php - SQL 总计百分比计算

Question

我想要一个 SQL 查询从

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

到

regioC      100%
regioA       50%
regioB       25%

(不要管数字，我只是编造的)

我试过用这个但是没用:

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

有什么正确的想法吗？

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