SQL Server中Insert与Select的组合使用

SQL Server中有示例数据库Northwind。新建表Sales用于存储销售信息，字段为EmployeeID,PRoductID,SupplierID,CustomerID,OrderDate,UnitPrice,Total,Quantity,Discount。

下面的语句从Orders,Order Details, Employees,Products, Suppliers, Customers表选择相应的

数据插入Sales表：

insert into Sales(EmployeeID,ProductID,SupplierID,CustomerID,
OrderDate,UnitPrice,Total,Quantity,Discount)
select e.EmployeeID, p.ProductID, s.SupplierID,
c.CustomerID, o.OrderDate, od.UnitPrice,
od.Quantity*od.UnitPrice*(1.0-od.Discount)Total,
Od.Quantity, od.Discount
from Orders o,[Order Details] od, Employees e,
Products p, Suppliers s, Customers c
where (o.OrderID = od.OrderID) and
(o.EmployeeID = e.EmployeeID) and
(o.CustomerID = c.CustomerID) and
(od.ProductId = p.ProductID) and
(p.SupplierID = s.SupplierID);
go