MySQL报“Access denied for user 'root'@'%' to database”错误的解决方法执行 GRANT ALL PRIVILEGES ON test.* TO 'test_user'@'%' WITH GRANT OPTION 报错;错误原因user表中 'root'@'%' 没有grant的权限解决方法- **修改grant权限**
```
update mysql.user set Grant_priv='Y',Super_priv='Y' where user = 'roo