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STARTOFYEAR Function

Returns the first date of the year in the current context for the specified column of dates.


STARTOFYEAR(<dates>)

Term

Definition

dates

A column that contains dates.

YearEndDate

(Optional) A year end date value.

A table containing a single column and single row with a date value.

Note Note

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:

  • 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.

Note Note

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 year, 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 StartOfYear, using the formula defined in the code section, to the Values area of the PivotTable.

=STARTOFYEAR(DateTime[DateKey])
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