message: Issue Make GetChunk const
  Fix R DataFrame scan.
diff: @@ -956,7 +956,7 @@ struct DataFrameScanFunction : public TableFunction {
  }
  static unique_ptr<FunctionOperatorData> dataframe_scan_init(ClientContext &context, const FunctionData *bind_data,
  - vector<column_t> &column_ids,
  + const vector<column_t> &column_ids,
  TableFilterCollection *filters) {
  return make_unique<DataFrameScanState>();
  }
  