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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.
kata basically gave us the code minus the formula.
An anti-pattern can create an error later on or cause technical debt. Which is why one should only select the columns that they need in a query. Where I disagree with this statment of using SELECT * as an anti-pattern in this instence is that Kata asked to "select all" which is literally what SELECT * means.