topic Re: Month Series in DAX Commands and Tips

Month Series

esam — Tue, 07 Feb 2023 14:40:59 GMT

Hi I have date table from 2023 to 2025 i want a column with month series where 36 being december 2025 and 1 being January 2023.

Re: Month Series

johnt75 — Tue, 07 Feb 2023 15:29:42 GMT

You could try a calculated column like

Month series = VAR ReferenceDate = 'Date'[Date] VAR PrevMonths = CALCULATETABLE ( VALUES ( 'Date'[Year month] ), REMOVEFILTERS ( 'Date' ), 'Date'[Date] < ReferenceDate ) RETURN COUNTROWS ( PrevMonths ) + 1

Re: Month Series

esam — Tue, 07 Feb 2023 15:38:49 GMT

Removefilter with comparison operator is not correct

Re: Month Series

johnt75 — Tue, 07 Feb 2023 15:43:35 GMT

I think maybe you've missed a close bracket, the REMOVEFILTERS and comparison are separate.

Re: Month Series

esam — Tue, 07 Feb 2023 15:49:47 GMT

the series generated by this 13,12,....1

Re: Month Series

johnt75 — Tue, 07 Feb 2023 16:02:01 GMT

OK, the below works for me

Month series = VAR ReferenceDate = 'Date'[Date] VAR PrevMonths = CALCULATETABLE ( DISTINCT ( 'Date'[Year month] ), REMOVEFILTERS ( 'Date' ), 'Date'[Date] <= ReferenceDate ) RETURN COUNTROWS ( PrevMonths )

Re: Month Series

FreemanZ — Tue, 07 Feb 2023 16:04:27 GMT

hi esam

try to add a column like:

Month Series =

DATEDIFF([Date], DATE(2023, 1, 1), MONTH)+1

Re: Month Series

esam — Tue, 07 Feb 2023 16:44:21 GMT

Hi FreemanZ

The solution you provided gave something similar but not accurate it is giving me result in negative

for jan 2023 it is one than feb 2023 0 and for december 2025 -33

Re: Month Series

smpa01 — Tue, 07 Feb 2023 21:28:55 GMT

esam not sure what your Date table looks like, I simply Assumed that you have only 1 column table as Calendar[Date]

Column = RANKX ( 'Calendar', DATE ( MONTH ( 'Calendar'[Date] ), YEAR ( 'Calendra'[Date] ), 1 ), , ASC, DENSE )

Re: Month Series

FreemanZ — Tue, 07 Feb 2023 21:04:26 GMT

hi esam

Aha, try like

Month Series =

DATEDIFF(DATE(2023, 1, 1), [Date], MONTH)+1

Re: Month Series

esam — Wed, 08 Feb 2023 09:24:46 GMT

Thank you for the solution FreemanZ can you explain a bit how this logic is working here !!

also how to get better with dax with real world scenarios

Re: Month Series

FreemanZ — Wed, 08 Feb 2023 13:41:30 GMT

hi esam

there is no secret, as long as you know the DATEDIFF function, which returns the number of periods between two dates. In this case, the period is MONTH.

In general, learning DAX by doing. Try to bring change and value to your daily work with DAX. If time allows, come back to the community and try to contribute.