SQL查找与另一个表中的所有项匹配的所有项

Question

我有两个表:

人:

id,first_name,colorid
1,Mona,1
2,Davita,1
3,Mona,3
4,Davita,3
5,Marya,3
6,Mona,2
7,Whitby,3
8,Hardy,1
9,Hardy,2
10,Haskel,3

和颜色表:

id,color
1,Green
2,Black
3,Red

我想找到具有颜色表中所有颜色的first_names。

my attempt is:

SELECT DISTINCT P.first_name AS NAMES
FROM Persons P
JOIN Colors C ON C.id= P.colorid;

正确吗?

Answer 1

select first_name 
from person 
group by first_name
having count(distinct colorid)  = (select count(*) from color)