- RIGHT [OUTER] JOIN 包含右边表的全部行，如果与左表中的数据列没有匹配，则添加为空值 NULL 数据
语法
table_reference
RIGHT [OUTER] JOIN table_reference
ON search_condition
| USING (column_name [, column_name] ...)
[WHERE where_condition];
|
参数 |
说明 |
||||||
|
table_reference{ table_factor | joined_table } |
|
||||||
|
search_condition |
条件语句 |
||||||
|
column_name |
数据列名 |
||||||
|
tbl_name |
数据表名 |
||||||
|
[WHERE where_condition] |
WHERE条件语句 |
示例
SELECT Person.name,Order.orderNo
FROM Person
RIGHT JOIN Order
ON Person.id=Order.id
运行结果如下：
|
name |
orderNo |
|
Adams |
22456 |
|
Adams |
24562 |
|
Carter |
77895 |
|
Carter |
44678 |
|
NULL |
34764 |
示例
SELECT Person.name,Order.orderNo
FROM Person
RIGHT JOIN Order
ON Person.id=Order.id
WHERE Order.orderNo = 34764
运行结果如下：
|
name |
orderNo |
|
NULL |
34764 |