Pedro Barros "Lab Done"

lab-sql-advanced-queries.sql

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+-- 1. List each pair of actors that have worked together.
+SELECT *
+FROM SAKILA.FILM_ACTOR
+ORDER BY 2,1;
+
+
+SELECT Actor1.ACTOR_ID AS ACTOR1, Actor2.ACTOR_ID AS ACTOR2, Actor1.FILM_ID
+FROM SAKILA.FILM_ACTOR Actor1
+INNER JOIN SAKILA.FILM_ACTOR Actor2 
+ON Actor1.FILM_ID = Actor2.FILM_ID
+AND Actor1.ACTOR_ID <> Actor2.ACTOR_ID;
+
+-- 2. For each film, list actor that has acted in more films
+
+WITH ACTORSplus AS
+(SELECT
+F.TITLE,
+FA.FILM_ID,
+CONCAT(A.FIRST_NAME, ' ', A.LAST_NAME) AS ACTOR_NAME
+FROM SAKILA.ACTOR A
+INNER JOIN SAKILA.FILM_ACTOR FA ON A.ACTOR_ID = FA.ACTOR_ID
+INNER JOIN SAKILA.FILM F ON FA.FILM_ID = F.FILM_ID)
+SELECT DISTINCT FILM_ID, TITLE, ACTOR_NAME, FILM_COUNT
+FROM (
+SELECT *, MAX(FILM_COUNT) OVER (PARTITION BY TITLE) AS MAX_FILM_COUNT
+FROM (
+SELECT *, COUNT(FILM_ID) OVER (PARTITION BY ACTOR_NAME) AS FILM_COUNT
+FROM CTE_PROLIFIC_ACTORS
+ORDER BY FILM_COUNT) SUB1) SUB2
+WHERE FILM_COUNT = MAX_FILM_COUNT;
+
+