Done

Exercise.sql

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+CREATE DATABASE blog_db;
+
+USE blog_db;
+
+CREATE TABLE blog (
+                      id INT AUTO_INCREMENT PRIMARY KEY,
+                      author VARCHAR (50),
+                      title VARCHAR (100),
+                      word_count INT(50),
+                      views INT (100)
+);
+
+INSERT INTO blog (id, author, title, word_count, views)
+VALUES
+    ('1', 'Maria Charlotte', 'Best Paint Colors', '814', '14'),
+    ('2', 'Juan Perez','Small Space Decoration Tips', '1146', '221'),
+    ('3','Maria Charlotte', 'Hot Accessories', '986', '105'),
+    ('4', 'Maria Charlotte', 'Mixing Textures', '765', '22'),
+    ('5', 'Juan Perez', 'Kitchen Refresh', '1242', '307'),
+    ('6','Maria Charlotte','Homemade Art Hacks', '1002', '193'),
+    ('7', 'Gemma Alcocer', 'Refinishing Wood Floor', '1571','7542');
+
+
+CREATE database customers_db;
+
+USE customers_db;
+
+CREATE TABLE customers (
+                           id INT AUTO_INCREMENT PRIMARY KEY,
+                           Name VARCHAR (50),
+                           Status VARCHAR (20),
+                           Mileage INT (100)
+);
+
+SELECT * From customers;
+
+INSERT INTO customers (id, Name, Status, Mileage)
+VALUES ('1', 'Augustine Riviera', ' Silver', '115235'),
+       ('2', 'Alaina Sepulvida', 'null', '6008'),
+       ('3', 'Tom Jones', 'Gold', '205767'),
+       ('4', 'Jessica James', 'Silver', '127656'),
+       ('5', 'Sam Rio', 'null', '2653'),
+       ('6', 'Ana Janco', 'Silver', '136773'),
+       ('7', 'Jennifer Cortez', 'Gold', '300582'),
+       ('8', 'Christian Janco', 'Silver', '14642');
+
+CREATE database flights_db;
+
+USE flights_db;
+
+CREATE TABLE flights (
+                         flight_number VARCHAR(10),
+                         aircraft VARCHAR (50),
+                         seats INT (100),
+                         mileage INT (100),
+                         flight_id INT AUTO_INCREMENT,
+                         FOREIGN KEY (flight_id) REFERENCES customers (id)
+
+);
+
+-- In the Airline database write the SQL script to get the total number of flights in the database
+SELECT flight_number, COUNT(*) FROM flights;
+
+-- In the Airline database write the SQL script to get the average flight distance.
+SELECT mileage, AVG(mileage) FROM flights;
+
+-- In the Airline database write the SQL script to get the average number of seats.
+SELECT seats, AVG(seats) FROM flights;
+
+-- In the Airline database write the SQL script to get the average number of miles flown by customers grouped by status.
+SELECT Name, mileage, AVG(Mileage)
+FROM customers
+GROUP BY Status;
+
+-- In the Airline database write the SQL script to get the maximum number of miles flown by customers grouped by status.
+SELECT Name, mileage, MAX(mileage)
+FROM customers
+GROUP BY Status;
+
+-- In the Airline database write the SQL script to get the total number of aircraft with a name containing Boeing.
+SELECT aircraft
+FROM flights
+WHERE aircraft='Boeing';
+
+-- In the Airline database write the SQL script to find all flights with a distance between 300 and 2000 miles.
+SELECT *
+FROM flights
+WHERE mileage
+          BETWEEN 300 AND 2000;
+
+-- In the Airline database write the SQL script to find the average flight distance booked grouped by customer status (this should require a join).
+SELECT flights.mileage, AVG(score)
+FROM flights
+         JOIN customers
+              ON flights.flight_id = customers.id
+GROUP BY Status;
+
+-- In the Airline database write the SQL script to find the most often booked aircraft by gold status members (this should require a join).