Георгий Баручян

->registerRuntimeField('PRICE', [
                'data_type' => \Bitrix\Catalog\PriceTable::class,
                'reference' => [
                    '=this.ID' => 'ref.PRODUCT_ID',
                    '=ref.CATALOG_GROUP_ID' => new \Bitrix\Main\DB\SqlExpression('?', 1)
                ]
            ])

$query  = \Entities\Marketing\PostingTmpTable::query()
             ->registerRuntimeField('CONTACT', [
                 'data_type' => '\Bitrix\Sender\ContactTable',
                 'reference' => [
                     '=this.CONTACT_ID' => 'ref.ID',
                 ],
             ])
             ->registerRuntimeField('PROPERTY', [
                'data_type' => $hlBlockEntity,
                'reference' => [
                    '=this.CONTACT.CODE' => 'ref.UF_EMAIL'
                ],
            ])
        ;