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Hello everyone,
I am quite new to DAX and need to obtain a calculated column (named difference) based on the following data:
Date Value Difference
25/6/2011 21.7 0
26/6/2011 21.7 0
27/6/2011 22.7 1
28/6/2011 23.7 1
29/6/2011 24.7 1
30/6/2011 25.7 1
1/11/2011 1 1
2/11/2011 2 1
3/11/2011 2.7 0.7
The first day of a month should be always 1 in the column difference. Is there a way to obtain this as a calculated column with dax (or either power query?) Thanks in advance!
Solved! Go to Solution.
Try this code for a new calculated column:
Difference =
VAR _date = CALCULATE(MAX('Table'[Date]), FILTER('Table', 'Table'[Date] < EARLIER('Table'[Date])))
VAR _lastValue = CALCULATE(MAX('Table'[Value]), FILTER('Table', 'Table'[Date] = _date))
RETURN
IF(
_lastValue = BLANK(), 0,
IF(DAY('Table'[Date]) = 1, 1, 'Table'[Value] - _lastValue)
)
Try this code for a new calculated column:
Difference =
VAR _date = CALCULATE(MAX('Table'[Date]), FILTER('Table', 'Table'[Date] < EARLIER('Table'[Date])))
VAR _lastValue = CALCULATE(MAX('Table'[Value]), FILTER('Table', 'Table'[Date] = _date))
RETURN
IF(
_lastValue = BLANK(), 0,
IF(DAY('Table'[Date]) = 1, 1, 'Table'[Value] - _lastValue)
)
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