I have the following database situation:

```
wp_users (user table generated by wordpress)
ID | user_login | ... 

wp_sp_user (extension to the wp_users table)
ID (FK) | surname | address | ... 

```

Now I've already been trying for hours to "fuse" those two tables into one single `User` entity, e.g:

```
class User {
  var ID;
  var user_login;
  var surname;
  var address;
  ...
}

```

Is there any way to accomplish such a mapping without modifying the `wp_user` table (which I don't want to do for updating reasons)?