Execution example::

  select Shops --filter true --output_columns '_key, from_office' --scorer 'from_office = math_abs(250 - from_station)' --sort_keys from_office
  # [
  #   [
  #     0, 
  #     1337566253.89858, 
  #     0.000355720520019531
  #   ], 
  #   [
  #     [
  #       [
  #         3
  #       ], 
  #       [
  #         [
  #           "_key", 
  #           "ShortText"
  #         ], 
  #         [
  #           "from_office", 
  #           "Int32"
  #         ]
  #       ], 
  #       [
  #         "Cake & Coffee Shop", 
  #         50
  #       ], 
  #       [
  #         "Donut & Coffee Shop", 
  #         150
  #       ], 
  #       [
  #         "Coffee Shop", 
  #         200
  #       ]
  #     ]
  #   ]
  # ]
