1. 使用 INSERT 和指定的列，将你自己添加到 Customers 表中。明确列出要添加哪几列，且仅需列出你需要的列。

 INSERT INTO Customers(cust_id,cust_name,cust_address,cust_city,cust_state,cust_zip,cust_country,cust_contact,cust_email)
VALUES(1000000010,'Zoey','123 Any Street','Macau','NY','11111','China',NULL,NULL);

--官方解答
-- Obviously replace the details with your own
INSERT INTO Customers(cust_id,cust_name,cust_address,cust_city,cust_state,cust_zip,cust_country,cust_email)
VALUES(1000000042,'Ben''s Toys','123 Main Street','Oak Park','MI','48237','USA','ben@fortabbwpc.wpcomstaging.com');

2. 备份 Orders 表和 OrderItems 表。

-- MySQL, MariaDB, Oracle, PostgreSQL, SQLite
CREATE TABLE OrdersBackup AS SELECT * FROM Orders;
CREATE TABLE OrderItemsBackup AS SELECT * FROM OrderItems;
-- SQL Server
SELECT * INTO OrdersBackup FROM Orders;
SELECT * INTO OrderItemsBackup FROM OrderItems;