Last Updated: 3 Sep, 2021
Director's Actor
Easy
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 co-worked 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 co-worked exactly 3 times.
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