as BobTheLantern said this issue is not reproducible with the code snippet you provided. you may have inadvertently modified the sample tests. feel free to reply here if you still encounter a problem.
You link the SQL IN operator page for help, but in the end I had to explicitly AVOID using 'IN' and do an '=' for it to work. The 'IN' was specifically the reason my code failed with your test, when (and I checked) code was correct. Frustrating.
From my understanding of this exercise, when doing different tasks with SQL (querying, changing, creating) is each respective task supposed to end with a ';' or can there just be one at the end?
Collections are a way for you to organize kata so that you can create your own training routines.
Every collection you create is public and automatically sharable with other warriors.
After you have added a few kata to a collection you and others can train on the kata contained within the collection.