SQLyog连接数据库报错plugin caching_sha2_password could not be loaded

卸载掉mysql5.5版本后新装 8.0.20版本后报的错误

打开cmd：通过 mysql -uroot -p 进入mysql依次执行下面语句

# 修改加密规则 

ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER;

# 更新一下用户的密码 

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root';

# 刷新权限

FLUSH PRIVILEGES;

# 重置密码

alter user 'root'@'localhost' identified by 'root';