text: ALTER TABLE movie
    ADD director VARCHAR(100);
  
  INSERT INTO movie
  VALUES (2, 'Stranger Things', 'Matt Duffer');
  INSERT INTO movie_category
  VALUES (2, (SELECT category_id FROM category WHERE name = 'horror'));
  INSERT INTO movie_category
  VALUES (2, (SELECT category_id FROM category WHERE name = 'thriller'));
  INSERT INTO movie_category
  VALUES (2, (SELECT category_id FROM category WHERE name = 'SCI-FI'));
  
  INSERT INTO movie
  VALUES (3, 'Orange is The New Black', 'Jenji Kohan');
  INSERT INTO movie_category
  VALUES (3, (SELECT category_id FROM category WHERE name = 'komedia'));
  INSERT INTO movie_category
  VALUES (3, (SELECT category_id FROM category WHERE name = 'dramat'));
  
  INSERT INTO movie
  VALUES (4, 'Dark', 'Baran bo Odar');
  INSERT INTO movie_category
  VALUES (4, (SELECT category_id FROM category WHERE name = 'thriller'));
  
  INSERT INTO movie
  VALUES (5, 'Friends', 'David Crane');
  INSERT INTO movie_category
  VALUES (5, (SELECT category_id FROM category WHERE name = 'komedia'));
  
  INSERT INTO movie
  VALUES (6, 'Belfer', 'Bartłomiej Ignaciuk');
  INSERT INTO movie_category
  VALUES (6, (SELECT category_id FROM category WHERE name = 'thriller'));
  INSERT INTO movie_category
  VALUES (6, (SELECT category_id FROM category WHERE name = 'dramat'));
  