MySQL8的root帐号授权

执行下面的命令MySQL8会报错：

 grant all privileges on db_name.* to 'root'@'%'
  ### Cause: java.sql.SQLSyntaxErrorException: Access denied for user 'root'@'%' to database 'db_name'

解决办法：

SELECT `User`, `Grant_priv` FROM `mysql`.`user` WHERE `User` = 'root';
  UPDATE `mysql`.`user` SET `Grant_priv` = 'Y' WHERE `User` = 'root';
  grant all privileges on *.* to 'root'@'%';
  FLUSH PRIVILEGES;

MySQL8的root远程授权

CREATE USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '密码';
  GRANT ALL ON *.* TO 'root'@'%';
  FLUSH PRIVILEGES;