SQLite选择专辑的数量

Question

我想选择具有相册数量的唯一艺术家。

在MusicLibrary表格中，会保存各首歌曲。 （标题，艺术家，专辑......）

我试过了：

SELECT distinct artist, album, Count(*) from MusicLibrary group by artist order by artist

但是我得到了歌曲的数量。

如果有人能帮助我，我将非常感激

Answer 1

由于您保存该表格中的每首歌曲，因此您需要在计数中使用distinct来计算唯一的专辑，而不是每位艺术家的歌曲数量

SELECT artist, Count(distinct album) as albums
from MusicLibrary 
group by artist 
order by artist 

Answer 2

SELECT artist, Count(album)
from MusicLibrary
group by artist
order by artist