C170 Performance Assessment I'm stuck sql fiddle won't work.

I'm stuck on exercise 3 on the performance assessment. I build code to create 4 tables. I enter it in SQLfiddle and it keep saying either Gateway time out or "Can't create database 'db_9_d073b'; database exists". What does that mean ya'll? I'm stuck at this part and so frustrated. In the video the coarse mentor did it so easily in SQLfiddle without any problems. When I do it it keep getting that error. Can any body help me?
Comments
I did everything with a local mysql installation in order not to depend on such crap.
Then you create database (look up this command's precise syntax in the course).
Then do 'use database yourdatabasename'.
Then proceed as usual, creating/manipulating/accessing tables and entries.
You are probably not in the right DB. Change it using 'use database name' command.