Completed SQL normalization and aggregation lab

airline.sql

@@ -0,0 +1,185 @@
+CREATE DATABASE airline_database;
+USE airline_database;
+
+CREATE TABLE customers(
+                          id INT PRIMARY KEY AUTO_INCREMENT,
+                          name VARCHAR(100) NOT NULL,
+                          status VARCHAR(20) NOT NULL,
+                          total_mileage INT NOT NULL
+);
+
+SELECT * FROM customers;
+
+CREATE TABLE aircrafts(
+                          id INT PRIMARY KEY AUTO_INCREMENT,
+                          name VARCHAR(100) NOT NULL,
+                          total_seats INT NOT NULL
+);
+
+CREATE TABLE flights(
+                        id INT PRIMARY KEY AUTO_INCREMENT,
+                        flight_number VARCHAR(20) NOT NULL,
+                        mileage INT NOT NULL,
+                        aircraft_id INT NOT NULL,
+                        FOREIGN KEY (aircraft_id) REFERENCES aircrafts(id)
+
+);
+
+CREATE TABLE bookings(
+                         id INT PRIMARY KEY AUTO_INCREMENT,
+                         customer_id INT NOT NULL,
+                         flight_id INT NOT NULL,
+                         FOREIGN KEY (customer_id) REFERENCES customers(id),
+                         FOREIGN KEY (flight_id) REFERENCES flights(id)
+
+);
+
+INSERT INTO customers(name, status, total_mileage)
+VALUES
+    ('Agustine Riviera','Silver', 115235),
+    ('Alaina Sepulvida','None',6008),
+    ('Tom Jones','Gold',205767),
+    ('Sam Rio','None',2653),
+    ('Jessica James','Silver',127656),
+    ('Ana Janco', 'Silver',136773),
+    ('Jennifer Cortez','Gold',300582),
+    ('Christian Janco','Silver',14642);
+
+INSERT INTO aircrafts(name, total_seats)
+VALUES
+    ('Boeing 747',400),
+    ('Airbus A330',236),
+    ('Boeing 777',264);
+
+SELECT * FROM aircrafts;
+
+
+INSERT INTO flights(flight_number, mileage, aircraft_id)
+VALUES
+    ('DL143',135,1),
+    ('DL122',4370,2),
+    ('DL53',2078,3),
+    ('DL222',1765,3),
+    ('DL37',531,1);
+
+
+SELECT * FROM customers;
+
+SELECT * FROM flights;
+
+INSERT INTO bookings(customer_id, flight_id)
+VALUES
+    (1,1), -- Agustine → DL143 QUEEE DIFICIL RELACIONARRR
+    (1,2), -- Agustine → DL122
+    (2,2), -- Alaina → DL122
+    (3,2), -- Tom → DL122
+    (3,3), -- Tom → DL53
+    (4,1), -- Sam → DL143
+    (5,1), -- Jessica → DL143
+    (6,4), -- Ana → DL222
+    (7,4), -- Jennifer → DL222
+    (5,2), -- Jessica → DL122
+    (4,5), -- Sam → DL37
+    (8,4); -- Christian → DL222)
+
+SELECT * FROM bookings;
+
+--  Mostrar nombre el cliente y vuelo
+SELECT customers.name,flights.flight_number
+FROM bookings
+         JOIN customers
+              ON bookings.customer_id = customers.id
+         JOIN flights
+              ON bookings.flight_id = flights.id;
+
+
+-- Mostrar promedio de Millas de vuelos, agrupado por status del cliente
+SELECT customers.status,
+       AVG(flights.mileage)
+FROM bookings
+         JOIN customers
+              ON bookings.customer_id = customers.id
+         JOIN flights
+              ON bookings.flight_id = flights.id
+GROUP BY customers.status;
+
+
+-- Mostrar la cantidad maxima de millas, por cada grupo (Gold,Silver,none)
+SELECT customers.status,
+       MAX(total_mileage)
+FROM customers
+GROUP BY customers.status;
+
+-- Mostrar vuelos entre 300 y 2000 millas
+SELECT flights.flight_number, flights.mileage
+FROM flights
+WHERE mileage BETWEEN 300 AND 2000;
+
+-- Conatr cuantos clientes hay por status
+SELECT customers.status,
+       COUNT(id)
+FROM customers
+GROUP BY customers.status;
+
+-- mostrar clientes con mas de 100000 millas
+SELECT customers.name,customers.total_mileage
+FROM customers
+WHERE total_mileage > 100000;
+
+
+-- mostrar cuantos vuelos reservó cada cliente
+SELECT customers.name,
+       COUNT(customer_id)
+FROM customers
+         JOIN bookings b
+              ON customers.id = b.customer_id
+GROUP BY customers.name;
+
+
+-- Total de numeros de vuelos
+SELECT COUNT(DISTINCT flight_number) AS total_flights
+FROM flights;
+
+
+-- calcular numero de millas
+SELECT AVG(mileage) AS average_flight_distance
+FROM flights;
+
+
+-- calcular promedio de asientos por avion
+SELECT AVG(total_seats) AS average_seats
+FROM aircrafts;
+
+
+-- calcular promedio de millas por status
+SELECT status, AVG(total_mileage) AS average_customer_mileage
+FROM customers
+GROUP BY status;
+
+-- Max cantidad maxima de millas por cada status
+SELECT status, MAX(total_mileage) AS max_customer_mileage
+FROM customers
+GROUP BY status;
+
+
+-- cuantos aviones boing hay
+SELECT COUNT(*) AS boeing_aircrafts
+FROM aircrafts
+WHERE name LIKE '%Boeing%';
+
+
+-- Mostras vuelos entre 300 y 2000 millas
+SELECT flight_number, mileage
+FROM flights
+WHERE mileage BETWEEN 300 AND 2000;
+
+
+-- promedio de millas reservadas, agrupado por status
+SELECT c.status,
+       AVG(f.mileage) AS average_booked_distance
+FROM bookings b
+         JOIN customers c
+              ON b.customer_id = c.id
+         JOIN flights f
+              ON b.flight_id = f.id
+GROUP BY c.status;

blog.sql

@@ -0,0 +1,45 @@
+CREATE  DATABASE blog_database;
+USE blog_database;
+
+CREATE TABLE authors(
+                        id INT PRIMARY KEY AUTO_INCREMENT,
+                        name VARCHAR(100)NOT NULL
+);
+
+CREATE TABLE posts(
+                      id INT PRIMARY KEY AUTO_INCREMENT,
+                      title VARCHAR(255) NOT NULL,
+                      word_count INT NOT NULL,
+                      views INT NOT NULL,
+                      author_id INT,
+                      FOREIGN KEY (author_id) REFERENCES authors(id)
+
+);
+
+INSERT INTO authors(name)
+VALUES
+    ('Maria Charlotte'),
+    ('Juan Perez'),
+    ('Gemma Alcocer');
+
+SELECT *  FROM authors;
+ALTER TABLE authors AUTO_INCREMENT = 1;
+DELETE FROM authors;
+
+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);
+
+SELECT * FROM posts;
+
+SELECT authors.name, posts.title
+FROM posts
+         JOIN authors
+              ON posts.author_id = authors.id;
+