SELECT
    t.id,
    t.shipped,
    c.code companyCode,
    t.packages,
    tto.description
FROM ticket t
    JOIN company c ON c.id = t.companyFk
    LEFT JOIN ticketObservation tto
    	ON tto.ticketFk = t.id
    		AND tto.observationTypeFk = (SELECT id FROM observationType WHERE code = 'deliveryNote')
WHERE t.id = ?