ERROR 1062 (23000): Duplicate entry '%-root' for key 'PRIMARY'

MySQL> update user set host='%' where user = 'root';
ERROR 1062 (23000): Duplicate entry '%-root' for key 'PRIMARY'
然后查看了下數據庫的host信息如下：
MySQL> select host from user where user = 'root';
+-----------------------+
| host |
+-----------------------+
| % |
| 127.0.0.1 |
| localhost.localdomain |
+-----------------------+
3 rows in set (0.00 sec)
host已經有了%這個值，所以直接運行命令：
復制代碼 代碼如下:

MySQL>flush privileges;

再用MySQL administrator連接成功！！