Ordering & Group by

Ordering of the collection can be made by using order_by method, while Group by is done via group_by :

User.query.order_by(last_name: "ASC", first_name: "ASC").each do |usr|
    puts "#{usr.first_name} #{usr.last_name}"
end

You can clear the current ordering by using the chainable method clear_order_bys