refactor 1050

Author: fishercoder1534

database/_1050.sql

@@ -1,42 +1,3 @@
---1050. Actors and Directors Who Cooperated At Least Three Times
---
---Table: ActorDirector
---
---+-------------+---------+
---| Column Name | Type    |
---+-------------+---------+
---| actor_id    | int     |
---| director_id | int     |
---| timestamp   | int     |
---+-------------+---------+
---timestamp is the primary key column for this table.
---
---
---Write a SQL query for a report that provides the pairs (actor_id, director_id) where the actor have cooperated with the director at least 3 times.
---
---Example:
---
---ActorDirector table:
---+-------------+-------------+-------------+
---| actor_id    | director_id | timestamp   |
---+-------------+-------------+-------------+
---| 1           | 1           | 0           |
---| 1           | 1           | 1           |
---| 1           | 1           | 2           |
---| 1           | 2           | 3           |
---| 1           | 2           | 4           |
---| 2           | 1           | 5           |
---| 2           | 1           | 6           |
---+-------------+-------------+-------------+
---
---Result table:
---+-------------+-------------+
---| actor_id    | director_id |
---+-------------+-------------+
---| 1           | 1           |
---+-------------+-------------+
---The only pair is (1, 1) where they cooperated exactly 3 times.
-
 --# Write your MySQL query statement below
 select actor_id, director_id from ActorDirector
 group by actor_id, director_id