如何删除MySQL查询结果中的一列？

Question

例:

SELECT `film_id`,COUNT(film_id) AS COUNT FROM films_genres AS FilmsGenre   
WHERE genre_id In (4)  
GROUP BY film_id,COUNT 
HAVING COUNT = 1 

返回:

film_id |  COUNT
7            1   
6            1

但我想要它回归:

film_id
  7
  6

我如何只返回1个colomn？

Answer 1

要做到这一点,只需移动你的" COUNT(film_id)".您的HAVING条款将为您完成工作.

SELECT `film_id` FROM films_genres AS FilmsGenre
WHERE genre_id In (4)
GROUP BY anime_id,film_id
HAVING COUNT(film_id) = 1