mysql5.7创建用户授权删除用户撤销授权
一, 创建用户:
命令:
CREATE USER 'username'@'host' IDENTIFIED BY 'password'; |
例子:
CREATE USER 'dog'@'localhost' IDENTIFIED BY 'password'; CREATE USER 'pig'@'192.168.1.100' IDENDIFIED BY 'password'; CREATE USER 'pig'@'192.168.1.%' IDENDIFIED BY 'password'; CREATE USER 'pig'@'%' IDENTIFIED BY 'password'; CREATE USER 'pig'@'%' IDENTIFIED BY ''; CREATE USER 'pig'@'%'; |
二,授权:
命令:
GRANT privileges ON databasename.tablename TO 'username'@'host' |
说明: privileges - 用户的操作权限,如SELECT , INSERT , UPDATE 等(详细列表见该文最后面).如果要授予所的权限则使用ALL.;databasename - 数据库名,tablename-表名,如果要授予该用户对所有数据库和表的相应操作权限则可用*表示, 如*.*.
例子:
GRANT SELECT, INSERT ON test.user TO 'pig'@'%';
GRANT ALL ON *.* TO 'pig'@'%';
|
GRANT privileges ON databasename.tablename TO 'username'@'host' WITH GRANT OPTION; |
权限信息用user、db、host、tables_priv和columns_priv表被存储在MySQL数据库中(即在名为mysql的数据库中)。
权限 列 Context
select Select_priv 表
insert Insert_priv 表
update Update_priv 表
delete Delete_priv 表
index Index_priv 表
alter Alter_priv 表
create Create_priv 数据库、表或索引
drop Drop_priv 数据库或表
grant Grant_priv 数据库或表
references References_priv 数据库或表
reload Reload_priv 服务器管理
shutdown Shutdown_priv 服务器管理
process Process_priv 服务器管理
file File_priv 在服务器上的文件存取
三.设置与更改用户密码
命令:
SET PASSWORD FOR 'username'@'host' = PASSWORD('newpassword');如果是当前登陆用户用SET PASSWORD = PASSWORD("newpassword");
|
SET PASSWORD FOR 'pig'@'%' = PASSWORD("123456");
|
四.撤销用户权限
命令:
REVOKE privilege ON databasename.tablename FROM 'username'@'host'; |
说明: privilege, databasename, tablename - 同授权部分.
例子: REVOKE SELECT ON *.* FROM 'pig'@'%';
注意: 假如你在给用户'pig'@'%'授权的时候是这样的(或类似的):GRANT SELECT ON test.user TO 'pig'@'%', 则在使用REVOKE SELECT ON *.* FROM 'pig'@'%';命令并不能撤销该用户对test数据库中user表的SELECT 操作.相反,如果授权使用的是GRANT SELECT ON *.* TO 'pig'@'%';则REVOKE SELECT ON test.user FROM 'pig'@'%';命令也不能撤销该用户对test数据库中user表的Select 权限.
具体信息可以用命令SHOW GRANTS FOR 'pig'@'%'; 查看.
五.删除用户
命令:
DROP USER 'username'@'host'; |
mysql> show grants for 'test01'@'localhost'; +-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Grants for test01@localhost | +-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | GRANT USAGE ON *.* TO 'test01'@'localhost' | | GRANT INSERT, UPDATE, DELETE, CREATE, DROP, REFERENCES, INDEX, ALTER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, EVENT, TRIGGER ON `test001`.* TO 'test01'@'localhost' | +-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 2 rows in set (0.01 sec) mysql> show grants for 'test02'@'localhost'; +-------------------------------------------------------------+ | Grants for test02@localhost | +-------------------------------------------------------------+ | GRANT USAGE ON *.* TO 'test02'@'localhost' | | GRANT ALL PRIVILEGES ON `test001`.* TO 'test02'@'localhost' | +-------------------------------------------------------------+ 2 rows in set (0.00 sec) |
以上所述是小编给大家介绍的mysql5.7创建用户授权删除用户撤销授权，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。
原文链接：http://blog.csdn.net/u010533843/article/details/54926186
