salix/db/changes/233001/00-ticketWeight.sql

UPDATE `vn`.`ticket` t
        JOIN `vn`.`ticketObservation` o ON o.ticketFk = t.id
    SET t.weight = cast(REPLACE(o.description, ',', '.') as decimal(10,2))
        WHERE o.observationTypeFk = 6;

DELETE FROM `vn`.`ticketObservation` WHERE observationTypeFk = 6;
DELETE FROM `vn`.`observationType` WHERE id = 6;