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GJUDGE's avatar
GJUDGE
Icon for Helper II rankHelper II
4 years ago
Solved

Comparing Periods in the same table

I am sure this is a fairly straightforward problem for most but I'm fairly new to Power BI and any help is appreciated!   I have a single table that compiles monthly reporting information. I want t...
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  • v-xiaotang's avatar
    v-xiaotang
    4 years ago

    Hi GJUDGE 

    You can use Edate() function to get last period, for example, 

    Last Period = 
    var _currentDate=MAX('table'[date])
    var _lastDate=EDATE(_currentDate,-1)
return 
    CALCULATE(SUM('table'[Output]),'table'[date]=_lastDate)

    Kindly note:  Edate() function has some limitations,

    If you can't use Edate() on some occasions, you can try this measure,

    Last Period = 
    var _maxDate=MAX('table'[date])
    var _lastDate=DATE(YEAR(_maxDate),MONTH(_maxDate)-1,1)
return 
    CALCULATE(SUM('table'[Output]),'table'[date]=_lastDate)

     

     

    Best Regards,

    Community Support Team _Tang

    If this post helps, please consider Accept it as the solution to help the other members find it more quickly.

vanessafvg's avatar
vanessafvg
Icon for Community Champion rankCommunity Champion
4 years ago

so you saying you want to sum this months and sum last month and then work out the difference as a change %?

  • GJUDGE's avatar
    GJUDGE
    Icon for Helper II rankHelper II
    4 years ago

    Not even a % change, just the difference, but my main worry is not needing to update the measure each month every time a new months worth of data is added. Any tips are welcomed!