Pimcore\Model\Object\Listing\Concrete\Dao::getSelectPart PHP Метод

    protected function getSelectPart($defaultString = "", $column = "oo_id")
    {
        $selectPart = $defaultString;
        $fieldCollections = $this->model->getFieldCollections();
        if (!empty($fieldCollections)) {
            $selectPart = "DISTINCT " . $column;
        }
        return $selectPart;
    }