SQLplus

I'm trying to count the number of 'classes' each student is taking, but I'm supposed to report back 0 if there are none. Right now, it just doesn't respond with the student.
Anyone out there been through a database class who solved this?

>>21
1) Sickle/Suckle (faggot)
2) Squill (faggot)
3) Sequel (faggot)
4) Ess-queue-elle  (faggot)
5) Other (faggot)