how to select top N records in power bi

Question

I am using a dataset 

and I am using a measure for sum of mark column

DAX_mark_sum=sum(mark)

and I have got the following result

I need top 2 records and how can I do this?

Answer 1

Use the following measure:

Top 2 Emp Id :=
CALCULATE ( TOPN ( 2, VALUES ( 'Table'[Emp_Id] ), [DAX_mark_sum] + RAND () ) )

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