Help with relationships | Power BI Desktop

Hi carlos_ferreira ,

According to your description, here are my steps you can follow as a solution.

(1) My test data is the same as yours.

(2) We can create a measure. 

Measure = LOOKUPVALUE('rep'[rep_descricao],'rep'[index_rep],MAX('medida'[rep_index]))

(3)We can create a table and a measure.

Table = 

var _table=SUMMARIZE('medida','medida'[index_medida],'medida'[rep_index],"test",[Measure])
return ADDCOLUMNS(_table,"descricao",CONCATENATEX(FILTER(_table,[index_medida]=EARLIER('medida'[index_medida])),[test]," and "))

des = CALCULATE(MAX('Table'[descricao]),FILTER(ALL('Table'),'Table'[index_medida]=SELECTEDVALUE('medida'[index_medida])))

(4) Then the result is as follows.

If the above one can't help you get the desired result, please provide some sample data in your tables (exclude sensitive data) with Text format and your expected result with backend logic and special examples. It is better if you can share a simplified pbix file. Thank you.

Best Regards,

Neeko Tang

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