MySQL查询用户权限的方法总结

介绍两种查看MySQL 用户权限的两种方法

1、使用MySQL grants命令

									mysql> show grants for username@localhost;

									+---------------------------------------------------------------------+

									| Grants for root@localhost |

									+---------------------------------------------------------------------+

									| GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION |

									+---------------------------------------------------------------------+

需要注意的是：

● username和ip的组合需要是在mysql.user表中存在的，具体可以通过 select * from mysql.user 命令查看

● ip地址如果是通配符格式需要加引号，例如：show grants for root@'172.%';

2、使用MySQL select命令

									mysql> select * from mysql.user where user='root' and host='localhost' \G;

									*************************** 1. row ***************************

									Host: localhost

									User: root

									Password: **********************

									Select_priv: Y

									Insert_priv: Y

									Update_priv: Y

									Delete_priv: Y

									Create_priv: Y

									Drop_priv: Y

									Reload_priv: Y

									Shutdown_priv: Y

									Process_priv: Y

									File_priv: Y

									Grant_priv: Y

									References_priv: Y

									Index_priv: Y

									Alter_priv: Y

									Show_db_priv: Y

									Super_priv: Y

									Create_tmp_table_priv: Y

									Lock_tables_priv: Y

									Execute_priv: Y

									Repl_slave_priv: Y

									Repl_client_priv: Y

									Create_view_priv: Y

									Show_view_priv: Y

									Create_routine_priv: Y

									Alter_routine_priv: Y

									Create_user_priv: Y

									Event_priv: Y

									Trigger_priv: Y

									Create_tablespace_priv: Y

									ssl_type:

									ssl_cipher:

									x509_issuer:

									x509_subject:

									max_questions: 0

									max_updates: 0

									max_connections: 0

									max_user_connections: 0

									plugin: mysql_native_password

									authentication_string:

									password_expired: N

									1 row in set (0.01 sec)

知识点扩展：

我们来创建一个测试账号test，授予表层级的权限

									mysql> drop user test;

									Query OK, 0 rows affected (0.00 sec)

									mysql> flush privileges;

									Query OK, 0 rows affected (0.00 sec)

									mysql> grant all on MyDB.kkk to test@'%' identified by 'test';

									Query OK, 0 rows affected (0.01 sec)

									mysql> 

									mysql> show grants for test;

									+-----------------------------------------------------------------------------------------------------+

									| Grants for test@% |

									+-----------------------------------------------------------------------------------------------------+

									| GRANT USAGE ON *.* TO 'test'@'%' IDENTIFIED BY PASSWORD '*94BDCEBE19083CE2A1F959FD02F964C7AF4CFC29' |

									| GRANT ALL PRIVILEGES ON `MyDB`.`kkk` TO 'test'@'%' |

									+-----------------------------------------------------------------------------------------------------+

									2 rows in set (0.00 sec)

									mysql> select * from mysql.tables_priv\G;

									*************************** 1. row ***************************

									Host: %

									Db: MyDB

									User: test

									Table_name: kkk

									Grantor: root@localhost

									Timestamp: 0000-00-00 00:00:00

									Table_priv: Select,Insert,Update,Delete,Create,Drop,References,Index,Alter,Create View,Show view,Trigger

									Column_priv: 

									1 row in set (0.01 sec)

									ERROR: 

									No query specified

									mysql> <br>

我们来创建一个测试账号test，授予列层级的权限

									mysql> drop user test;

									Query OK, 0 rows affected (0.00 sec)

									mysql> flush privileges;

									Query OK, 0 rows affected (0.00 sec)

									mysql> grant select (id, col1) on MyDB.TEST1 to test@'%' identified by 'test';

									Query OK, 0 rows affected (0.01 sec)

									mysql> flush privileges;

									Query OK, 0 rows affected (0.00 sec)

									mysql> 

									mysql> select * from mysql.columns_priv;

									+------+------+------+------------+-------------+---------------------+-------------+

									| Host | Db | User | Table_name | Column_name | Timestamp | Column_priv |

									+------+------+------+------------+-------------+---------------------+-------------+

									| % | MyDB | test | TEST1 | id | 0000-00-00 00:00:00 | Select |

									| % | MyDB | test | TEST1 | col1 | 0000-00-00 00:00:00 | Select |

									+------+------+------+------------+-------------+---------------------+-------------+

									2 rows in set (0.00 sec)

									mysql> show grants for test;

									+-----------------------------------------------------------------------------------------------------+

									| Grants for test@% |

									+-----------------------------------------------------------------------------------------------------+

									| GRANT USAGE ON *.* TO 'test'@'%' IDENTIFIED BY PASSWORD '*94BDCEBE19083CE2A1F959FD02F964C7AF4CFC29' |

									| GRANT SELECT (id, col1) ON `MyDB`.`TEST1` TO 'test'@'%' |

									+-----------------------------------------------------------------------------------------------------+

									2 rows in set (0.00 sec)

									mysql> <br>