参考：
https://blog.csdn.net/Light_Breeze/article/details/82070222
https://www.jianshu.com/p/d979df2791e9
# use mysql; (无password字段的版本) # update user set authentication_string=PASSWORD("密码") where user='root'; (有password字段的版本) # update user set password=password('密码') where user='root'; # update user set plugin="mysql_native_password"; # flush privileges; # quit;