Calculate measure based on if statement

[Anonymous]

Hello!

This year I started with PowerBI, i have about 2 years experience with QlikSense/View. So most of the challenges I could solve with my experience with Qlik. But now I just cant get it to work like I want, hope you can help!

I want to make the following measure: sum([Amount]) + sum(previousmonth([Amount]) from the FACT table. But when its january 2018 i dont want to sum the previous month 2017 december. So sum only if the previous month is in the current year.... In Qlik i would have done something like...if year from fact table matches the calendar year then sum amount + previousmonth amount.

how do i achieve this in PowerBI?

[v-yulgu-msft · Accepted solution]

Hi @Anonymous,

Please refer to this thread to use PREVIOUSMONTH function properly.

In your scenario, the IF statement could be similar to:

Measure =
IF (
    MONTH ( SELECTEDVALUE ( 'DateTime'[DateKey] ) ) <> 1,
    SUM ( Fact[Amount] )
        + CALCULATE ( SUM ( Fact[Amount] ), PREVIOUSMONTH ( 'DateTime'[DateKey] ) )
)

For more advice, please provide sample data and desired result as suggested in this article.

Best regards,

Yuliana Gu

[Anonymous]

@v-yulgu-msft exactly what i needed!

Had to alter it a bit but this works, thank you!

Previous = SUM ( 'Fact table'[Amount] ) + IF (
    MONTH ( SELECTEDVALUE ( 'Calender'[Jaar_maand] ) ) <> 1, CALCULATE ( SUM ( 'Fact table'[Amount] ), PREVIOUSMONTH ( 'Calender'[Datum] ) )