mysql> select * from a
; 
+----+------+--------------+
| id | name | descri       |
+----+------+--------------+
|  1 | a1   | 我是第一个a1 |
|  2 | a2   | 我是第一个a2 |
|  3 | a3   | 我是a3       |
|  4 | a1   | 我是第二个a1 |
|  5 | a2   | 我是第二个a2 |
+----+------+--------------+

5 rows in set

> select a1.* from a a1 right join (select max(id) id from a group by name) a2 on a1.id = a2.id where a1

.id is not null; +----+------+--------------+ | id | name | descri       | +----+------+--------------+ |  3 | a3   | 我是a3       | |  4 | a1   | 我是第二个a1 | |  5 | a2   | 我是第二个a2 | +----+------+--------------+ 3 rows in set