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j-sm-n / black_thursday

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 - Which merchants offer only one item #58

Closed jesse-spevack closed 8 years ago

jesse-spevack commented 8 years ago

Which merchants offer only one item:

sa = SalesAnalyst.new

sa.merchants_with_only_one_item #=> [merchant, merchant, merchant]

https://github.com/turingschool/curriculum/blob/master/source/projects/black_thursday/iteration_4.markdown