Need guidance on unpivot columns

[JustNewbie]

Hi,

I have 2 table below. Currently One to many relationship. Reference number is unique in table 2.

But now if i unpivot column Approver1 & Approver2, my reference number in table 2 become duplicate not unique...and it will affect the one to many relationship. how do i solve this? 

(Reason why i want to unpivot the column Approver1 & Approver2 is to count who had approved the most payment reference.)

thanks.

[JustNewbie]

Hi,

Anyone can help?

[JustNewbie]

Anyone can give me some advice?

My target is to calculate which approvers had approved how many documents here. Should i unpivot the columns or there's other options? I also need to calculate dates from 2 diff tables.

[johnt75]

You could set it up as a many-to-many relationship but make it single directional, so that Table 2 filters Table 1.

[JustNewbie]

@johnt75 hi, john, i make it single directional, but it give me another problem. I wan to calculate the datediff between the 2 tables, after i unpivot the column which become many to many relationship, the datediff in Dax doesn't work anymore.

Should create a separate table to unpivot the columns? Any ideas?