QueryHelper::prepareSelect

static function prepareSelect(array $selectFields): string
{
	$select = [];
	foreach ($selectFields as $alias => $statement)
	{
		$select[] = "$statement as $alias";
	}
	$selectSql = '';
	if (count($select))
	{
		$selectSql = ', '. implode(', ', $select);
	}

	return $selectSql;
}