PREVIOUSMONTH in not working if Time select is Jan 2018

[prabhuss]

Hi All,

Wishing you happy new year. Starting this new year, we observed one of our 

dashboard is not working. This dashboard is suppored to compare between Current month Sales vs Previous Months Sales. As of Jan 2018, Current month is going to be Jan 2018 and Previous month is going to be Dec 2017.

we are using following formula to calculate previous month sales

PrevMonthSale = CALCULATE(SUM(CustomerInvoice[PayableAmount]),  PREVIOUSMONTH(CustomerInvoice[InvoiceDate])).

Any help to resolve this is very well appriciated as we are using this dashboard activily 

Regards,

Prabhu Srivastava

[Zubair_Muhammad]

@prabhuss

Try this one

PrevMonthSale =
CALCULATE (
    SUM ( CustomerInvoice[PayableAmount] ),
    DATEADD ( CustomerInvoice[InvoiceDate], -1, MONTH )
)

[prabhuss]

I had tried earlier, and did not work for me. Even , PrevMonth = CALCULATE(SUM(CustomerInvoice[PayableAmount]),  PARALLELPERIOD(CustomerInvoice[InvoiceDate],-1,MONTH)) did not work.

[Zubair_Muhammad]

@prabhuss

Your formula will also work fine. Just add a Calendar Table using CalendarAuto() function. Then create a relationship between CalendarTable and Invoice Date.

PrevMonthSale = CALCULATE(SUM(CustomerInvoice[PayableAmount]),  PREVIOUSMONTH(CustomerInvoice[InvoiceDate]))

[prabhuss]

CalendarAuto()  does not work for directquery. The trick i played that I  created SQL Table  called DateTable and

Then created a relationship between DateTable and Invoice Date.

[v-yuezhe-msft · Accepted solution]

@prabhuss,

Create the measure using one of the DAX below,  then use Year field and Month field of Datetable to create slicers.

PrevMonthSale = CALCULATE(SUM(CutsomerInvoice[PayableAmount]),  PREVIOUSMONTH(DateTable[Date]))

PrevMonthSale1 = 
CALCULATE (
    SUM ( CutsomerInvoice[PayableAmount] ),
    DATEADD ( DateTable[Date], -1, MONTH )
)

Regards,
Lydia