SQL Server insert與Select組合使用的方法
SQL Server insert語句是SQL中最常見也是最重要的語句之一,下文將為您解讀SQL Server insert與Select組合使用的方法,供您參考。
SQL Server中有示例數(shù)據(jù)庫Northwind。新建表Sales用于存儲(chǔ)銷售信息,字段為EmployeeID,ProductID,SupplierID,CustomerID,OrderDate,UnitPrice,Total,Quantity,Discount。
下面的語句從Orders,Order Details, Employees,Products, Suppliers, Customers表選擇相應(yīng)的
數(shù)據(jù)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);
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