Question

SELECT I.[Order Number], SUM(CAST([Ext Price] AS FLOAT)) AS Rev 
        FROM stg.Invoices I 
        where i.[order number] = '64100097'
        GROUP BY I.[Order Number]

给我：

Order Number    Rev
64100097    124079.33

当我尝试使用以下方式获得每行收入的百分比时：

SELECT StgID,
CAST((CAST([Ext Price] AS FLOAT)) / (NULLIF(Rev,0)) AS FLOAT)
FROM stg.Invoices I
JOIN (
        SELECT I.[Order Number], 
        SUM(CAST([Ext Price] AS FLOAT)) AS Rev 
        FROM stg.Invoices I 
        where i.[order number] = '64100097'
        GROUP BY I.[Order Number]
) as TotRev on I.[Order Number] = TotRev.[Order Number]

我明白了：

StgID   RevPct
7006418 0.202934687026437
7006427 0.000460995397057673
7006417 0.0274442971282969
7006426 0.000415379418957211
7006422 0.0312703171430729
7006425 0.000609287622684616
7006424 0.0161187201768417
7006420 0.197365669205338
7006419 0.226870986489047
7006428 0.000134752500678397
7006421 0.10299056256993
7006423 0.193384345321658

总计最多：.08333333333

这不应该加1吗？

我不明白为什么我不能让每一行加起来达到100％的总百分比。

以下证明所有这些都应该加起来总数：

select stgid, [ext price]
from stg.Invoices
where [order number] = '64100097'


stgid   ext price
7006420 24489
7006418 25180
7006427 57.2
7006417 3405.27
7006426 51.54
7006421 12779
7006423 23995
7006422 3880
7006425 75.6
7006424 2000
7006419 28150
7006428 16.72

Answer 1

使用窗口功能：

SELECT I.[Order Number], SUM(CAST([Ext Price] AS FLOAT)) AS Rev ,
       SUM(CAST([Ext Price] AS FLOAT)) / NULLIF(SUM(SUM(CAST([Ext Price] AS FLOAT))) OVER (), 0) as p_rev
FROM stg.Invoices I 
WHERE i.[order number] = '64100097'
GROUP BY I.[Order Number];

查找每行的总数百分比

1 个答案: