MySQL5.7如何更改用户名密码

ALTER USER ‘root’@‘localhost’ IDENTIFIED BY ‘123456’; FLUSH PRIVILEGES; 1 2 navicat 连接 mysql 出现Client does not support authentication protocol requested by server cmd登录，执行以下sql：

ALTER USER ‘root’@‘localhost’ IDENTIFIED WITH mysql_native_password BY ‘123456’; FLUSH PRIVILEGES;