How to create Dax logic for this Month and Previous Month

Question

Hi PBI Experts.&nbsp;Here is my question for you in&nbsp;dax&nbsp;,&nbsp;I have total sales for 4 months but data is loading for 2 months instead of 4 months.In this case i need to create logic using Dax function. where data is not loaded for that month,then i need to get data for the previous month.If Previous month data also not loaded then get data for the before last month.Here are the screenshots for example.&nbsp;&nbsp;will give kudosAdvance Thanks,Thanks&nbsp;Chaitanya&nbsp;&nbsp;

anonymous · Accepted Answer

Hi&nbsp;Chaitanya122&nbsp;,
I created a sample pbix file(see attachment) for you, please check whether that is what you want. You can create a measure&nbsp;as below:
Measure = 
VAR _selyear =
    SELECTEDVALUE ( 'Date'[Year] )
VAR _selmonth =
    SELECTEDVALUE ( 'Date'[Month] )
VAR _selym =
    SELECTEDVALUE ( 'Date'[YearMonth] )
VAR _amount =
    CALCULATE (
        SUM ( 'Table'[Amount] ),
        FILTER (
            'Table',
            YEAR ( 'Table'[Date] ) = _selyear
                &amp;&amp; FORMAT ( 'Table'[Date], "mmmm" ) = _selmonth
        )
    )
VAR _predate =
    CALCULATE (
        MAX ( 'Table'[Date] ),
        FILTER (
            ALLSELECTED ( 'Table' ),
            VALUE ( YEAR ( 'Table'[Date] ) &amp; FORMAT ( 'Table'[Date], "mm" ) )
                &lt; VALUE ( _selym )
        )
    )
VAR _preamount =
    CALCULATE (
        SUM ( 'Table'[Amount] ),
        FILTER (
            ALLSELECTED ( 'Table' ),
            YEAR ( 'Table'[Date] ) = YEAR ( _predate )
                &amp;&amp; MONTH ( 'Table'[Date] ) = MONTH ( _predate )
        ),
        ALL ( 'Date' )
    )
RETURN
    IF ( ISBLANK ( _amount ), _preamount, _amount )

In addition, you can refer the following blog to get it.
Power BI DAX Getting the Value of Previous Non-NULL Row
If the above one can't help you get the desired result, please provide some sample data in your tables (exclude sensitive data) with Text format and your expected result with backend logic and special examples. It is better if you can share a simplified pbix file. Thank you.
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Best Regards

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