SELECT JSON_ARRAYAGG(
JSON_OBJECT(
"id", f.film_id,
"title", f.title,
"category", c.name
)
) AS movies
FROM film f
JOIN film_category fc ON f.film_id = fc.film_id
JOIN category c ON fc.category_id = c.category_id
ORDER BY f.film_id;
;
show status like 'Last_query_cost';