private function appendByPosition($values)
	{
		$this->setPart(CmdInsert::PART_AS, false);
		
		if (!$this->placeholder)
			$this->placeholder = Assembly::placeholder(count($values), true);
		
		return $this->appendPart(
			CmdInsert::PART_VALUES,
			$this->placeholder,
			$values
		);
	}