Topic Status: Some information in this topic is preview and subject to change in future releases. Preview information describes new features or changes to existing features in Microsoft SQL Server 2016 Community Technology Preview 2 (CTP2).
Returns the first date of the month in the current context for the specified column of dates.
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.
This DAX function is not supported for use in DirectQuery mode. For more information about limitations in DirectQuery models, see http://go.microsoft.com/fwlink/?LinkId=219172.
The following sample formula creates a measure that returns the start of the month, for the current context.
To see how this works, create a PivotTable and add the fields CalendarYear and MonthNumberOfYear to the Row Labels area of the PivotTable. Then add a measure, named StartOfMonth, using the formula defined in the code section, to the Values area of the PivotTable.