mysql使用技巧 行类视图子查询
标签：key font where cell 分类 使用 mount 而且 creat
mysql使用技巧 行类视图子查询
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