在MySQL中使用左联接组合两个表

在MySQL中使用左联接组合两个表,mysql,Mysql,我有两张桌子 表1 +-------+-------+ | NAME | PRICE | +-------+-------+ | ITEM1 | 100 | +-------+-------+ | ITEM2 | 200 | +-------+-------+ | ITEM3 | 300 | +-------+-------+ 表2重复项目1和项目2 +-------+--------+---------+ | NAME | SUFFIX | CODE |

我有两张桌子

表1

+-------+-------+
| NAME  | PRICE |
+-------+-------+
| ITEM1 |  100  |
+-------+-------+
| ITEM2 |  200  |
+-------+-------+
| ITEM3 |  300  |
+-------+-------+
表2重复项目1和项目2

    +-------+--------+---------+
    | NAME  | SUFFIX | CODE    |
    +-------+--------+---------+
    | ITEM1 | 1      | ITEM1_1 |
    +-------+--------+---------+
    | ITEM1 | 2      | ITEM1_2 |
    +-------+--------+---------+
    | ITEM2 | 1      | ITEM2_1 |
    +-------+--------+---------+
如何使用mySQL实现这个结果

+-------+-------+----------+
| NAME  | PRICE |   NAME2  |
+-------+-------+----------+
| ITEM1 |  100  |  ITEM1   |
+-------+-------+----------+
| ITEM2 |  200  |  ITEM2   |
+-------+-------+----------+
| ITEM3 |  300  |  NULL    |
+-------+-------+----------+

我想从表1中获取不在表2中的元素。在本例中,我想要获取的元素是ITEM3。我可以用LEFT JOIN执行此操作吗?

要么您提供了错误的结果集,要么您编写了其他内容。您需要表1中的所有内容,并且只需要表2中不存在的内容??
select * from table1 t1
left outer join table2 t2 on t1.name = t2.name
where t2.name is null
Select * from table1 s Left join table2 as t on s.NAME=t.NAME where t.NAME IS NULL