查找每个项目的所有数量之和

Question

我使用NorthWind数据库，我的目的是在一行中选择每个城市的发货订单总数。对不起虚拟问题，但我是Sql新手

select e.FirstName , o.ShipCity, od.UnitPrice,Sum(od.Quantity), 
sum(od.Quantity*od.UnitPrice) from [Order Details] as od 
inner join Products as p on p.ProductID=od.ProductID
inner join Orders as o on o.OrderID =od.OrderID
inner join Employees as e on e.EmployeeID=o.EmployeeID
where o.ShipCity= 'Graz' and o.isCanceled !=1 and e.FirstName ='Nancy'
group by e.FirstName , o.ShipCity,od.UnitPrice

Answer 1

=>

select e.firstName , o.ShipCity , sum ( od.Quantity) from [ order Details ] as od 
inner join Orders  as o on o.OrderId = od.OrderId
inner join Employees as e on e.employeeID=o.EmployeeID
where o.shipcity = 'Graz'and o.iscanceled !=1 and e.firstname='Nancy'
group by e.firstName , o.ShipCity 

Answer 2

要获取每个城市的金额，您必须从选择中删除FirstName和UnitPrice。

select o.ShipCity,
   Sum(od.Quantity), 
   sum(od.Quantity*od.UnitPrice) 
from [Order Details] as od 
inner join Products as p on p.ProductID=od.ProductID
inner join Orders as o on o.OrderID =od.OrderID
inner join Employees as e on e.EmployeeID=o.EmployeeID
where o.ShipCity= 'Graz' and o.isCanceled !=1 and e.FirstName ='Nancy'
group by o.ShipCity