SELECT
    t.id,
    t.shipped,
    c.code companyCode,
    t.packages,
    tto.description,
    ot.code 
FROM ticket t
    JOIN company c ON c.id = t.companyFk
    LEFT JOIN ticketObservation tto ON tto.ticketFk = t.id
    LEFT JOIN observationType ot ON tto.observationTypeFk = ot.id 
WHERE t.id = 1;