Question

表：用户

Color
1
2
2
2
1
3

表：颜色

ID      Name
1       Orange
2       Yellow
3       Pink
4       Blue

预期结果

Color      Total
Orange     2
Yellow     3
Pink       1

Mysql查询：

SELECT * FROM User LEFT JOIN Color ON Color.ID = User.Color;

如何获得预期结果？请帮我。并提前感谢。

Answer 1

SELECT c.NAME, COUNT(*) AS Total 
FROM Color c
INNER JOIN User u ON (u.Color = c.Id)
GROUP BY c.NAME;

Answer 2

这将有助于您这样做。兄弟：）

SELECT C.Name, COUNT(U.Color) as Total from Color C
            LEFT JOIN User U 
            ON
            U.Color = C.ID
            GROUP by C.ID,C.Name

谢谢！

Answer 3

@Shah Rushabh使用U.Color的小组，如下所示，你会得到你的结果：

SELECT C.Name, COUNT(U.Color) as Total from user as U 
inner join color as C on 
U.Color = C.Id GROUP BY U.Color

MYSQL计数和连接查询

3 个答案: