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Genres in Common (INTERSECT)
Find genres that have both a movie rated above 8.0 and a movie with revenue above $200M. Use the INTERSECT set operation. Show just the genre column, sorted alphabetically. Then, in a second query using EXCEPT, find genres that have a highly-rated movie (rating > 8.0) but no movie with revenue above $200M. INTERSECT/EXCEPT are asked at Microsoft and Oracle because they test set theory thinking, which most devs ignore.
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Schema
movies
| id | title | year | genre | rating | votes | revenue_millions | runtime | director |
|---|---|---|---|---|---|---|---|---|
| 1 | Guardians of the Galaxy | 2014 | Action | 8.1 | 757074 | 333.13 | 121 | James Gunn |
| 2 | Prometheus | 2012 | Adventure | 7 | 485820 | 126.46 | 124 | Ridley Scott |
| 3 | Split | 2016 | Horror | 7.3 | 157606 | 138.12 | 117 | M. Night Shyamalan |
Expected output: Genres appearing in both high-rating and high-revenue sets
Hint
Concepts
SELECT INTERSECT Set Operations
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