4 курс 1 семестр / Курсовая / SQL / PR3

DELIMITER $$
CREATE PROCEDURE `pr3`(IN flight_id INT)
BEGIN

-- Query: Output the crew list for a given flight
SELECT emp_id, name, pos, skill
FROM employees
JOIN crews ON employees.crew_id = crews.crew_id
JOIN flights ON crews.crew_id = flights.crew_id
WHERE flights.flight_id = flight_id;

IF NOT EXISTS (SELECT * FROM flights WHERE flights.flight_id = flight_id) THEN
SELECT 'Данные по этому рейсу не найдены' as 'Error';
END IF;
END $$
DELIMITER ;

CALL pr3(99);