计算每月变化百分比

时间:2018-02-23 05:38:18

标签: powerbi

我试图计算PowerBI中每月的净收入变化百分比。

遵循Time Patterns"期间比较模式",其中说明:

  

例如,月度计算(MOM)将当前选择与一个月前的相同选择进行比较。

This Reddit Post,其中说明:

  

扩展:CALCULATE(SUM(YourValueCol),PREVIOUSMONTH(YourDateCol))

我觉得我跟着这些。见下文:

所选模型尺寸:

  • 日期模型:Month(一年中的月份数字)
  • NR :(计算:SUM(Orders[Unit Net Revenue USD])

给出:

Month | NR
----------------------
1       $5       
2       $6
3       $7

上个月的选定模型尺寸:

  • 日期模型:Previous Month(一年中的月份数字)
  • NR :(计算:SUM(Orders[Unit Net Revenue USD])

给出:

Previous Month | NR
----------------------
1                $6       
2                $7
3                $8
---------------------
Total:            $21

因此,我尝试将当前月NR与上个月NR进行比较,最终获得%变化:

This Month NR = CALCULATE(SUM(Orders[Unit Net Revenue USD]), 'Date - Period'[Month]) // Month = 2 (February)

Prior Month NR = CALCULATE(SUM(Orders[Unit Net Revenue USD]), 'Date - Period'[PreviousMonth]) // Month = 1 (January)

% Change = DIVIDE([This Month NR], [Prior Month NR], BLANK())-1

// Also tried:

% Change = (([This Month NR] - [Prior Month NR])/ [Prior Month NR])

对于This Month NR,它会向我提供每行NR的总和,而对于Prior Month NR,它会给我预期的值。为什么每月给出每年的总金额?如,

Year |  Month  | This Month NR               | Prev Month NR
------------------------------------------------------------------
2015     1       $18 ($5 + $6 + $7 for 2015)  $6               
2015     2       $18                          $7
2015     3       $18                          $8 
------------------------------------------------------------------ 

预期:

Year |  Month  | This Month NR               | Prev Month NR
------------------------------------------------------------------
2015     1       $5                          $4               
2015     2       $6                          $5
2015     3       $7                          $6 
------------------------------------------------------------------ 

如果我执行以下计算字段

NR Measure = SUM('Retailer Sales'[Net Revenue])
This Month NR = CALCULATE([NR Measure], 'Date'[Month Num])
Prior Month NR = CALCULATE([NR Measure], 'Date'[Previous Month])

然后按dimension Year&过滤dimension Month Num& This Month NR& Prior Month NR我明白了:

Year  | Month   | This Month NR | Prev Month NR
------------------------------------------------------------------
2015     1       $6              $6               
2015     2       $7              $7
2015     3       $8              $8 
------------------------------------------------------------------ 

预期(再次):

Year  | Month   | This Month NR | Prev Month NR
------------------------------------------------------------------
2015     1       $6              $5               
2015     2       $7              $6
2015     3       $8              $7 
------------------------------------------------------------------ 

上个月,如果我尝试Prior Month NR = CALCULATE([NR Measure], PREVIOUSMONTH('Retailer Sales'[Date])) - Prior Month NR对于相同的过滤器而言只是空白。

我在DAX中做错了什么?

enter image description here

0 个答案:

没有答案