In SO site both real users and temporary users can add a new questions.

I assume each user type has a different table. My question is how can I attach the question to the right user?

I assuming the temp users have their own table from the following reasons:

1. Temp users don't have all the data that real users have. like: email, password, and all users details.
2. On the other hand, temp users are a lot more then real users.

So it make more sense to have they in their own table.