mysql usage tips row class view subquery

Find the description name including the category name and the number of movies corresponding to the movies of the robot, and also need the number of movies corresponding to the category> = 5

The film table is a movie table, the category table is a movie classification table, and the film_category table is an intermediate table between a movie table and a movie classification table (many-to-many intermediate table)

film table

Field	Explanation
film_id	Movie id
title	Movie title
description	Movie description information

CREATE TABLE IF NOT EXISTS film (

film_id smallint(5)  NOT NULL DEFAULT '0',

title varchar(255) NOT NULL,

description text,

PRIMARY KEY (film_id));

                                                                                                                         

category table

Field	Explanation
category_id	Movie category id
name	Movie category name
last_update	Movie Category Last Update Time

CREATE TABLE category  (

category_id  tinyint(3)  NOT NULL ,

name  varchar(25) NOT NULL, `last_update` timestamp,

PRIMARY KEY ( category_id ));

                                                                                                                                     

film_category table

Field	Explanation
film_id	Movie id
category_id	Movie category id
last_update	The last update time of the correspondence between movie id and category id

CREATE TABLE film_category  (

film_id  smallint(5)  NOT NULL,

category_id  tinyint(3)  NOT NULL, `last_update` timestamp);

SELECT c.name, COUNT(f.film_id) AS amount
FROM film AS f, film_category AS fc, category AS c,
(SELECT category_id FROM film_category GROUP BY category_id HAVING COUNT(category_id) >= 5) AS cc
WHERE f.description LIKE '%robot%'
AND f.film_id = fc.film_id
AND fc.category_id = c.category_id
AND c.category_id = cc.category_id