diff --git a/lab-sql-self-cross-join.sql b/lab-sql-self-cross-join.sql
new file mode 100644
index 0000000..a9a78bf
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+++ b/lab-sql-self-cross-join.sql
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+-- 1. Get all pairs of actors that worked together.
+
+SELECT *
+FROM SAKILA.FILM_ACTOR
+ORDER BY 2,1;
+
+
+SELECT FA1.ACTOR_ID AS ACTOR_ID_FIRST, FA2.ACTOR_ID AS ACTOR_ID_SECOND, FA1.FILM_ID
+FROM SAKILA.FILM_ACTOR FA1
+INNER JOIN SAKILA.FILM_ACTOR FA2 
+ON FA1.FILM_ID = FA2.FILM_ID
+AND FA1.ACTOR_ID <> FA2.ACTOR_ID
+;
+    
+-- 2. Get all pairs of customers that have rented the same film more than 3 times.
+
+SELECT * FROM SAKILA.RENTAL;
+
+SELECT R1.CUSTOMER_ID AS CUSTOMER1, R2.CUSTOMER_ID AS CUSTOMER2, COUNT(*) AS RENTAL_COUNT
+FROM SAKILA.RENTAL R1
+JOIN SAKILA.RENTAL R2 
+ON R1.INVENTORY_ID = R2.INVENTORY_ID
+AND R1.CUSTOMER_ID <> R2.CUSTOMER_ID
+GROUP BY CUSTOMER1, CUSTOMER2 
+HAVING COUNT(*) > 3;
+
+-- 3. Get all possible pairs of actors and films.
+
+SELECT * FROM SAKILA.FILM_ACTOR;
+SELECT * FROM SAKILA.FILM;
+
+SELECT FA.ACTOR_ID, F.FILM_ID, F.TITLE
+FROM SAKILA.FILM_ACTOR FA
+CROSS JOIN SAKILA.FILM F;
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