OPENINGBALANCEMONTH

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

Syntax

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

Parameters

Term 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

  • 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.

  • The filter expression has restrictions described in the topic, CALCULATE function.

  • 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 calculates the 'Month Start Inventory Value' of the product inventory.

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

See also

OPENINGBALANCEYEAR function
OPENINGBALANCEQUARTER function
Time intelligence functions
CLOSINGBALANCEMONTH function