[mORMot] MongoDB의 Aggregate 사용하기

var
  Coll: TMongoCollection;
  sTemp: string;
begin
  Coll := DB.CollectionOrCreate['Collection'];
  sTemp := '{$match:{..}, $group:{..}, $..}';

  Showmessage(Coll.AggregateJSONFromJson(sTemp));
end;