Hi,
If you could please help me out with this error:
I have a sales table (with sales of several years back) and the corresponding calendar table. All I need is the count of sales for the previous month.
So,
I created a measure for the count of sales, like
Sales count = COUNTROWS( Sales( SalesID ) )
I created the measure for the sales count previous month, like the following:
Sales count PM = CALCULATE( [Sales count],
DATEADD( Calendar[Date], -1, MONTH ) )
The result gives me the count of all sales of the table, ignoring the month filter, which is obviously incorrect.
Therefore, I experimented with the following alternative formula:
CALCULATE( [Sales count],
YEAR( Calendar[Date] ) = YEAR( TODAY() ),
MONTH( Calendar[Date] ) = MONTH( TODAY() ) -1 )
This time, the result turns out almost correct. But, the month of January does not show any value, because the formula restricts the year to the current year. BTW, I had to filter the year, because otherwise the result sums up the previous month of this year and all previous years too (for example, if the current month is October, the formula would count sales of September this year, and also from previous years).
Also, I experimented with the PREVIOUSMONTH function, which always returns a blank result.
Am I doing something wrong with the Dateadd function?
Thank you and regards.
