Execution example::

  > select --table Users --match_columns name,location_str,description --query 東京 --output_columns _key,name
  [[0,1317212781.80175,0.000302755],[[[2],[["_key","ShortText"],["name","ShortText"]],["tasukuchan","グニャラくん"],["OffGao","OffGao"]]]]