message: Summary stats procedure supports UTF8 cell values
diff: @@ -392,7 +392,7 @@ struct CategoricalRowHandler {
  return true;
  }
  mostFrequents.addItem(make_pair(std::get<1>(cols[0]).toInt(),
  - std::get<1>(cols[1]).toString()));
  + std::get<1>(cols[1]).toUtf8String()));
  return true;
  };
  BoundGroupByQuery(select,
  