Elisabeth Røysland

Extension.sql

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+-- Task 1
+
+-- Create people table and insert values
+CREATE TABLE people (
+  id SERIAL PRIMARY KEY,
+  name VARCHAR(100) NOT NULL,
+  country VARCHAR (100),
+  DOB DATE,
+  email VARCHAR(100)
+);
+
+INSERT INTO people (name, country, DOB, email)
+VALUES
+  ('Stanley Kubrick', 'USA', NULL, NULL),
+  ('George Lucas', 'USA', NULL, '[email protected]'),
+  ('Robert Mulligan', 'USA', NULL, NULL),
+  ('James Cameron', 'Canada', NULL, '[email protected]'),
+  ('David Lean', 'UK', NULL, NULL),
+  ('Anthony Mann', 'USA', NULL, NULL),
+  ('Theodoros Angelopoulos', 'Greece', NULL, '[email protected]'),
+  ('Paul Verhoeven', 'Netherlands', NULL, NULL),
+  ('Krzysztof Kieslowski', 'Poland', NULL, '[email protected]'),
+  ('Jean-Paul Rappeneau', 'France', NULL, NULL),
+  ('Keir Dullea', NULL, '1936-05-30', NULL),
+  ('Mark Hamill', NULL, '1951-09-25', NULL),
+  ('Gregory Peck', NULL, '1916-04-05', NULL),
+  ('Leonardo DiCaprio', NULL, '1974-11-11', NULL),
+  ('Julie Christie', NULL, '1940-04-14', NULL),
+  ('Charlton Heston', NULL, '1923-10-04', NULL),
+  ('Manos Katrakis', NULL, '1908-08-14', NULL),
+  ('Rutger Hauer', NULL, '1944-01-23', NULL),
+  ('Juliette Binoche', NULL, '1964-03-09', NULL),
+  ('Gerard Depardieu', NULL, '1948-12-27', NULL),
+  ('Arthur C Clarke', NULL, NULL, '[email protected]'),
+  ('Harper Lee', NULL, NULL, '[email protected]'),
+  ('Boris Pasternak', NULL, NULL, '[email protected]'),
+  ('Frederick Frank', NULL, NULL, '[email protected]'),
+  ('Erik Hazelhoff Roelfzema', NULL, NULL, '[email protected]'),
+  ('Edmond Rostand', NULL, NULL, '[email protected]');
+
+-- Create films table and insert values
+CREATE TABLE films(
+  id SERIAL PRIMARY KEY,
+  title VARCHAR(100) NOT NULL,
+  year INTEGER NOT NULL,
+  genre VARCHAR(100) NOT NULL,
+  score INTEGER NOT NULL,
+);
+
+INSERT INTO films (title, year, genre, score)
+VALUES
+  ('2001: A Space Odyssy', 1968, 'Science Fiction', 10),
+  ('Star Wars: A New Hope', 1977, 'Science Fiction', 7),
+  ('To Kill A Mockingbird', 1962, 'Drama', 10),
+  ('Titanic', 1997, 'Romance', 5),
+  ('Dr Zhivago', 1965, 'Historical', 8),
+  ('El Cid', 1961, 'Historical', 6),
+  ('Voyage to Cythera', 1984, 'Drama', 8),
+  ('Soldier of Orange', 1977, 'Thriller', 8),
+  ('Three Colours: Blue', 1993, 'Drama', 8),
+  ('Cyrano de Bergerac', 1990, 'Historical', 9);
+
+-- Create roles table and insert values
+CREATE TABLE roles(
+  id SERIAL PRIMARY KEY,
+  name VARCHAR(100) NOT NULL
+);
+
+INSERT INTO roles (name)
+VALUES ('Director'), ('Star'), ('Writer');
+
+-- Create PersonFilmRole table and insert values
+CREATE TABLE PersonFilmRole (
+  id SERIAL PRIMARY KEY,
+  personID INTEGER NOT NULL,
+  filmID INTEGER NOT NULL,
+  roleID INTEGER NOT NULL,
+  FOREIGN KEY (personID) REFERENCES people(id),
+  FOREIGN KEY (filmID) REFERENCES films(id),
+  FOREIGN KEY (roleID) REFERENCES roles(id)
+);
+
+INSERT INTO PersonFilmRole (personID, filmID, roleID )
+VALUES
+  (1, 1, 1),
+  (11, 1, 2),
+  (21, 1, 3),
+  (2, 2, 1),
+  (12, 2, 2),
+  (2, 2, 3),
+  (3, 3, 1),
+  (13, 3, 2),
+  (22, 3, 3),
+  (4, 4, 1),
+  (14, 4, 2),
+  (4, 4, 3),
+  (5, 5, 1),
+  (15, 5, 2),
+  (23, 5, 3),
+  (6, 6, 1),
+  (16, 6, 2),
+  (24, 6, 3),
+  (7, 7, 1),
+  (17, 7, 2),
+  (7, 7, 3),
+  (8, 8, 1),
+  (18, 8, 2),
+  (25, 8, 3),
+  (9, 9, 1),
+  (19, 9, 2),
+  (9, 9, 3),
+  (10, 10, 1),
+  (20, 10, 2),
+  (26, 10, 3);
+
+
+-- Queries
+
+-- i. Show the title and director name for all films
+SELECT f.title, p.name as director
+FROM films f
+LEFT JOIN PersonFilmRole m ON f.id = m.filmID
+LEFT JOIN people p ON m.personID = p.id
+WHERE m.roleID = 1
+
+-- ii. Show the title, director and star name for all films
+SELECT f.title, pd.name as director, ps.name as star
+FROM films f
+LEFT JOIN PersonFilmRole md ON f.id = md.filmID AND md.roleID = 1
