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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, I think that's Ruby highlighting some reserved words.
The names for the columns were longer than my entire query... I really recommend using shorter names for an exercise such as this to avoid all the unnecessary typing
small issue: writing "hour" as a column name is recognized as a column but writing "hours" is not, but "hour" is not an existing column and "hours" is in fact the correct one regardless of wether or not the interpreter highlights it as a column name
nice solution!