clase30

clase30/resuelto.sql

@@ -0,0 +1,37 @@
+-- 
+SELECT DISTINCT actors.first_name, actors.last_name  
+FROM actors
+INNER JOIN actor_movie ON actor_movie.actor_id = actors.id
+INNER JOIN movies ON actor_movie.movie_id = movies.id
+WHERE movies.title LIKE '%guerra%';
+
+SELECT movies.title, COALESCE(genres.name, 'no tiene género') as genre
+FROM movies
+LEFT JOIN genres ON genres.id = movies.genre_id;
+
+SELECT movies.title, genres.name
+FROM movies
+LEFT JOIN genres ON genres.id = movies.genre_id;
+
+SELECT title AS Titulo, DATEDIFF(end_date, release_date) AS duracion 
+FROM movies_db.series;
+
+SELECT title AS Titulo, TIMESTAMPDIFF(day, release_date, end_date) AS duracion 
+FROM movies_db.series;
+
+SELECT * FROM actors 
+WHERE LENGTH(first_name) > 6
+ORDER BY first_name;
+
+SELECT count(*) AS cantidad_episodios FROM episodes;
+
+SELECT series.title, count(seasons.id) AS cant_temporadas
+FROM series
+INNER JOIN seasons ON series.id = seasons.serie_id
+GROUP by series.id;
+
+SELECT genres.name, count(movies.title) as title
+FROM movies
+INNER JOIN genres ON genres.id = movies.genre_id
+GROUP BY genres.id
+HAVING COUNT(*) >= 3;