+LEFT JOIN people pd ON md.personID = pd.id
+LEFT JOIN PersonFilmRole ms ON f.id = ms.filmID AND ms.roleID = 2
+LEFT JOIN people ps ON ms.personID = ps.id
+
+-- iii. Show the title of films where the director is from the USA
+SELECT f.title, p.name as director, p.country
+FROM films f
+LEFT JOIN PersonFilmRole m ON f.id = m.filmID AND m.roleID = 1
+LEFT JOIN people p ON m.personID = p.id
+WHERE p.country = 'USA';
+
+-- iv. Show only those films where the writer and the director are the same person
+SELECT f.title, p.name as "Director & Writer"
+FROM films f
+LEFT JOIN PersonFilmRole md ON f.id = md.filmID AND md.roleID = 1
+LEFT JOIN PersonFilmRole mw ON f.id = mw.filmID AND mw.roleID = 3
+LEFT JOIN people p ON md.personID = p.id AND mw.personID = p.id
+WHERE md.personID = mw.personID
+
+-- v. Show directors and film titles for films with a score of 8 or higher
+SELECT f.title, p.name as director, f.score
+FROM films f
+LEFT JOIN PersonFilmRole m ON f.id = m.filmID AND m.roleID = 1
+LEFT JOIN people p ON m.personID = p.id
+WHERE f.score >= 8;
+
+-- vi. Make at least 5 more queries to demonstrate your understanding of joins, and other relationships between tables.
+
+-- 1. Show film titles, year, writer name and email for filmes created after 1980
+SELECT f.title, f.year, w.name as writer, w.email
+FROM films f
+LEFT JOIN PersonFilmRole m ON f.id = m.filmID AND m.roleID = 3
+LEFT JOIN people w ON m.personID = w.id
+WHERE f.year > 1980;
+
+-- 2. Show all the films properties, but with the name of the director, star and writer
+SELECT f.title, f.year, f.genre, f.score, d.name as director, s.name as star, w.name as writer
+FROM films f
+LEFT JOIN PersonFilmRole md ON f.id = md.filmID AND md.roleID = 1
+LEFT JOIN people d ON md.personID = d.id
+LEFT JOIN PersonFilmRole ms ON f.id = ms.filmID AND ms.roleID = 2
+LEFT JOIN people s ON ms.personID = s.id
+LEFT JOIN PersonFilmRole mw ON f.id = mw.filmID AND mw.roleID = 3
+LEFT JOIN people w ON mw.personID = w.id
+
+-- 3. Show film titles and stars name and DOB, but only for those film where the stars are born before 1950
+SELECT f.title, s.name as star, s.DOB
+FROM films f
+LEFT JOIN PersonFilmRole ms ON f.id = ms.filmID AND ms.roleID = 2
+LEFT JOIN people s ON ms.personID = s.id
+WHERE s.DOB <= '1950-01-01';
+
+-- 4. Show film titles, director and director country, but only for those films where the director is not from USA or UK
+SELECT f.title, d.name as director, d.country
+FROM films f
+LEFT JOIN PersonFilmRole md ON f.id = md.filmID AND md.roleID = 1
+LEFT JOIN people d ON md.personID = d.id
+WHERE d.country != 'USA' AND d.country != 'UK';
+
+-- 5. Show film titles, genre and star name, but only for those films where the genre is romance or drama
+SELECT f.title, f.genre, s.name as star
+FROM films f
+LEFT JOIN PersonFilmRole ms ON f.id = ms.filmID AND ms.roleID = 2
+LEFT JOIN people s ON ms.personID = s.id
+WHERE f.genre = 'Romance' OR f.genre = 'Drama';
+
+
+
+-- Task 2
+
+-- Insert other actors into people
+INSERT INTO people (name, country, DOB, email)
+VALUES
+  ('John Megna', NULL, '1952-11-09', NULL),
+  ('Frank Overton', NULL, '1918-03-12', NULL),
+  ('Kate Winslet', NULL, '1975-10-05', NULL),
+  ('Billy Zane', NULL, '1966-02-24', NULL);
+
+-- I reused my original three tables.
+-- First, I added a 4th role to the roles table
+INSERT INTO roles (name) VALUES ('Actor')
+
+-- Second, I linked the new actors to the movies they were in
+INSERT INTO PersonFilmRole (personID, filmID, roleID )
+VALUES
+  (27, 3, 4),
+  (28, 3, 4),
+  (29, 4, 4),
+  (30, 4, 4);
+
+-- Third, I created a query to list all the actors and stars in Titanic
+SELECT f.title as film, a.name as cast, r.name as role
+FROM films f
+LEFT JOIN PersonFilmRole ma ON f.id = ma.filmID
+LEFT JOIN people a ON ma.personID = a.id
+LEFT JOIN roles r ON ma.roleID = r.id
+WHERE f.title = 'Titanic' AND (r.name = 'Star' OR r.name = 'Actor');