How to get the unique customer name within selected period range based on min Date

[Anonymous]

Hi all,

I would like to have, in a table, the customer ID, the customer name and the order date like the one below:

Customer ID	Customer Name	Order Date
1	Cust A	01/01/2023
2	Cust B	01/02/2023
3	Cust C	01/03/2023

My challenge is that the user will have the possibility to define a start date and an end date via a slicer and we have multiple order dates per period. So, let's take the scenario that the user selects the period from Jan 23' - Mar 23, the table will show something like that:

Customer ID	Customer Name	Order Date
1	Cust A	01/01/2023
2	Cust B	01/02/2023
2	Cust B	15/02/2023
3	Cust C	01/03/2023
3	Cust C	15/03/2023

Any idea how can I show only the unique Customers, based on the 1st Order Date that happened per ID (like min(Order Date)), so the table will look like as the 1st table (above)?

Many thanks!

[Anonymous]

Hi @Anonymous,

Please let me know if you have any further ideas about my question.

FYI, I need also to take into consideration the date slicer selection in my flag's DAX formula (which I use the column [Date] from 'Date' table. So, I need to add in the existing DAX the logic:

'Table'[Order Date] >= minx(allselected(date),'date'[date])

Many thanks!

[Anonymous]

Hi  @Anonymous ,

Here are the steps you can follow：

1. Create measure.

Flag =
IF(
    MAX('Table'[Order Date]) = MINX(FILTER(ALL('Table'),'Table'[Customer ID]=MAX('Table'[Customer ID])&&'Table'[Customer Name]=MAX('Table'[Customer Name])),[Order Date]),1,0)

2. Place [Flag]in Filters, set is=1, apply filter.

3. Result:

Best Regards,

Liu Yang

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

[Anonymous]

Hi @Anonymous 

Thanks for your response. The solution works except one important case:

If we have the same ID but a different Customer Name (which is normal since the selection period reflects many years), the table shows both rows. My expectation is to have a table with unique IDs, without taking account any differences in the Customer Names. Any solution about this issue?

Thanks again!

[Anonymous]

Hello everyone,

Any update you may have would be greatly appreciated, since I'm working on it to a very strict deadline.

Also, in case it helps, I have tried to use LASTNONBLANK or LASTNONBLANKVALUE functions with no success so far, so please let me know if you have a better solution.

Thanks again.