INSERT INTO movies (title, runtime, genre, imdb_score, rating) 
VALUES('Howard the Duck', '110', 'Sci-Fi', '4.6', 'PG'),
('Lavalantula', '83', 'Horror', '4.7', 'TV-14'),
('Starship Troopers', '129', 'Sci-Fi', '7.2', 'PG-13'), 
('Waltz With Bashir', '90', 'Documentary', '8.0', 'R'),
('Spaceballs', '96', 'Comedy', '7.1', 'PG'),
('Monsters Inc.', '92', 'Animation', '8.1', 'G'), 
('The Shawshank Redemption', '142', 'Drama', '9.3', 'R'), 
('The Godfather', '175', 'Drama', '9.2', 'R');



SELECT * 
FROM movies 
WHERE genre = 'Sci-Fi';



SELECT *
FROM movies
WHERE imdb_score >= '6.5';



SELECT title, rating, runtime
FROM movies
WHERE rating = 'G' OR rating = 'PG' AND runtime < '100';



SELECT AVG(runtime), genre 
FROM movies 
WHERE imdb_score < '7.5' 
GROUP BY genre;



UPDATE movies 
SET rating = 'R' 
WHERE title = 'Starship Troopers';



SELECT id, title, rating, genre 
FROM movies 
WHERE genre = 'Horror' OR genre = 'Documentary';



SELECT AVG(imdb_score), MAX(imdb_score), MIN(imdb_score), rating
FROM movies
GROUP BY rating;




SELECT AVG(imdb_score), MAX(imdb_score), MIN(imdb_score), rating
FROM movies
GROUP BY rating HAVING COUNT(*)>1;




DELETE FROM movies
WHERE rating = 'R';