Add Previous Period (year) based on a custom date range selection

[ATO23]

Good morning! 

We are dealing with a problem when we try to add the preivous period sales (year) when we select a date from a date range.

So, the first step was add a table to identify de date ranges and make the relation with our calendar table.

Period = 
    VAR _DateTable = CALENDAR(DATE(2020,1,1),TODAY())
    VAR _Today = ADDCOLUMNS(FILTER(DateTable,DATEDIFF(TODAY(),[Date],DAY) = 0),"RelativeDate","Today","Sort",1)
    VAR Yesterday = ADDCOLUMNS(FILTER(DateTable,DATEDIFF(TODAY(),[Date],DAY) = -1),"RelativeDate","Yesterday","Sort",2)
    VAR LastWeekday = ADDCOLUMNS(FILTER(DateTable,DATEDIFF(IF(WEEKDAY(TODAY(),2)=1,TODAY()-3,TODAY()-1),[Date],DAY) = 0),"RelativeDate","LastWeekday","Sort",3)
    VAR ThisWeek = ADDCOLUMNS(FILTER(DateTable,DATEDIFF(TODAY(),[Date]-1,WEEK) = 0),"RelativeDate","ThisWeek","Sort",4)
    VAR LastWeek = ADDCOLUMNS(FILTER(DateTable,DATEDIFF(TODAY(),[Date]-1,WEEK) = -1),"RelativeDate","LastWeek","Sort",5)
    VAR ThisMonth = ADDCOLUMNS(FILTER(DateTable,DATEDIFF(TODAY(),[Date],MONTH) = 0),"RelativeDate","ThisMonth","Sort",6)
    VAR LastMonth = ADDCOLUMNS(FILTER(DateTable,DATEDIFF(TODAY(),[Date],MONTH) = -1),"RelativeDate","LastMonth","Sort",7)
    VAR ThisYear = ADDCOLUMNS(FILTER(DateTable,DATEDIFF(TODAY(),[Date],YEAR) = 0),"RelativeDate","ThisYear","Sort",8)
    VAR LastYear = ADDCOLUMNS(FILTER(DateTable,DATEDIFF(TODAY(),[Date],YEAR) = -1),"RelativeDate","LastYear","Sort",9)
    Return
        UNION(_Today,Yesterday,LastWeekday,ThisWeek,LastWeek,ThisMonth,LastMonth,ThisYear,LastYear)

When we create a metric for sales, everything is working fine. However when we create a previous period metric and add to visual, it goes blank when you select a period.

Any help on this?

Kind regards

ATO

[v-yangliu-msft · Accepted solution]

Hi  @ATO23 ,

I created some data:

Here are the steps you can follow：

1. Create measure.

Flag =
var _select=SELECTEDVALUE('Period'[RelativeDate])
var _date=CALCULATE(MAX('Period'[Date]),FILTER(ALL(Period),'Period'[RelativeDate]=_select))
return
IF(
AND( MAX('Table'[Year])=YEAR(_date),MAX('Table'[Month])=MONTH(_date))||AND(MAX('Table'[Year])=YEAR(_date)-1,MAX('Table'[Month])=MONTH(_date))
    ,1,0)

Measure =
SUMX(
   FILTER( ALLSELECTED('Table'),'Table'[Year]=MAX('Table'[Year])&&'Table'[Month]=MAX('Table'[Month])),[amount])

2. Place [Flag]in Filters, set is=1, apply filter.

3. Result:

Best Regards,

Liu Yang

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

[ATO23]

Hello, thanks for your answer. We have already the metric create for the previous period, the same way you wrote down, the problem is that metric doesn't work with a date range selector. See example:

I have selected i want to see the sales for this month (may 2022) and i want to compare it with the sales of May 2021. and the metric is not working in with the selection date range

[amitchandak]

@ATO23 , Not very clear. But you can get previous year using Date table like

Year behind Sales = CALCULATE(SUM(Sales[Sales Amount]),dateadd('Date'[Date],-1,Year))
Year behind Sales = CALCULATE(SUM(Sales[Sales Amount]),SAMEPERIODLASTYEAR('Date'[Date]))

week Year behind Sales = CALCULATE(SUM(Sales[Sales Amount]),dateadd('Date'[Date],-364,DAY))