Task: Text to Code
Input (English): Step 1: For each row in film table, find the corresponding rows in inventory table.
Step 2: for each value of inventory's film_id in the results of step 1, calculate number of rows.
Step 3: show each value of inventory's film_id in the results of step 1 along with the maximum rental_rate with largest value in the results of step 2
Output (English): SELECT T1.rating , Max ( T1.rental_rate ) FROM film AS T1 JOIN inventory AS T2 ON T1.film_id = T2.film_id GROUP BY T2.film_id ORDER BY Count ( * ) Desc LIMIT 1