FinishCarlosLab05

Lab05.sql

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+CREATE TABLE authors (
+                         author_id INT NOT NULL AUTO_INCREMENT,
+                         name VARCHAR(255) NOT NULL,
+                         PRIMARY KEY (author_id)
+);
+
+CREATE TABLE posts (
+                       post_id INT NOT NULL AUTO_INCREMENT,
+                       title VARCHAR(255) NOT NULL,
+                       word_count INT NOT NULL,
+                       views INT NOT NULL,
+                       author_id INT,
+                       PRIMARY KEY (post_id),
+                       FOREIGN KEY (author_id) REFERENCES authors(author_id)
+);
+
+INSERT INTO authors (name) VALUES
+                               ('Maria Charlotte'),
+                               ('Juan Perez'),
+                               ('Gemma Alcocer');
+
+INSERT INTO posts (title, word_count, views, author_id) VALUES
+('Best Paint Colors', 814, 14, 1),
+('Small Space Decorating Tips', 1146, 221, 2),
+('Hot Accessories', 986, 105, 1),
+('Mixing Textures', 765, 22, 1),
+('Kitchen Refresh', 1242, 307, 2),
+('Homemade Art Hacks', 1002, 193, 1),
+('Refinishing Wood Floors', 1571, 7542, 3);
+
+CREATE TABLE customers (
+                           customer_id INT NOT NULL AUTO_INCREMENT,
+                           name VARCHAR(255) NOT NULL,
+                           status VARCHAR(50),
+                           PRIMARY KEY (customer_id)
+);
+
+CREATE TABLE aircrafts (
+                           aircraft_id INT NOT NULL AUTO_INCREMENT,
+                           type VARCHAR(255) NOT NULL,
+                           total_seats INT NOT NULL,
+                           PRIMARY KEY (aircraft_id)
+);
+
+CREATE TABLE flights (
+                         flight_id INT NOT NULL AUTO_INCREMENT,
+                         flight_number VARCHAR(50) NOT NULL,
+                         mileage INT NOT NULL,
+                         aircraft_id INT,
+                         PRIMARY KEY (flight_id),
+                         FOREIGN KEY (aircraft_id) REFERENCES aircrafts(aircraft_id)
+);
+
+CREATE TABLE customer_flights (
+                                  customer_id INT,
+                                  flight_id INT,
+                                  total_customer_mileage INT,
+                                  FOREIGN KEY (customer_id) REFERENCES customers(customer_id),
+                                  FOREIGN KEY (flight_id) REFERENCES flights(flight_id)
+);
+
+INSERT INTO customers (name, status) VALUES
+('Agustine Riviera', 'Silver'),
+('Alaina Sepulvida', 'None'),
+('Tom Jones', 'Gold'),
+('Sam Rio', 'None'),
+('Jessica James', 'Silver'),
+('Ana Janco', 'Silver'),
+('Jennifer Cortez', 'Gold'),
+('Christian Janco', 'Silver');
+
+INSERT INTO aircrafts (type, total_seats) VALUES
+('Boeing 747', 400),
+('Airbus A330', 236),
+('Boeing 777', 264);
+
+INSERT INTO flights (flight_number, mileage, aircraft_id) VALUES
+('DL143', 135, 1),
+('DL122', 4370, 2),
+('DL53', 2078, 3),
+('DL222', 1765, 3),
+('DL37', 531, 1);
+
+INSERT INTO customer_flights (customer_id, flight_id, total_customer_mileage) VALUES
+((SELECT customer_id FROM customers WHERE name = 'Agustine Riviera'), (SELECT flight_id FROM flights WHERE flight_number = 'DL143'), 115235),
+((SELECT customer_id FROM customers WHERE name = 'Agustine Riviera'), (SELECT flight_id FROM flights WHERE flight_number = 'DL122'), 115235),
