MySql五个授权表的功能
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mysql.user
select host,user,password from mysql.user;grant all privileges on *.* to monty@localhost identified by '123456' with grant option;select host,user,password from mysql.user;display:
+-----------+------+-------------------------------------------+| host | user | password |+-----------+------+-------------------------------------------+| localhost | root | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 |+-----------+------+-------------------------------------------+1 row in set (0.00 sec)Query OK, 0 rows affected (0.01 sec)+-----------+-------+-------------------------------------------+| host | user | password |+-----------+-------+-------------------------------------------+| localhost | root | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 || localhost | monty | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |+-----------+-------+-------------------------------------------+2 rows in set (0.00 sec)
mysql.db
drop user monty@localhost;select host,db,user from mysql.db;grant all privileges on test.* to monty@localhost identified by '123456' with grant option;select host,user,db from mysql.db;display:
Query OK, 0 rows affected (0.00 sec)Empty set (0.00 sec)Query OK, 0 rows affected (0.00 sec)+-----------+-------+------+| host | user | db |+-----------+-------+------+| localhost | monty | test |+-----------+-------+------+1 row in set (0.00 sec)
mysql.host\
#未测试
mysql.tables_priv
select * from tables_priv;grant all privileges on test.student to monty@localhost identified by '123456' with grant option;select host,db,table_name,user from tables_priv;drop user monty@localhost;
display:Empty set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
+-----------+------+------------+-------+
| host | db | table_name | user |
+-----------+------+------------+-------+
| localhost | test | student | monty |
+-----------+------+------------+-------+
1 row in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)mysql.columns_priv
select * from columns_priv;grant select(sno) on test.student to monty@localhost identified by '123456' with grant option;select host,db,user,table_name,column_name,column_priv from columns_priv;drop user monty@localhost;display:Empty set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
+-----------+------+-------+------------+-------------+-------------+
| host | db | user | table_name | column_name | column_priv |
+-----------+------+-------+------------+-------------+-------------+
| localhost | test | monty | student | sno | Select |
+-----------+------+-------+------------+-------------+-------------+
1 row in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
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