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STARTOFMONTH

  • Article

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

Syntax

STARTOFMONTH(<dates>)

Parameters

Term Definition
dates A column that contains dates.

Return value

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

Remarks

  • 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.

  • This function is not supported for use in DirectQuery mode when used in calculated columns or row-level security (RLS) rules.

Example

The following sample formula creates a measure that returns the start of the month, for the current context.

= STARTOFMONTH(DateTime[DateKey])

See also

Date and time functions
Time intelligence functions
STARTOFYEAR
STARTOFQUARTER