Parallelperiod issue

[Anonymous]

Hi all! 

I'm trying to get the sales value of the previous previous month but i'm not been able to reach it using parallelperiod formula. 

(CALCULATE(Consolidado[TO]; PARALLELPERIOD(Consolidado[Fecha creacion];-2;MONTH)));0))

My "Fecha creación" table is:

SOP base	ID	Fecha creación
Actual	0	31/1/2015
SOP 01-Ene	2	31/1/2016
SOP 02-Feb	4	29/2/2016
SOP 03-Mar	6	31/3/2016
SOP 04-Abr	8	30/4/2016
SOP 05-May	10	31/5/2016
SOP 06-Jun	12	30/6/2016
SOP 07-Jul	14	31/7/2016
SOP 08-Aug	16	31/8/2016
SOP 09-Sep	18	30/9/2016
SOP 10-Oct	20	31/10/2016
SOP 11-Nov	22	30/11/2016
SOP 12-Dic	24	31/12/2016

Now we are working in March, so I must get January value. The weird thing is that if I want to get February value, it works fine using "-1".

Thanks for your help

[Anonymous]

The dates argument can be any of the following:

• A reference to a date/time column. Only in this case, a context transition applies because the <Dates> column reference is replaced by
  • CALCULATETABLE  ( DISTINCT  ( <Dates> ) )
• A table expression that returns a single column of date/time values.
• A Boolean expression that defines a single-column table of date/time values.

This function takes the current set of dates in the column specified by Dates, shifts the first date and the last date the specified number of intervals, and then returns all contiguous dates between the two shifted dates. If the interval is a partial range of month, quarter, or year then any partial months in the result are also filled out to complete the entire interval.

The result table includes only dates that exist in the dates column.

[Greg_Deckler]

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...

[amitchandak]

Create a date dimension and try trailing period

CALCULATE(Consolidado[TO]; dateadd(Date[Date];-2;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/