Question

桌面游戏

Home |  Visitor    | Spectators
-----------------------------------
a    |    b        |   12
b    |    c        |   15  
a    |    c        |   32
b    |    a        |   3
c    |    a        |   8

表格小组

id  |  name
--------------
a   |  TeamA
b   |  TeamB
c   |  TeamC

现在我需要计算每支球队的总观众数（主场+参赛者）

A = 12 + 12 + 3 + 8
B = 12 + 15 + 3

Answer 1

是否需要按照表格团队显示的方式进行格式化？如果没有，这应该适合你：

y_true

这将输出为：

select top 1 
    (select sum(spectators) from sheet1 where home='a' or visitor='a') as teama,
    (select sum(spectators) from sheet1 where home='b' or visitor='b') as teamb,
    (select sum(spectators) from sheet1 where home='c' or visitor='c') as teamc 
from sheet1;

Answer 2

有很多方法可以做到，这是另一种方法：

SELECT name,sum(sum)
FROM
    (SELECT t.name,SUM(g.spectators)
    FROM teams t, games g WHERE t.id=home
    GROUP BY t.name
    UNION
    SELECT t.name,SUM(g.spectators)
    FROM teams t, games g WHERE t.id=visitor
    GROUP BY t.name)visits
GROUP BY name

从表中计算观众总和

2 个答案: