php - 按百分比计算的 SQL 总计

Question

我想要一个 SQL 查询

Shop    Regio    target1    sold1    target2    sold2 
shop1   regioA   6          3        10         5
shop2   regioA   4          2        4          2
shop3   regioB   6          0        3          0
shop4   regioC   9          9        8          8
shop5   regioB   8          4        2          1

至

regioC      100%
regioA       50%
regioB       25%

（别管数字，我只是编的）

我尝试使用它，但它没有用：

SELECT regio, SUM((sold2/target1)+(sold2/target2)) AS total 
FROM  `winkels` GROUP BY `regio` ORDER BY total DESC 

任何想法如何使它正确？

Answer 1

这应该有效。您试图将百分比相加，而不是除以总数。

SELECT regio, 100*SUM(sold1+sold2)/sum(target1 +target2) AS total 
FROM  `winkels` GROUP BY `regio` ORDER BY total DESC