Black Thursday is a system that is able to load, parse, search, and execute business intelligence queries against the data from a typical e-commerece business in Ruby.
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Business Intelligence - Return all items that were purchased most if there are several with the same quantity #70
Return all items that were purchased most if there are several with the same quantity:
sa = SalesAnalyst.new
sa.most_recently_bought_items(customer_id) #=> [item, item, item]
https://github.com/turingschool/curriculum/blob/master/source/projects/black_thursday/iteration_5.markdown