Работа с БД в Битрикс

//Получение данных
$connection = Bitrix\Main\Application::getConnection();
$sqlHelper = $connection->getSqlHelper();
$name = "lists_list_elements_14";
$user_id = "1";

$sql = "SELECT * FROM b_user_option WHERE NAME = '".$name."' AND USER_ID = '".$user_id."' AND CATEGORY = 'main.ui.filter'";

$recordset = $connection->query($sql);
while ($record = $recordset->fetch())
{

}


//Изменение данных
$connection = Bitrix\Main\Application::getConnection();
$sqlHelper = $connection->getSqlHelper();
$sql = "UPDATE b_user_option SET VALUE='".$nowParam."' WHERE `ID`='".$record["ID"]."'";
$connection->query($sql);


//Добавление данных
$connection = Bitrix\Main\Application::getConnection();
$sqlHelper = $connection->getSqlHelper();
$sql = "INSERT INTO `b_user_option` (`USER_ID`, `CATEGORY`, `NAME`, `VALUE`, `COMMON`) VALUES ('" . $user_id . "', 'main.ui.filter', '" . $name . "', '" . $nowParam . "', 'N');";
$connection->query($sql);