+((SELECT customer_id FROM customers WHERE name = 'Alaina Sepulvida'), (SELECT flight_id FROM flights WHERE flight_number = 'DL122'), 6008),
+((SELECT customer_id FROM customers WHERE name = 'Tom Jones'), (SELECT flight_id FROM flights WHERE flight_number = 'DL122'), 205767),
+((SELECT customer_id FROM customers WHERE name = 'Tom Jones'), (SELECT flight_id FROM flights WHERE flight_number = 'DL53'), 205767),
+((SELECT customer_id FROM customers WHERE name = 'Tom Jones'), (SELECT flight_id FROM flights WHERE flight_number = 'DL222'), 205767),
+((SELECT customer_id FROM customers WHERE name = 'Sam Rio'), (SELECT flight_id FROM flights WHERE flight_number = 'DL143'), 2653),
+((SELECT customer_id FROM customers WHERE name = 'Jessica James'), (SELECT flight_id FROM flights WHERE flight_number = 'DL143'), 127656),
+((SELECT customer_id FROM customers WHERE name = 'Sam Rio'), (SELECT flight_id FROM flights WHERE flight_number = 'DL143'), 2653),
+((SELECT customer_id FROM customers WHERE name = 'Ana Janco'), (SELECT flight_id FROM flights WHERE flight_number = 'DL222'), 136773),
+((SELECT customer_id FROM customers WHERE name = 'Jennifer Cortez'), (SELECT flight_id FROM flights WHERE flight_number = 'DL222'), 300582),
+((SELECT customer_id FROM customers WHERE name = 'Jessica James'), (SELECT flight_id FROM flights WHERE flight_number = 'DL122'), 127656),
+((SELECT customer_id FROM customers WHERE name = 'Sam Rio'), (SELECT flight_id FROM flights WHERE flight_number = 'DL37'), 2653),
+((SELECT customer_id FROM customers WHERE name = 'Christian Janco'), (SELECT flight_id FROM flights WHERE flight_number = 'DL222'), 14642);
+
+-- Nº total de vuelos:
+SELECT COUNT(DISTINCT flight_number) AS total_flights FROM flights;
+
+-- Distancia promedio de vuelo:
+SELECT AVG(mileage) AS average_flight_distance FROM flights;
+
+-- Nº promedio de asientos:
+SELECT AVG(total_seats) AS average_seats FROM aircrafts;
+
+-- Nº promedio de millas voladas/clientes- por estatus:
+SELECT
+    c.status AS customer_status,
+    MAX(cf.total_customer_mileage) AS max_miles
+FROM
+    customers c
+        JOIN
+    customer_flights cf ON c.customer_id = cf.customer_id
+GROUP BY
+    c.status;
+
+-- Nº total de aeronaves Boeing:
+SELECT COUNT(*) AS total_boeing_aircrafts FROM aircrafts WHERE type LIKE '%Boeing%';
+
+-- Vuelos entre 300 y 2000 millas:
+SELECT * FROM flights WHERE mileage BETWEEN 300 AND 2000;
+
+-- Distancia promedio de vuelo reservada por estatus/cliente:
+SELECT
+    c.status AS customer_status,
+    AVG(f.mileage) AS average_flight_distance
+FROM
+    customers c
+        JOIN
+    customer_flights cf ON c.customer_id = cf.customer_id
+        JOIN
+    flights f ON cf.flight_id = f.flight_id
+GROUP BY
+    c.status;
+
+-- Aeronave + reservada por miembros oro:
+SELECT
+    a.type AS aircraft_type,
+    COUNT(*) AS reservation_count
+FROM
+    customers c
+        JOIN
+    customer_flights cf ON c.customer_id = cf.customer_id
+        JOIN
+    flights f ON cf.flight_id = f.flight_id
+        JOIN
+    aircrafts a ON f.aircraft_id = a.aircraft_id
+WHERE
+    c.status = 'Gold'
+GROUP BY
+    a.type
+ORDER BY
+    reservation_count DESC
+LIMIT 1;
+

Main.java

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+public class Main {
+    public static void main(String[] args) {
+        System.out.println("Hello world!");
+    }
+}