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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.
No, you can use bare selects anywhere, it just usually doesn't make sense to do so.
wait what??? you can use a bare select ??? Does this work only for the exists statement?