Previous rows value based on date (Lag functionality from SQL in Power BI logic)

Hi Anonymous ,

You can try formula like below:

M_Pre = 
VAR pre_ =
    CALCULATE (
        MAX ( 'Table'[Date] ),
        FILTER ( ALL ( 'Table' ), 'Table'[Date] <= MAX ( 'Table'[Date] ) - 1 )
    )
RETURN
    CALCULATE (
        MAX ( 'Table'[Volumn] ),
        FILTER ( ALL ( 'Table' ), 'Table'[Date] = pre_ )
    )

If converted into a calculated column formula, you can use the top function to get the value of any of the first few lines (or summation). Specific reference to the following formula:

Column =
VAR pre_row =
    TOPN (
        1,
        FILTER (
            'Table',
            'Table'[Month] < EARLIER ( 'Table'[Month] )
                && 'Table'[Employee] = EARLIER ( 'Table'[Employee] )
        ),
        [Month], DESC
    )
VAR pre_val =
    MINX ( pre_row, [Sales] )
RETURN
    'Table'[Sales] + pre_val

If the problem is still not resolved, please provide detailed error information and let me know immediately. Looking forward to your reply.

Best Regards,
Henry

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