Execution example::

  > suggest --table item_query --column kana --types complete --frequency_threshold 1 --query en
  [
    [
      0, 
      1335519580.61411, 
      0.00101041793823242
    ], 
    {
      "complete": [
        [
          1
        ], 
        [
          [
            "_key", 
            "ShortText"
          ], 
          [
            "_score", 
            "Int32"
          ]
        ], 
        [
          "engine", 
          1
        ]
      ]
    }
  ]