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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.
As Chrono79 wrote, don't add anything or alter the given table. In SELECT statement, you can define a new column in you output and wrote a constant or formula to populate that column. Use this.
Not a kata suggestion
You shouldn't add anything to the table, you only need to execute a select statement.