Magnus Krumbacher

sql/products/core_and_extension.sql

@@ -0,0 +1,62 @@
+CREATE TABLE films(
+	id serial primary key,
+ 	title varchar(255) unique not null,
+ 	genre varchar(255) not null,
+ 	release_year int not null,
+ 	score int not null
+);
+
+INSERT INTO films (title, genre, release_year, score)
+VALUES
+('The Shawshank Redemption', 'Drama', 1994, 9),
+('The Godfather', 'Crime', 1972, 9),
+('The Dark Knight', 'Action', 2008, 9),
+('Alien', 'SciFi', 1979, 9),
+('Total Recall', 'SciFi', 1990, 8),
+('The Matrix', 'SciFi', 1999, 8),
+('The Matrix Resurrections', 'SciFi', 2021, 5),
+('The Matrix Reloaded', 'SciFi', 2003, 6),
+('The Hunt for Red October', 'Thriller', 1990, 7),
+('Misery', 'Thriller', 1990, 7),
+('The Power Of The Dog', 'Western', 2021, 6),
+('Hell or High Water', 'Western', 2016, 8),
+('The Good the Bad and the Ugly', 'Western', 1966, 9),
+('Unforgiven', 'Western', 1992, 7);
+
+
+SELECT * FROM films;
+SELECT * FROM films ORDER BY score DESC;
+SELECT * FROM films ORDER BY release_year ASC;
+SELECT * FROM films WHERE score >= 8;
+SELECT * FROM films WHERE score <= 7;
+SELECT * FROM films WHERE release_year = 1990;
+SELECT * FROM films WHERE release_year < 2000;
+SELECT * FROM films WHERE release_year > 1990;
+SELECT * FROM films WHERE release_year >= 1990 AND release_year <= 1999;
+SELECT * FROM films WHERE genre = 'SciFi';
+SELECT * FROM films WHERE genre = 'SciFi' OR genre = 'Western';
+SELECT * FROM films WHERE genre != 'SciFi';
+SELECT * FROM films WHERE genre = 'Western' AND release_year < 2000;
+SELECT * FROM films WHERE title LIKE '%Matrix%';
+
+SELECT COUNT(id) FROM films;
+SELECT AVG(score) FROM films;
+SELECT AVG(score) FROM films GROUP BY genre;
+
+INSERT INTO directors (name)
+VALUES
+    ('Director 1'),
+    ('Director 2'),
+    ('Director 3'),
+    ('Director 4');
+
+SELECT *
+FROM films
+JOIN directors
+ON films.director_id = directors.id;
+
+SELECT directors.name, COUNT(directors.name)
+FROM films
+JOIN directors
+ON films.director_id = directors.id GROUP BY directors.name;
+