実行例 ::

  > select --table Comments --query comment:@羽田 --filter 'geo_in_circle(location,"127975798x502919856",20000)' --output_columns posted_by.name,comment --drilldown hash_tags,posted_by
  [[0,1294292471.42922,0.00063973],[[[1],[["posted_by.name","ShortText"],["comment","ShortText"]],["グニャラくん","groonga開発合宿のため羽田空港に来ました！ #groonga #travel"]],[[2],[["_key","ShortText"],["_nsubrecs","Int32"]],["groonga",1],["travel",1]],[[1],[["_key","ShortText"],["_nsubrecs","Int32"]],["tasukuchan",1]]]]
  