10.10.2016 Bitrix, php, php скрипты #D7, ExpressionField
$resOrder = Bitrix\Sale\OrderTable::getList( array( 'filter' => array('=USER_ID' => 1), 'group' => array('PAYED'), 'runtime' => array( new Bitrix\Main\Entity\ExpressionField('IDS', 'GROUP_CONCAT(%s)', array('ID')), ), ) );