sql选择是否有多次

Question

我有两个共享相同ID的表：

表颜色：

id  color
---------
1   blue
1   red
1   green
1   blue
2   green
2   yellow
2   orange
3   red
3   orange
3   yellow
3   orange

表名：

id   name
---------
1    John
2    Anna
3    Mike

查找任何颜色出现多次的名称的查询是什么。

例如：约翰和迈克是答案，因为约翰有两次蓝色而麦克也有两次橙色。

非常感谢

Answer 1

SELECT A.name, B.color, count(*) 'color count' 
FROM Names A JOIN Colors B on A.id = B.id
GROUP BY A.id, B.color
HAVING Count(*)>1

在这里查看 http://sqlfiddle.com/#!2/ee040/3

Answer 2

SELECT name, color, COUNT(*)
FROM Names
JOIN Colors
  ON Names.id = Colors.id
GROUP BY name, color
HAVING COUNT(*) > 1

Answer 3

SELECT DISTINCT n.name FROM Colour c
INNER JOIN Names n ON (n.id = c.id)
GROUP BY n.name, c.colour
HAVING COUNT(*) > 1

Answer 4

Select n.Name
From names n
Join colors c on c.ID = n.ID
Group by n.Name
Having count(c.color) <> count(distinct c.color)