Calculating Same Period Last Year

[nleuck]

Hello All,

I could use some help calculating Sales from last year during the current time frame (Jan 01 - Jan 12). SAMEPERIODLASTYEAR doesn't work the way I would think it should. Below are two links that I've tried and I'm still not getting the results I would expect.

https://radacad.com/same-period-last-year-to-date-dax-calculation-in-power-bi

https://community.powerbi.com/t5/Desktop/Function-SAMEPERIODLASTYEAR-expects-a-contiguous-selection-...

Thanks! 

[nleuck · Accepted solution]

So I found a solution that worked for me. I had to create to create a column in my Date table that is a True/False if the current year dates are the same period as last year. I then add that column as a filter on a visual and then my Same Period LY Sales measure shows the correct amount.

Same Period LY Sales = CALCULATE(SUM(SalesTable[TotalSales]), SAMEPERIODLASTYEAR(DateTable[Date]))

IsSamePeriodLY = IF(DateTable[Date] >= DATE(YEAR(TODAY()), 1, 1), 1 &&

                                                                         IF(DateTable[Date] <= TODAY()-1, 1, 0))

[parry2k]

@nleuck do you have a date dimensions in your model which is super important? Provide more details when you say it is not working.

Read this post to get your answer quickly.

https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

[nleuck]

@parry2k 

Yes I have my own date table.