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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.
Get started now by creating a new collection.
I hate this code. Please don't look at it. It works but it's terrible and should be forgotten about as fast as possible!
I have never hated anything I've written more than I hate this. I'm so sorry!
The table should be called 'elf'.
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I'm sorry. Didn't know that you could make things a spoiler when responding to a solution, you learn something new every day!
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Great Kata!
Maybe in order to learn beginners better practices, you should either include NULL values into the country column of travelers or add a DESCRIBE of the table to the description where we can see the column having a NOT NULL contraint.
I think this would teach good practices to beginners. Feel free to discuss what you think!
NOT can indeed be placed in both places.
No. There are test cases where uppercase characters occur. The description of the kata also mentions this.