SAMEPERIODLASTYEAR function (DAX)
Returns a table that contains a column of dates shifted one year back in time from the dates in the specified dates column, in the current context.
|dates||A column containing dates.|
Property Value/Return value
A single-column table of date values.
The dates argument can be any of the following:
A reference to a date/time column,
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.
Constraints on Boolean expressions are described in the topic, CALCULATE function (DAX).
The dates returned are the same as the dates returned by this equivalent formula:
DATEADD(dates, -1, year)
This DAX function is not supported for use in DirectQuery mode. For more information about limitations in DirectQuery models, see https://go.microsoft.com/fwlink/?LinkId=219172.
The following sample formula creates a measure that calculates the previous year sales of the Reseller sales.
To see how this works, create a PivotTable and add the fields, CalendarYear to the Row Labels area of the PivotTable. Then add a measure, named Previous Year Sales, using the formula defined in the code section, to the Values area of the PivotTable.