SELECT
JSON_ARRAYAGG(
JSON_OBJECT(
'id', f.film_id,
'title', f.title,
'category', c.name
)
) AS films
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';