1SELECT 2 *, 3 ( 4 SELECT 5 name 6 FROM 7 category 8 join film_category using(category_id) 9 where10 film_id = film.film_id11 )12FROM13 film
You should use the app on a larger display:
MySQL EXPLAINs include a lot of data that can not be simplified enough for a great experience on small mobile screens.