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I have a table with sales and dates which are data type text.
What I am trying to work out is the variance from the retail sales data from the previous year.
I have a DAX formula which nearly calculates it
LastYearRetailSales =
var previous = [LastYear-Week]
var saleonpre = CALCULATE(SUM(MK_PAPA_CREDIT_PENETRATION_REPORTING_SERIES[Retail Sales]),ALL(MK_PAPA_CREDIT_PENETRATION_REPORTING_SERIES),MK_PAPA_CREDIT_PENETRATION_REPORTING_SERIES[Year-Week] = previous)
return
IF(ISBLANK(saleonpre),0,saleonpre)
The problem is LastYearRetailSales are vastly overstated. What am I doing wrong?
I basically want to know the variance between the two lines when I have Year as a Legend
HI @Anonymous
What happens when you try
LastYearRetailSales = var previous = [LastYear-Week] var saleonpre = CALCULATE(SUM(MK_PAPA_CREDIT_PENETRATION_REPORTING_SERIES[Retail Sales]),ALLSELECTED(MK_PAPA_CREDIT_PENETRATION_REPORTING_SERIES),MK_PAPA_CREDIT_PENETRATION_REPORTING_SERIES[Year-Week] = previous) return IF(ISBLANK(saleonpre),0,saleonpre)
HI @Anonymous
You must have a filter somewhere that we can't see in your existing information
What happens when you add the following measure to your model.
Oh and are the [Year-Week] and [LastYear-Week] calculated measures? or are they text fields?
LastYearRetailSales TEST = var previous = [Year-Week] var saleonpre = CALCULATE(SUM(MK_PAPA_CREDIT_PENETRATION_REPORTING_SERIES[Retail Sales]),ALL(MK_PAPA_CREDIT_PENETRATION_REPORTING_SERIES),MK_PAPA_CREDIT_PENETRATION_REPORTING_SERIES[Year-Week] = previous) return IF(ISBLANK(saleonpre),0,saleonpre)
[Year-Week] and [LastYear- Week] are columns not measures.
[LastYearRetailSales] is also a column
Year-Week = CONCATENATE(CONCATENATE([Year],"-"),[WeekNum])
WeekNum = FORMAT([Week], "00")
LastYear-Week = CONCATENATE(CONCATENATE([PreviousYear],"-"),FORMAT([Week], "00"))
PreviousYear = [Year] -1
[Year] and [Week] are both whole numbers datatypes.
If I add the measure to my model [LastYearRetailSales TEST] I get the error
The value for 'Year-Week' cannot be determined. Either 'Year-Week' doesn't exist, or there is no current row for a column named 'Year-Week'.
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