Result::fetchRaw() в 1С-Битрикс: когда и зачем использовать

<?php
require_once($_SERVER['DOCUMENT_ROOT'].'/bitrix/modules/main/include/prolog_before.php');

use Bitrix\Main\Application;

$connection = Application::getConnection();
$sql = "SELECT LOGIN, EMAIL, DATE_REGISTER FROM b_user WHERE ID > 100 LIMIT 3";
$result = $connection->query($sql);

while ($rawUser = $result->fetchRaw()) {
    echo "Логин: {$rawUser['LOGIN']} | Email: {$rawUser['EMAIL']} | Дата регистрации (сырая): {$rawUser['DATE_REGISTER']}<br>";
}