Group By with text id

[Julien74]

Hi all, 

I have some trouble for group by my data. 

I want to group by my data with text id 

and obtain something like that 

And after i want to do the average of GER and POR by month for example for January it's 50% 50% ... 

Could you help me ? 

Thank you 

Julien 

[speedramps · Accepted solution]

Try this

Click here to download a solution 

How it works

Add a new column  ..

Period = FORMAT(Facts[Date],"MMM-YYYY")

Add measures

ID count = DISTINCTCOUNT(Facts[ID])

All ids for period = CALCULATE( DISTINCTCOUNT(Facts[ID]),All(Facts[Service]))

% = DIVIDE([ID count],[All ids for period])

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[Julien74]

Thanks you, i understand well it's very clear !!