mysql - 如何在 MySql 中连接两个表时创建视图

Question

我需要创建一个名为 customer_addresses 的视图，显示每个客户的送货地址和账单地址。此视图应从客户表中返回这些列：

customer_id  
email_address  
last_name  
first_name.

此视图应从 Addresses 表中返回这些列：

bill_line1  
bill_line2  
bill_city  
bill_state  
bill_zip  
ship_line1  
ship_line2  
ship_city  
ship_state  
ship_zip  

此视图中的行应按 last_name 列排序，然后是 first_name 列。

备注
customers 表包括以下列：customer_id、email_address、password、first_name、last_name、shipping_address_id 和 billing_address_id

Addresses 表包括以下列：address_id、customer_id、line1、line2、city、state、zip_code、phone

我试图张贴两张桌子的照片，但我在这里是全新的，还没有 10 个代表。由于将 billing_id / shipping_id 转换为实际地址，我主要在 join 语句中遇到问题。

Answer 1

加入“地址”表两次，将一个链接到帐单地址 ID，另一个链接到送货地址 ID。

CREATE VIEW CUSTOMER_ADDRESSES AS 
SELECT cust.customer_id, cust.last_name, cust.first_name, cust.email_address
bill.line1 as bill_line1, bill.line2 as bill_line2, bill.city as bill_city, 
bill.state as bill_state, bill.zip as bill_zip, 
ship.line1 as ship_line1, ship.line2 as ship_line2, ship.city as ship_city, 
ship.state as ship_state, ship.zip as ship_zip 
FROM customers cust, addresses bill, addresses ship 
WHERE cust.shipping_address_id = ship.address_id 
and cust.billing_address_id = bill.address_id