Задание: 49 (Serge I: 2003-02-17)
SELECT Ships.name
FROM Classes JOIN
Ships ON Classes.class = ships.class
WHERE bore = 16
UNION
SELECT Outcomes.ship
FROM Outcomes JOIN
Classes ON Classes.class = Outcomes.ship
WHERE bore = 16
Все задачи и решения: https://exercises-on-sql.blogspot.com/2017/02/select-sql.html

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