Question

如何转换此结果：

week,day,hour,branch,sales
1,1,1,a,50
1,1,1,b,50
1,1,2,a,25
1,1,2,b,75

进入这个：

week,day,hour,branch,sales,percentage
1,1,1,a,50,50%
1,1,1,b,50,50%
1,1,2,a,25,25%
1,1,2,b,75,75%

请注意，百分比按每小时分组。换句话说，它不是所有销售的百分比，而只是每小时内的销售额。我尝试了以下查询，但这给了我所有销售的百分比：

SELECT week,day,hour,branch,sales,
(sales/(SELECT SUM(sales) FROM test))*100 AS Percentage
FROM test
GROUP BY week,day,hour,branch

Answer 1

使用相关子查询：

SELECT week, day, hour, branch, sales,
       (sales/(SELECT SUM(sales)
               FROM test t2
               WHERE t2.hour = t.hour and t2.week = t.week and t2.day = t.day
              )
       ) * 100 AS Percentage
FROM test t
GROUP BY week, day, hour, branch;

MySQL查询计算每个组内的百分比

1 个答案: