SELECT   
    ir.id code,
    ir.description description,
    CAST(SUM(IFNULL(i.stems, 1) * s.quantity) AS DECIMAL(10,2)) stems,
    CAST(SUM(CAST(IFNULL(i.stems, 1) * s.quantity * IF(ic.grams, ic.grams, i.density * ic.cm3delivery / 1000) / 1000 AS DECIMAL(10,2)) * 
    IF(sub.weight, sub.weight / vn.invoiceOut_getWeight(?), 1)) AS DECIMAL(10,2)) netKg,
    CAST(SUM((s.quantity * s.price * (100 - s.discount) / 100 )) AS DECIMAL(10,2)) subtotal    
        FROM vn.ticket t
            JOIN vn.sale s ON s.ticketFk = t.id
            JOIN vn.item i ON i.id = s.itemFk
            JOIN vn.itemCost ic ON ic.itemFk = i.id AND ic.warehouseFk = t.warehouseFk
            JOIN vn.intrastat ir ON ir.id = i.intrastatFk 
            LEFT JOIN (
                SELECT t2.weight
                    FROM vn.ticket t2 
                    WHERE refFk = ? AND weight
                    LIMIT 1
            ) sub ON TRUE
        WHERE t.refFk = ?
            AND i.intrastatFk     
        GROUP BY i.intrastatFk
        ORDER BY i.intrastatFk;