OrderQuery::addAggregatedSelect

private function addAggregatedSelect($alias, $aggregate, $name = null)
{
	$aggregateAlias = '__'.$aggregate.'_'.$alias.'_ALIAS__';
	$this->aggregated[$aggregateAlias] = $alias;

	return $this->addSelect(
		$name
			? new ExpressionField($aggregateAlias, $aggregate.'(%s)', $name)
			: new ExpressionField($aggregateAlias, $aggregate)
	);
}