code: 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
  		);
  	}
docs: Append numeric array of values.
  @param array $values Numeric array of values where position of each value matches the
  position of it's filed in $fields private data member.
  @return static