Execution example::

  select --table User --query friends:@tomo --output_columns _key,username
  # [
  #   [
  #     0, 
  #     1337566253.89858, 
  #     0.000355720520019531
  #   ], 
  #   [
  #     [
  #       [
  #         5
  #       ], 
  #       [
  #         [
  #           "_key", 
  #           "ShortText"
  #         ], 
  #         [
  #           "username", 
  #           "ShortText"
  #         ]
  #       ], 
  #       [
  #         "ken", 
  #         "健作"
  #       ], 
  #       [
  #         "taro", 
  #         "ぐるんが太郎"
  #       ], 
  #       [
  #         "jiro", 
  #         "ぐるんが次郎"
  #       ], 
  #       [
  #         "moritapo", 
  #         "森田"
  #       ], 
  #       [
  #         "hana", 
  #         "花子"
  #       ]
  #     ]
  #   ]
  # ]
  select --table User --query friends:@jiro --output_columns _key,username
  # [
  #   [
  #     0, 
  #     1337566253.89858, 
  #     0.000355720520019531
  #   ], 
  #   [
  #     [
  #       [
  #         3
  #       ], 
  #       [
  #         [
  #           "_key", 
  #           "ShortText"
  #         ], 
  #         [
  #           "username", 
  #           "ShortText"
  #         ]
  #       ], 
  #       [
  #         "ken", 
  #         "健作"
  #       ], 
  #       [
  #         "taro", 
  #         "ぐるんが太郎"
  #       ], 
  #       [
  #         "hana", 
  #         "花子"
  #       ]
  #     ]
  #   ]
  # ]