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Task 1:

Adjust Rental Cost

MySQL
 Adjust the rental cost of films as follows:

- Reduce the rental cost for films in category G by 5%.
- Increase the rental cost for films in categories R and NC-17 (films for adults) by 20%.
- Increase the rental cost for all other films by 5%.

Make all changes in one request.
Expected result Columns: 2 · Rows: 1000
film_id rental_rate

Sample rows open after wrong checks: 0 of 2

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