core exercise+extension 1 and 2 complete

sql/products/core-queries.sql

@@ -0,0 +1,68 @@
+-- All films
+select *
+from films
+
+-- All films ordered by rating descending
+select *
+from films
+ORDER BY score DESC
+
+--All films ordered by release year ascending
+select *
+from films
+ORDER BY releaseYear ASC
+
+--All films with a rating of 8 or higher
+select *
+from films
+where score >= 8
+
+--All films with a rating of 7 or lower
+select *
+from films
+where score <= 7
+
+--films released in 1990
+select *
+from films
+where releaseYear = 1990
+
+-- films released before 2000
+select *
+from films
+where releaseYear < 2000
+
+-- films released after 1990
+select *
+from films
+where releaseYear > 1990
+
+-- films released between 1990 and 1999
+select *
+from films
+where releaseYear >= 1990 and releaseYear <= 1999
+
+-- films with the genre of "SciFi"
+select *
+from films
+where genre like 'SciFi'
+
+-- films with the genre of "Western" or "SciFi"
+select *
+from films
+where genre like 'SciFi' or genre like 'Western'
+
+-- films with any genre apart from "SciFi"
+select *
+from films
+where genre not like 'SciFi'
+
+-- films with the genre of "Western" released before 2000
+select *
+from films
+where genre like 'Western' and releaseYear < 2000
+
+-- films that have the world "Matrix" in their title
+select *
+from films
+where title like '%Matrix%'

sql/products/create-products.sql

@@ -1,8 +1,9 @@
-CREATE TABLE products(
- id serial primary key,
- name varchar(255) not null,
- price int not null,
- discount boolean,
- unique(name)
-)
 
+-- film table
+CREATE TABLE IF NOT EXISTS films (
+id integer GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+title VARCHAR(128) NOT NULL UNIQUE,
+genre VARCHAR(64) NOT NULL,
+releaseYear integer NOT NULL,
+score integer NOT NULL
+);

sql/products/extension1-queries.sql

@@ -0,0 +1,15 @@
+-- Return the average film rating
+select AVG(score)
+from films
+as average_score
+
+-- Return the total number of films
+select Count(*) as total_films
+from films
+
+-- Return the average film rating by genre
+select genre, AVG(score)
+from films
+as average_score
+GROUP BY genre
+

sql/products/extension2-queries.sql

@@ -0,0 +1,48 @@
+
+-- director table
+CREATE TABLE IF NOT EXISTS directors (
+id integer GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+name VARCHAR(64) NULL UNIQUE,
+);
+
+-- film table
+CREATE TABLE IF NOT EXISTS films (
+id integer GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+directorsId integer NOT NULL,
+title VARCHAR(128) NOT NULL UNIQUE,
+genre VARCHAR(64) NOT NULL,
+release_year integer NOT NULL,
+rating integer NOT NULL,
+CONSTRAINT fk_director FOREIGN KEY (directorsId) REFERENCES directors(id)
+);
+
+
+-- Insert sample data into users table
+INSERT INTO directors (name)
+VALUES
+  ('Steven Spielberg'),
+  ('James Cameron'),
+  ('Michael Scorcese');
+
+-- Insert sample data into users table
+INSERT INTO films (directorsId,title, genre, release_year, rating)
+VALUES
+  (1,'The Shawshank Redemption', 'Drama', 1994, 9),
+  (2,'The Godfather', 'Crime', 1972, 9),
+  (3,'The Dark Knight', 'Action', 2008, 9),
+  (3,'Alien', 'SciFi', 1979, 9),
+  (2,'Total Recall', 'SciFi', 1990, 8),
+  (3,'The Matrix', 'SciFi', 1999, 8),
+  (1,'The Matrix Resurrections', 'SciFi', 2021, 5),
+  (1,'The Matrix Reloaded', 'SciFi', 2003, 6),
+  (1,'The Hunt for Red October', 'Thriller', 1990, 7),
+  (2,'Misery', 'Thriller', 1990, 7),
+  (3,'The Power Of The Dog', 'Western', 2021, 6),
+  (2,'Hell or High Water', 'Western', 2016, 8),
+  (2,'The Good the Bad and the Ugly', 'Western', 1966, 9),
+  (1,'Unforgiven', 'Western', 1992, 7);
+
+  select f.title as movie_title, f.directorsId as directors_id, d.name as directors_name
+  from films f
+  join directors d
+  on f.directorsId = d.id

sql/products/insert-products.sql

@@ -1,4 +1,17 @@
-insert into products(name, price, discount) VALUES ('apple', 135, false);
-insert into products(name, price, discount) VALUES ('orange', 55, true);
-insert into products(name, price, discount) VALUES ('kiwi', 165, true);
-insert into products(name, price, discount) VALUES ('banana', 035, false);
+-- Insert sample data into users table
+INSERT INTO films (title, genre, releaseYear, 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);