T-sql创建表，插入数据

SET NOCOUNT ON;
USE hibernateSqlServer
GO
IF OBJECT_ID('Orders') IS NOT NULL
    DROP TABLE Orders;
GO
IF OBJECT_ID('Customers') IS NOT NULL
    DROP TABLE Customers
GO
CREATE TABLE Customers
(customerid CHAR(5) NOT NULL PRIMARY KEY,
city VARCHAR(10) NOT NULL);
INSERT INTO Customers(customerid,city) VALUES('FISSA','Madrid');
INSERT INTO Customers(customerid,city) VALUES('FRNDO','Madrid');
INSERT INTO Customers(customerid,city) VALUES('KRLOS','Madrid');
INSERT INTO Customers(customerid,city) VALUES('MRPHS','Zion');
CREATE TABLE Orders
(
  orderid INT NOT NULL PRIMARY KEY,
  customerid CHAR(5) NULL REFERENCES Customers(customerid)
);
INSERT INTO Orders(orderid,customerid) VALUES(1,'FRNDO');
INSERT INTO Orders(orderid,customerid) VALUES(2,'FRNDO');
INSERT INTO Orders(orderid,customerid) VALUES(3,'KRLOS');
INSERT INTO Orders(orderid,customerid) VALUES(4,'KRLOS');
INSERT INTO Orders(orderid,customerid) VALUES(5,'KRLOS');
INSERT INTO Orders(orderid,customerid) VALUES(6,'MRPHS');
INSERT INTO Orders(orderid,customerid) VALUES(7,NULL);