OPENINGBALANCEMONTH Function

Evaluates the expression at the first date of the month in the current context.

Syntax
OPENINGBALANCEMONTH(<expression>,<dates>[,<filter>])
Parameters

Parameter

Definition

expression

An expression that returns a scalar value.

dates

A column that contains dates.

filter

(optional) An expression that specifies a filter to apply to the current context.
Return Value

A scalar value that represents the expression evaluated at the first date of the month in the current context.
Remarks
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.
Note Note

The filter expression has restrictions 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.

Example

The following sample formula creates a measure that calculates the 'Month Start Inventory Value' of the product inventory.

To see how this works, create a PivotTable and add the fields, CalendarYear, MonthNumberOfYear and DayNumberOfMonth, to the Row Labels area of the PivotTable. Then add a measure, named Month Start Inventory Value, using the formula defined in the code section, to the Values area of the PivotTable.

Code

=OPENINGBALANCEMONTH(SUMX(ProductInventory,ProductInventory[UnitCost]*ProductInventory[UnitsBalance]),DateTime[DateKey])
See Also

Reference

OPENINGBALANCEYEAR Function
OPENINGBALANCEQUARTER Function
CLOSINGBALANCEMONTH Function

Other Resources

Time Intelligence Functions (DAX)
Get Sample Data
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