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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.
Where I can find the explanation reference about the percent growth formula? Why it is divided and reduced by 100?
There is no need for the last line with ORDER BY here - window function orders the data.
The Description could be reworked to that it is clear which column to return and how they are spelled :)