Execution example::

  > select --table User --query friends:@tomo --output_columns _key,username
  [
    [
      0, 
      1335519633.46704, 
      0.000623941421508789
    ], 
    [
      [
        [
          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, 
      1335519633.67028, 
      0.000344514846801758
    ], 
    [
      [
        [
          3
        ], 
        [
          [
            "_key", 
            "ShortText"
          ], 
          [
            "username", 
            "ShortText"
          ]
        ], 
        [
          "ken", 
          "健作"
        ], 
        [
          "taro", 
          "ぐるんが太郎"
        ], 
        [
          "hana", 
          "花子"
        ]
      ]
    ]
  ]