Problem with formula

[AlexisPREVOT]

Hi,

I am trying to determine my number of orders compared to a previous period.
Since my date table could not be clean, I proceeded in two stages: the first by creating a column allowing me to find the dates of my previous period :

Commande N-1 = DATEADD('Marketing COMMANDE'[DATE_COMMANDE].[Date],-1,YEAR)

And in the second step a measure allowing me to count my number of orders :

Nombre de commandes N-1 = CALCULATE(DISTINCTCOUNT('Marketing COMMANDE'[REFERENCE_COMMANDE]),FILTER(ALL('Marketing COMMANDE'[DATE_COMMANDE]),CONTAINS(VALUES('Marketing COMMANDE'[Commande N-1]),'Marketing COMMANDE'[Commande N-1],'Marketing COMMANDE'[DATE_COMMANDE])))

My problem is that it gives me an empty result.

Does anyone have an idea where the problem could come from?

I did exactly the same process on another table that has the same architecture and it didn't cause any problems.

Thank you by advance.

Alexis

[AlexisPREVOT]

Hi @v-chenwuz-msft @amitchandak ,

Thank you for your answers. During my long weekend I studied the date tables more seriously and I was able to put them into practice. This actually solved my problem.

Thanks to you two.

[amitchandak · Accepted solution]

@AlexisPREVOT , You should always use date table for time intelligence function

CALCULATE(DISTINCTCOUNT('Marketing COMMANDE'[REFERENCE_COMMANDE]), dateadd('Date'[Date],-1, Year))

Power BI — Year on Year with or Without Time Intelligence
https://medium.com/@amitchandak.1978/power-bi-ytd-questions-time-intelligence-1-5-e3174b39f38a
https://www.youtube.com/watch?v=km41KfM_0uA

Time Intelligence, DATESMTD, DATESQTD, DATESYTD, Week On Week, Week Till Date, Custom Period on Period,
Custom Period till date: https://youtu.be/aU2aKbnHuWs

[AlexisPREVOT]

Thank you @amitchandak for your response.

I'm going to try this formula by creating a date table but I must be extremely useless because even if I manage to create this table without any problems, I'm completely lost for its use...

[v-chenwuz-msft]

Hi  @AlexisPREVOT , 

Or you can calculate distinctcount without create a date table with your date column 'Marketing COMMANDE'[DATE_COMMANDE], but all() must be add if no date table.

Some measures like this.

Measure =
CALCULATE (
DISTINCTCOUNT ( 'Marketing COMMANDE'[REFERENCE_COMMANDE] ),
ALL ( 'Table' ),
DATEADD ( 'Marketing COMMANDE'[REFERENCE_COMMANDE], -1, YEAR )
)

Actually, the date table  @amitchandak  mentioned is used to filter the date column [DATE_COMMANDE]. Which has one to many relationship to your date column  [DATE_COMMANDE].

Best Regards

Community Support Team _ chenwu zhu

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.