Easy my~SQL sol || think of group by / having / count
\nselect actor_id , director_id \nfrom actordirector \ngroup by actor_id ,director_id\nhaving count(*)>=3 ; \n\nThanks
```\nselect actor_id , director_id \nfrom actordirector \ngroup by actor_id ,director_id\nhaving count(*)>=3 ; \n```\n***Thanks***
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