How to query data in backups?
My advice would be to just restore the entire backup. In my current environment, someone accidentally screws up some table once every few months. It just happens. Of course, it always hits our biggest database. 200GB backup file, 1+TB when fully restored. It is just easier to restore a copy somewhere, find the specific table we need, and just update that specific data. The whole process takes about an hour or so. I doubt any other solution would be quicker, worth the extra financial costs, or added complexity.