Forum Discussion
Measure to get previous value with same attributes
I have a table with multiple attribute/category columns (call them A1, A2, ...), a date column and a value column.
I've been trying for too long to get a measure that gives me the value for the previously available date, given that all attribute are the same.
Example:
date A1 A2 .... value new_measure
06/30/2023 a c 1 BLANK
06/30/2023 b d 2 BLANK
07/03/2023 a c 3 1
07/04/2023 a c 4 3
07/03/2023 a d 5 BLANK
07/04/2023 a d 6 5
How can I do it?
6 Replies
gchn try to use earlier() DAX function
EARLIER(<column>, <number>)Just the EARLIER function doesnt' work, can you be more specific?
Hi gchn
Try using:-
new_measure =
VAR CurrentDate = MAX('YourTable'[date])
VAR PrevDate =
CALCULATE(
MAX('YourTable'[date]),
FILTER(
ALL('YourTable'),
'YourTable'[date] < CurrentDate &&
'YourTable'[A1] = EARLIER('YourTable'[A1]) &&
'YourTable'[A2] = EARLIER('YourTable'[A2]) &&
...
)
)
RETURN
IF(ISBLANK(PrevDate), BLANK(),
CALCULATE(
MAX('YourTable'[value]),
FILTER(
ALL('YourTable'),
'YourTable'[date] = PrevDate &&
'YourTable'[A1] = EARLIER('YourTable'[A1]) &&
'YourTable'[A2] = EARLIER('YourTable'[A2]) &&
...
)
)
)
Hope this will help.Hi gchn ,
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Regards,
Xiaoxin Sheng
Nothing of the above worked. I ended up using an actually useful tool (a Python script) to do that before feeding it into Power BI. I guess it's my fault for thinking a Microsoft product would work.
HI gchn,
Here is the dax measure formula and sample file about get the previous value based on use current date and multiple attribute field values:
formula = VAR currDate = MAX ( 'Table'[date] ) VAR prevDate = CALCULATE ( MAX ( 'Table'[date] ), FILTER ( ALLSELECTED ( 'Table' ), [date] < currDate ), VALUES ( 'Table'[A1] ), VALUES ( 'Table'[A2] ) ) RETURN IF ( prevDate <> BLANK (), CALCULATE ( SUM ( 'Table'[value] ), FILTER ( ALLSELECTED ( 'Table' ), [date] = prevDate ), VALUES ( 'Table'[A1] ), VALUES ( 'Table'[A2] ) ) )
Regards,Xiaoxin Sheng
