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-- 1. Бколько суммарно ΠΊΠ°ΠΆΠ΄Ρ‹ΠΉ Ρ‚ΠΈΠΏ самолёта ΠΏΡ€ΠΎΠ²Ρ‘Π» Π² Π²ΠΎΠ·Π΄ΡƒΡ…Π΅, Ссли Π±Ρ€Π°Ρ‚ΡŒ Π·Π°Π²Π΅Ρ€ΡˆΡ‘Π½Π½Ρ‹Π΅ ΠΏΠ΅Ρ€Π΅Π»Π΅Ρ‚Ρ‹. SELECT -- ВрСмня ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Π½ΠΎΠ΅ Π² Π²ΠΎΠ·Π΄ΡƒΡ…Π΅ a.model "МодСль_самолСта", SUM(f.actual_arrival - f.actual_departure) "Π’_Π²ΠΎΠ·Π΄ΡƒΡ…Π΅_часов" FROM bookings.aircrafts a JOIN bookings.flights f ON f.aircraft_code = a.aircraft_code WHERE f.status = 'Arrived' GROUP BY a.model ORDER BY Π’_Π²ΠΎΠ·Π΄ΡƒΡ…Π΅_часов DESC; -- 2. Бколько Π±Ρ‹Π»ΠΎ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½ΠΎ посадочных Ρ‚Π°Π»ΠΎΠ½ΠΎΠ² ΠΏΠΎ ΠΊΠ°ΠΆΠ΄ΠΎΠΉ Π±Ρ€ΠΎΠ½ΠΈ SELECT COUNT(bp.boarding_no) as boarded_count FROM bookings.boarding_passes bp JOIN bookings.tickets t ON t.ticket_no = bp.ticket_no JOIN bookings.bookings b ON b.book_ref = t.book_ref WHERE b.book_ref = t.book_ref GROUP BY bp.boarding_no; -- АналогичноС Ρ€Π΅ΡˆΠ΅Π½ΠΈΠ΅ Π·Π°Π΄Π°Ρ‡ΠΈ SELECT COUNT(bp.boarding_no) as boarded_count FROM bookings.boarding_passes bp JOIN bookings.flights f ON f.flight_id = bp.flight_id WHERE f.actual_departure IS NOT NULL GROUP BY bp.boarding_no; -- 3. ВывСсти ΠΎΠ±Ρ‰ΡƒΡŽ сумму ΠΏΡ€ΠΎΠ΄Π°ΠΆ ΠΏΠΎ ΠΊΠ°ΠΆΠ΄ΠΎΠΌΡƒ классу Π±ΠΈΠ»Π΅Ρ‚ΠΎΠ² SELECT tf.fare_conditions AS "Класс", SUM(amount) AS "Π‘ΡƒΠΌΠΌΠ°" FROM bookings.ticket_flights AS tf GROUP BY tf.fare_conditions ORDER BY Π‘ΡƒΠΌΠΌΠ° DESC; -- 4. Найти ΠΌΠ°Ρ€ΡˆΡ€ΡƒΡ‚ с наибольшим финансовым ΠΎΠ±ΠΎΡ€ΠΎΡ‚ΠΎΠΌ -- 5. Найти Π½Π°ΠΈΠ»ΡƒΡ‡ΡˆΠΈΠΉ ΠΈ Π½Π°ΠΈΡ…ΡƒΠ΄ΡˆΠΈΠΉ мСсяцы ΠΏΠΎ Π±Ρ€ΠΎΠ½ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡŽ Π±ΠΈΠ»Π΅Ρ‚ΠΎΠ² (количСство ΠΈ сумма) -- 6. ΠœΠ΅ΠΆΠ΄Ρƒ ΠΊΠ°ΠΊΠΈΠΌΠΈ Π³ΠΎΡ€ΠΎΠ΄Π°ΠΌΠΈ пассаТиры Π΄Π΅Π»Π°Π»ΠΈ пСрСсадки? -- ΠŸΠ΅Ρ€Π΅ΡΠ°Π΄ΠΊΠΎΠΉ считаСтся Π½Π°Ρ…ΠΎΠΆΠ΄Π΅Π½ΠΈΠ΅ пассаТира Π² ΠΏΡ€ΠΎΠΌΠ΅ΠΆΡƒΡ‚ΠΎΡ‡Π½ΠΎΠΌ аэропорту ΠΌΠ΅Π½Π΅Π΅ 24 часов select * from bookings.tickets; select * from bookings.aircrafts; select * from bookings.flights; select * from bookings.boarding_passes; select * from bookings.bookings; select * from bookings.ticket_flights;

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