code: def execute(self, fetchall=False, fetchone=False, use_labels=True):
          
          query = self.get_query(use_labels=use_labels)
          if fetchall:
              return flask.g.db_conn.execute(query).fetchall()
          elif fetchone:
              return flask.g.db_conn.execute(query).fetchone()
docs: :param fetchall: get all rows
          :param fetchone:  get only one row
          :param use_labels: prefix row columns names by the table name
          :return: