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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.
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cool little challenge, cte is my fav
very tidy
great challenge, go CTEs!
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I have
ORDER BY comma - in my code
but the test tells me to ORDER BY comma, i'm confused, my answer matches exactly the expected output