select - 有没有办法把它压缩成 2 列？计数（列名）

Question

SELECT COUNT(title) AS SH
FROM movies
where genre = 'SH';

SELECT COUNT(title) AS CH
FROM movies
where genre = 'CH';

SELECT COUNT(title) AS ADV
FROM movies
where genre = 'ADV';

SELECT COUNT(title) AS COM
FROM movies
where genre = 'COM';

SELECT COUNT(title) AS DR
FROM movies
where genre = 'DR';

SELECT COUNT(title) AS SF
FROM movies
where genre = 'SF'

Answer 1

SELECT count(*), genre
FROM movies
GROUP BY genre;

Answer 2

你的意思是这样吗？

从电影中选择流派，计数（标题）按流派分组