code: def _partition_operation_sql(self, operation, settings=None, from_part=None):
          
          operation = operation.upper()
          assert operation in self.OPERATIONS, "operation must be in [%s]" % comma_join(self.OPERATIONS)
  
          sql = "ALTER TABLE `%s`.`%s` %s PARTITION %s" % (self._database.db_name, self.table, operation, self.partition)
          if from_part is not None:
              sql += " FROM %s" % from_part
          self._database.raw(sql, settings=settings, stream=False)
docs: Performs some operation over partition
          :param db: Database object to execute operation on
          :param operation: Operation to execute from SystemPart.OPERATIONS set
          :param settings: Settings for executing request to ClickHouse over db.raw() method
          :return: Operation execution result