DELETE FROM的问题

Question

我尝试删除一些数据，这是我的表的模型：

 --------------------
|       TABLE1       |
 --------------------
| idnode |idattribute|
|____________________|
|6414224 | 109       |
|6912048 | 74        |
|5632108 | 109       |
|5097234 | 109       |
|9874625 | 9         |


 --------------------
|       TABLE2       |
 --------------------
| idnode | value     |
|____________________|
|6414224 | BLABLA    |
|6414224 | BLA       |
|6414224 | BL        |
|5097234 | 14524     |
|5097234 | hihi      |

我需要在表2中删除所有'idnode'，它们在表1中有'idattribute'= 109。

所以，这是我的查询，但它不起作用：

DELETE FROM table2 WHERE idnode IN 
(SELECT TAB1.idnode FROM TABLE2 as TAB2, TABLE1 as TAB1 where TAB2.idnode = TAB1.idnode and TAB1.idattribute = 109)

我收到此错误：您无法在FROM子句

中为更新指定目标表'TABLE2'

有你的想法吗？

Answer 1

DELETE FROM table2 WHERE idnode IN 
(SELECT idnode FROM TABLE1 WHERE idattribute = 109)

这个怎么样？

Answer 2

DELETE table2
    FROM table1 JOIN table2 USING (idnode)
    WHERE table1.idattribute = 109

将是另一种选择。