topic Re: loop through table to replace certain values? for each loop? not sure how to approach issue in DAX Commands and Tips

loop through table to replace certain values? for each loop? not sure how to approach issue

test2sa — Thu, 20 Jun 2024 15:34:43 GMT

Not sure how to approach this in PowerBI. If this were a normal imperative programming language, I would just write a for-each loop.

I have an excel sheet of data in a Power BI report.

Quote Number Winner Shop External Shop

145 Y ABC

145 N TES

145 N CAR

647 N CAR

647 Y TES

647 N ABC

785 Y ABC

546 N TES FEF

There's a bunch of quote offers from different shops and sometimes even an external shop. Only one shop can win each quote.

I was thinking that I could create a new column in PowerBI datasource called "Winner Name".

Then what I would like to do is loop thru each quote to assign the winner instead of just displaying Y/N.

For each QuoteNumber,

If Winner = "Y", then for that QuoteNumber, grab Shop "ABC" and set WinnerName = ABC

and

If ExternalShop != blank, then WinnerName = FEF

The end results I want is:

Quote Number Winner Shop External Shop Winner Name

145 Y ABC ABC

145 N TES ABC

145 N CAR ABC

647 N CAR TES

647 Y TES TES

647 N ABC TES

785 Y ABC ABC

546 N TES FEF FEF

I'm trying to make it so if a shop filters for their Shop name, the table on my report displays who they lost to on all of their quotes.

Winner Name would immediately show them if they won or who they lost to.

How do I do something like this in PowerBI?

Re: loop through table to replace certain values? for each loop? not sure how to approach issue

AntrikshSharma — Thu, 20 Jun 2024 17:15:35 GMT

test2sa I assume you are trying to add a calculated column to the data model? In that case you can use this:

WinnerName = VAR Winner = CALCULATE ( SELECTEDVALUE ( 'Table'[Shop] ), 'Table'[Winner] = "Y", ALLEXCEPT ( 'Table', 'Table'[Quote Number] ) ) RETURN IF ( 'Table'[External Shop] = "FEF", "FEF", Winner )

Re: loop through table to replace certain values? for each loop? not sure how to approach issue

test2sa — Thu, 20 Jun 2024 19:20:08 GMT

Thank you!! I've almost got it working. I'm having trouble with that IF statement at the very end.

IF (
NOT(ISBLANK('Table'[External Shop])),
'Table'[External Shop],
Winner
)

I've tried writing it a bunch of different ways and it wants to return only Winner or only External Shop. It won't return the correct one for each quote.

Re: loop through table to replace certain values? for each loop? not sure how to approach issue

AntrikshSharma — Thu, 20 Jun 2024 20:31:15 GMT

test2sa you can do IF ( 'Table'[External Shop] <> "", 'Table'[External Shop] , Winner )

Re: loop through table to replace certain values? for each loop? not sure how to approach issue

test2sa — Fri, 21 Jun 2024 12:59:03 GMT

Thank you!! That worked perfectly!