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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 agree with this
All the details for sql are in the comment in the initial solution.
I feel like if the instructions explained how to insert the month an year totals, that would bring it down to a true 6.
Ranks can't be changed easily anymore.