What tools/platforms/or softwares do you use to conduct sql interviews?

Right now we literally just have a google doc with 2 tables and then the questions. The interviewee will then just write pseudocode down.

I think it would be a lot easier to have something where you can actually like query the table as you're going, to see if you're on the right path and go step by step. How do other companies do this? Ideally it would be free but if it's pretty cheap that would be fine too.