mysql批量刷新用户密码

不知道用户密码，并且不改变用户密码的情况下，批量刷新MySQL数据库用户的密码

select concat(\'alter user \\'\',user,\'\\'@\\'\',host,\'\\' identified by \\'\',authentication_string,\'\\';\') as change_password from mysql.user;

扩展：

在其他MySQL实例创建与本实例密码相同的用户

select concat(\'create user \\'\',user,\'\\'@\\'\',host,\'\\' identified by password \\'\',authentication_string,\'\\';\') as create_user from mysql.user;

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