Execution example::

  > suggest --table item_query --column kana --types suggest --frequency_threshold 1 --query search
  [
    [
      0, 
      1335519590.01861, 
      0.000383615493774414
    ], 
    {
      "suggest": [
        [
          2
        ], 
        [
          [
            "_key", 
            "ShortText"
          ], 
          [
            "_score", 
            "Int32"
          ]
        ], 
        [
          "search engine", 
          1
        ], 
        [
          "web search realtime", 
          1
        ]
      ]
    }
  ]