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CyC2018 2020-05-27 01:35:05 +08:00
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docs/notes/SQL.md
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@ -483,7 +483,7 @@ FROM tablea AS A NATURAL JOIN tableb AS B;
检索所有顾客的订单信息，包括还没有订单信息的顾客。 检索所有顾客的订单信息，包括还没有订单信息的顾客。
```sql ```sql
SELECT Customers.cust_id, Orders.order_num SELECT Customers.cust_id, Customer.cust_name, Orders.order_id
FROM Customers LEFT OUTER JOIN Orders FROM Customers LEFT OUTER JOIN Orders
ON Customers.cust_id = Orders.cust_id; ON Customers.cust_id = Orders.cust_id;
``` ```

2
notes/SQL.md
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@ -483,7 +483,7 @@ FROM tablea AS A NATURAL JOIN tableb AS B;
检索所有顾客的订单信息，包括还没有订单信息的顾客。 检索所有顾客的订单信息，包括还没有订单信息的顾客。
```sql ```sql
SELECT Customers.cust_id, Orders.order_num SELECT Customers.cust_id, Customer.cust_name, Orders.order_id
FROM Customers LEFT OUTER JOIN Orders FROM Customers LEFT OUTER JOIN Orders
ON Customers.cust_id = Orders.cust_id; ON Customers.cust_id = Orders.cust_id;
``` ```