Navicat Premium打开数据库出现：1449 - The user specified as a definer ('mysql.infoschema'@'localhost') does not exist
由于mysql_upgrade 功能在 mysql8.0 之后版本已经停用了，所以用一下命令即可 ``` mysql -u root -p #你的root密码 use mysql create user 'mysql.infoschema'@'%' identified by '密码'; grant all privileges on *.* to 'mysql.infosch