mysql全套修改密碼

8.0之後:
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '你的密碼';

5.7：
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '你的密碼';

之前修改密碼:
update mysql.user set authentication_string=password("你的密碼") where user="root";

刪除空賬戶：
delete from mysql.user where user='';

刷新：
flush privileges;