question

我有这个数据库

并且我们需要计算每个城市每个类别的支付百分比我正在尝试这样做

    select SUM(ShipQty), SUM(ShipQty)*100/(select SUM(ShipQty) from InvoiceLineitemes 
inner join Invoice on InvoiceLineitemes.InvoiceNumber=Invoice.InvoiceNumber 
inner join Customers on Invoice.SoldToCustomer=Customers.CustomerNumber group by City),
Category,city from InvoiceLineitemes
inner join Inventory on InvoiceLineitemes.ItemNumber=Inventory.ItemNumber 
inner join Invoice on InvoiceLineitemes.InvoiceNumber=Invoice.InvoiceNumber 
inner join Customers on Invoice.SoldToCustomer=Customers.CustomerNumber 
group by Category ,City

但我遇到了这个错误

消息 512，级别 16，状态 1，第 1 行子查询返回了 1 个以上的值。当子查询跟在 =、!=、<、<=、>、>= 或子查询用作表达式时，这是不允许的。

Answer 1

据推测，您想要部分与整体的比例。这最好使用 window 函数：

select Category, city,
       sum(ShipQty),
       sum(ShipQty) * 100.0 / sum(sum(shipqty)) over (partition by city)
from InvoiceLineitemes ili join
     Inventory i
     on ili.ItemNumber = i.ItemNumber join
     Invoice inv
     on ili.InvoiceNumber = inv.InvoiceNumber join
     Customers c
     on inv.SoldToCustomer = c.CustomerNumber 
group by Category, City;

请注意，table 别名还使查询更易于编写和阅读。

计算每个城市一个类别的支付百分比

calculate payment percentage of one category for each city

sql

join

percentage