创建用户
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| CREATE USER 'username'@'host' IDENTIFIED BY 'password';
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说明:
username:你将创建的用户名
host:指定该用户在哪个主机上可以登陆,如果是本地用户可用localhost,如果想让该用户可以从任意远程主机登陆,可以使用通配符%
password:该用户的登陆密码,密码可以为空,如果为空则该用户可以不需要密码登陆服务器
例子:
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| CREATE USER 'pig'@'localhost' IDENTIFIED BY '123456'; CREATE USER 'pig'@'%' IDENTIFIED BY '123456'; CREATE USER 'pig'@'%' IDENTIFIED BY ''; CREATE USER 'pig'@'%';
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用户授权
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| GRANT privileges ON databasename.tablename TO 'username'@'host'
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说明:
privileges:用户的操作权限,如SELECT,INSERT,UPDATE等,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:
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| GRANT SELECT, INSERT ON test.user TO 'pig'@'%'; GRANT ALL ON *.* TO 'pig'@'%'; GRANT ALL ON test.* TO 'pig'@'%';
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注意:
用以上命令授权的用户不能给其它用户授权,如果想让该用户可以授权,用以下命令:
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| GRANT privileges ON databasename.tablename TO 'username'@'host' WITH GRANT OPTION;
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设置或更改用户密码
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| SET PASSWORD FOR 'username'@'host' = PASSWORD('newpassword');
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如果是当前登陆用户用:
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| SET PASSWORD = PASSWORD("newpassword");
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例子:
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| SET PASSWORD FOR 'pig'@'%' = PASSWORD("123456"); SET PASSWORD = PASSWORD("123456");
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撤销用户权限
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| REVOKE privilege ON databasename.tablename FROM 'username'@'host';
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具体信息可以用命令查看:
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| SHOW GRANTS FOR 'username'@'host';
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删除用户
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| DROP USER 'username'@'host';
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友情链接:https://www.cnblogs.com/sos-blue/p/6852945.html