两个表中包含值的不匹配行

I have two tables T1:

我有两张桌子T1:

+----+-----+--------------------+----------+
| ID | emp |     manager        |     proj |
+----+-----+--------------------+----------+
|  1 | Sam |     Tom            |       aa |
|  1 | Sam |     Tom            |       bb |
|  1 | Sam |     Tom            |       cc |
|  1 | Sam |     Tom            |       dd |
+----+-----+--------------------+----------+
+----+-----