表1:
+---------+
| imageid |
+---------+
| 56 |
| 162622 |
| 162623 |
| 162624 |
| 162625 |
| 162626 |
| 162627 |
| 162628 |
| 55 |
+---------+
表2:
+---------+
| imageid |
+---------+
| 55 |
| 162628 |
| 162627 |
| 162624 |
+---------+
如何将表1中不包含表2的数据取出来,忘回答.在线等待.
