DAX Fridays #221: INDEX function

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A refresher of the difference between INDEX, WINDOW and OFFSET and a deeper dive into INDEX function.
Offset functions:

Window functions:

25 days of DAX Fridays challenge:

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Ruth, please do a productx video part 2. Lets say inflation rates from different countries in the same column. How would proceed to multiply them with productx? And different starting points. That would be a real challenge:-). Anyway I love your videos and the way you teach. The queso cabrales ad😂 made me laugh.

macshock
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Really like how you've used the 25 days of dax example. Thankyou, very useful.

sue_bayes
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Hello Ruth, nice work : how we can define a Row number in my table visual and note that used fields are not in the same table model . Example : my table visual called sales analysis showing 45000 rows, contains 3 fields customer(customerName) / DimDate(Date) / fact(SalesAmount), i need to add a row number that shows all the row id from 1 to 45000

ahmedmj
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I'm speaking for the 118k subscribers here... Please bring back DAX Fridays.. If there's ~300 total DAX measures and you have 235 videos, that leaves 60ish functions left lol.. Just Kidding.. I'm a paid subscriber btw :)

bradj
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The measure 'Day 2' may not work as expected in case there is a tie. The blank value may be returned. To avoid the issue I’d rather use MINX/MAXX instead of SELECTEDVALUE.

SergiyVakshul
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Thank a lot. But each time I try INDEX functions, it gives "INDEX's relation parameter may have duplicate rows.This is not allowed" error.

What could be the reason of that error ? I checked but there is no duplicated rows in my table.

kvanctavukcu
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Sorry it's a bit unrelated but I heard that we can edit the data model, create relationships, modify DAX in Power BI service.
I believe there's a related video coming up soon?
I'm so hoping we can also "Get Data" from there which would save me tons of trouble having to login RDP, remote servers....

kahhengyeong