Previous Month goes blank on some Month

[bimagty]

Hello,

I have problem with previous month dax. I want to show last month sales revenue based on the slicer, but when I select year of 2022 and month in February, this 'last month' card should display the sum of revenue in January but it shows ((blank)).

I tried to change the year to 2021 and it worked fine.

Below the captures:

I already have 2 tables, 1 table is for data and another 1 for calendar, below are my codes:

last month = CALCULATE (
    SUM('190222'[daily_revenue]),
    PREVIOUSMONTH ( 'Calendar'[Date].[Date] ) )

And this is the table relationship:

 This is the result when I tried to change the year to 2021:

Please help if there is something that I skipped to make it error. Thanks in advance!

[Greg_Deckler · Accepted solution]

@bimagty Well, make sure you have a separate date table and that it is marked as a date table. Also, you don't need the .[Date] portion. Alternatively, just say no to DAX time "intelligence" functions.

You may find this helpful - https://community.powerbi.com/t5/Community-Blog/To-bleep-With-Time-Intelligence/ba-p/1260000

Also, see if my Time Intelligence the Hard Way provides a different way of accomplishing what you are going for.

https://community.powerbi.com/t5/Quick-Measures-Gallery/Time-Intelligence-quot-The-Hard-Way-quot-TIT...

[bimagty]

Thank you Greg, it is solved.

I marked the table which contains date as date table, and the result is ok now.