Evaluates the specified expression for the date corresponding to the end of the previous month after applying specified filters.
The expression to be evaluated.
The name of a column containing dates or a one column table containing dates.
A boolean (True/False) expression or a table expression that defines a filter.
A scalar value that represents the expression evaluated at the first date of the month in the current context.
The dates argument can be any of the following:
- A reference to a date/time column. Only in this case a context transition applies because the column reference is replaced by
- 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.
The result table includes only a date that exists in the dates column.
OPENINGBALANCEMONTH ( <Expression>, <Dates> [, <Filter>] )
CALCULATE ( <Expression>, PREVIOUSDAY ( STARTOFMONTH ( <Dates> ) ) [, <Filter>] )
Learn more about OPENINGBALANCEMONTH in the following articles:
Semi-Additive Measures in DAX
Values such as inventory and balance account, usually calculated from a snapshot table, require the use of semi-additive measures. In Multidimensional you have specific aggregation types, like LastChild and LastNonEmpty. In PowerPivot and Tabular you use DAX, which is flexible enough to implement any calculation, as described in this article. » Read more
Other related functions are:
Contributors: Alberto Ferrari, Marco Russo
MSDN documentation: https://docs.microsoft.com/en-us/dax/openingbalancemonth-function-dax