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STARTOFMONTH Function
Returns the first date of the month in the current context for the specified column of dates.
Note
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To understand more about how context affects the results of formulas, see Context in DAX Formulas. |
The dates argument can be any of the following:
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A reference to a date/time column.
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A table expression that returns a single column of date/time values.
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A Boolean expression that defines a single-column table of date/time values.
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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.
=STARTOFMONTH(DateTime[DateKey])
