Lab6

LabSolution

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+# Exercise 2
+
+CREATE DATABASE airline_db;
+
+USE airline_db;
+
+CREATE TABLE Customers (
+ Customer_id INT PRIMARY KEY,
+ Name VARCHAR(100),
+ Status VARCHAR(20),
+ Mileage INT
+);
+
+CREATE TABLE Flights (
+ Flight_id INT PRIMARY KEY,
+ Flight_Number VARCHAR(50),
+ Aircraft VARCHAR(50),
+ Aircraft_seats INT,
+ Flight_Mileage INT
+);
+
+
+CREATE TABLE Aircraft (
+ AircraftID INT AUTO_INCREMENT PRIMARY KEY,
+ AircraftName VARCHAR(100),
+ TotalSeats INT
+);
+
+
+
+CREATE TABLE CustomerFlights (
+ CustomerFlightID INT AUTO_INCREMENT PRIMARY KEY,
+ FlightID INT,
+ AircraftID INT,
+ FOREIGN KEY (FlightID) REFERENCES Flights(Flight_id),
+ FOREIGN KEY (AircraftID) REFERENCES Aircraft(AircraftID)
+);
+
+
+
+CREATE TABLE Bookings (
+ Booking_id int PRIMARY KEY,
+ Customer_id INT,
+ Flight_id INT,
+ FOREIGN KEY (Customer_id) REFERENCES Customers(Customer_id),
+ FOREIGN KEY (Flight_id) REFERENCES Flights(Flight_id)
+);
+
+INSERT INTO Customers (Customer_id, Name, Status, Mileage)
+VALUES
+ ('1', 'Agustine Riviera', 'Silver', 115235),
+ ('2', 'Alaina Sepulvida', 'None', 6008),
+ ('3', 'Tom Jones', 'Gold', 205767),
+ ('4', 'Sam Rio', 'None', 2653),
+ ('5', 'Jessica James', 'Silver', 127656),
+ ('6', 'Ana Janco', 'Silver', 136773),
+ ('7', 'Jennifer Cortez', 'Gold', 300582),
+ ('8', 'Christian Janco', 'Silver', 14642);
+
+INSERT INTO Flights (Flight_id, Flight_Number, Aircraft, Aircraft_seats, Flight_Mileage)
+VALUES
+ ('1', 'DL143', 'Boeing 747', 400, 135),
+ ('2', 'DL122', 'Airbus A330', 236, 4370),
+ ('3','DL53', 'Boeing 777', 264, 2078),
+ ('4', 'DL222', 'Boeing 777', 264, 1765),
+ ('5', 'DL37', 'Boeing 747', 400, 531);
+
+
+
+INSERT INTO Aircraft (AircraftName, TotalSeats)
+VALUES
+ ('Boeing 747', 400),
+ ('Airbus A330', 236),
+ ('Boeing 777', 264);
+
+
+
+INSERT INTO Bookings (Booking_id, Customer_id, Flight_id)
+VALUES
+ ('1', '1', '1'),
+ ('2', '1', '2'),
+ ('3','2', '2'),
+ ('4', '3', '2'),
+ ('5', '3', '3'),
+ ('6', '3', '4'),
+ ('7', '4', '1'),
+ ('8', '5', '1'),
+ ('9', '5', '2'),
+ ('10', '6', '4'),
+ ('11', '7', '4'),
+ ('12', '8', '4');
+
+# exercise 3
+SELECT COUNT(*) AS TotalFlights FROM Flights;
+# exercise 4
+SELECT AVG(Flight_Mileage) AS AverageFlightDistance FROM Flights;
+
+SELECT AVG(Aircraft_seats) AS AverageSeats FROM Flights;
+
+SELECT Status, AVG(Mileage) AS AverageMileage
+FROM Customers
+GROUP BY Status;
+
+SELECT Status, MAX(Mileage) AS MaxMileage
+FROM Customers
+GROUP BY Status;
+
+SELECT COUNT(*) AS TotalBoeingAircraft
+FROM Flights
+WHERE Aircraft LIKE '%Boeing%';
+
+SELECT *
+FROM Flights
+WHERE Flights.Flight_Mileage BETWEEN 300 AND 2000;
+
+SELECT c.Status, AVG(f.Flight_Mileage) AS AverageFlightDistance
+FROM Customers c
+ JOIN Bookings b ON c.Customer_id = b.Customer_id
+ JOIN Flights f ON b.Flight_id = f.Flight_id
+GROUP BY c.Status;
+
+
+SELECT f.Aircraft, COUNT(*) AS BookingCount
+FROM Customers c
+ JOIN Bookings b ON c.Customer_id = b.Customer_id
+ JOIN Flights f ON b.Flight_id = f.Flight_id
+WHERE c.Status = 'Gold'
+GROUP BY f.Aircraft
+ORDER BY BookingCount DESC
+LIMIT 1;