MySQL 5.7的角色功能

MySQL 5.7的角色功能：创建用户并授予用户角色功能： mysql> create user 'junior'@'127.0.0.1' identified by '123'; Query OK, 0 rows affected (0.01 sec) mysql> create user 'tom'@'127.0.0.1' identified by '123'; Query OK, 0 rows affected (0.00 sec) mysql> create user 'jim'@'127.0.0.1' identified by '123'; Query OK, 0 rows affected (0.01 sec) mysql> grant proxy on 'junior'@'127.0.0.1' to 'tom'@'127.0.0.1'; Query OK, 0 rows affected (0.01 sec) mysql> grant proxy on 'junior'@'127.0.0.1' to 'jim'@'127.0.0.1'; Query OK, 0 rows affected (0.00 sec) mysql> grant select on *.* to 'junior'@'127.0.0.1'; Query OK, 0 rows affected (0.00 sec) mysql> show grants for 'junior'@'127.0.0.1'; +---------------------------------------------+ | Grants for junior@127.0.0.1                 | +---------------------------------------------+ | GRANT SELECT ON *.* TO 'junior'@'127.0.0.1' | +---------------------------------------------+ 1 row in set (0.00 sec) mysql> show grants for 'jim'@'127.0.0.1'; +----------------------------------------------------------+ | Grants for jim@127.0.0.1                                 | +----------------------------------------------------------+ | GRANT USAGE ON *.* TO 'jim'@'127.0.0.1'                  | | GRANT PROXY ON 'junior'@'127.0.0.1' TO 'jim'@'127.0.0.1' | +----------------------------------------------------------+ 2 rows in set (0.00 sec) mysql> show grants for 'tom'@'127.0.0.1'; +----------------------------------------------------------+ | Grants for tom@127.0.0.1                                 | +----------------------------------------------------------+ | GRANT USAGE ON *.* TO 'tom'@'127.0.0.1'                  | | GRANT PROXY ON 'junior'@'127.0.0.1' TO 'tom'@'127.0.0.1' | +----------------------------------------------------------+ 2 rows in set (0.00 sec) mysql> use mysql; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> select * from proxies_priv; +-----------+------+--------------+--------------+------------+----------------------+---------------------+ | Host      | User | Proxied_host | Proxied_user | With_grant | Grantor              | Timestamp           | +-----------+------+--------------+--------------+------------+----------------------+---------------------+ | localhost | root |              |              |          1 | boot@connecting host | 0000-00-00 00:00:00 | | 127.0.0.1 | tom  | 127.0.0.1    | junior       |          0 | root@localhost       | 0000-00-00 00:00:00 | | 127.0.0.1 | jim  | 127.0.0.1    | junior       |          0 | root@localhost       | 0000-00-00 00:00:00 | +-----------+------+--------------+--------------+------------+----------------------+---------------------+ 3 rows in set (0.00 sec)