Help! Previous Month Function is not working!!

[jaynesa]

I'm trying to pull in the previous month sales, but I'm getting a blank.  It's working perfectly fine for the current month actuals.  I'm referring to dates and it still isn't working!  I've been at this for hours searching through this community and youtube and nothing is working!  Please help!

[amitchandak]

@jaynesa , Please create a date table

MTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESMTD('Date'[Date]))
last month Sales = CALCULATE(SUM(Sales[Sales Amount]),previousmonth('Date'[Date]))
last MTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(dateadd('Date'[Date],-1,MONTH)))
last MTD (complete) Sales =  CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(ENDOFMONTH(dateadd('Date'[Date],-1,MONTH))))

To get the best of the time intelligence function. Make sure you have a date calendar and it has been marked as the date in model view. Also, join it with the date column of your fact/s. Refer :
https://radacad.com/creating-calendar-table-in-power-bi-using-dax-functions
https://www.archerpoint.com/blog/Posts/creating-date-table-power-bi
https://www.sqlbi.com/articles/creating-a-simple-date-table-in-dax/

See if my webinar on Time Intelligence can help: https://community.powerbi.com/t5/Webinars-and-Video-Gallery/PowerBI-Time-Intelligence-Calendar-WTD-Y...

https://community.powerbi.com/t5/Community-Blog/Decoding-Direct-Query-in-Power-BI-Part-1-Time-Intell...


Appreciate your Kudos.

[FarhanAhmed · Accepted solution]

You need to create Date Calendar and join it with your current table. Time Intelligence function only work with Date Table.

Even your MTD function will not work if you put Date Values in Table. Since you are showing Location thats why it is giving sum of location for that month. but if you put date column in Matrix/Table you will see that MTD will not work as expected.

[angelarojasmora]

I had the same issue. It was solved by marking my Calendar table as the date table: 

[jaynesa]

I have my date table connected to the table with my values.  Or did I do this incorrectly?

[ryan_mayu]

@jaynesa 

Maybe you can try

DAX

=CALCULATE(SUM(amount)), PREVIOUSMONTH('Time Map'[Date]))  

[FarhanAhmed]

You are pulling date from BPC table in your measure, you should be using date from "Time Map" table (if this is your date table)

[ryan_mayu]

@jaynesa 

Do you create a calendar table? You need to build the relatonship between your current table and calendar table

Please see the previousmonth function below.

PREVIOUSMONTH('DateTime'[DateKey])

https://docs.microsoft.com/en-us/dax/previousmonth-function-dax