How to Group By with multiple columns?

[chuongmep]

Is your feature request related to a problem? Please describe.
I want can use GroupBy with list input column for dataframe

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It could be good like this and allow return with new dataframe

var groupBy = df.GroupBy(new string[] { "Area", "Level" });

Or :

df.GroupBy("Level", "Building Name").Select("Source File", "Area", "Level", "Building Name");

This is python :

df_report_grouped = df_report.groupby(['Building Name', 'Level'])['Area'].sum().reset_index()

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[asmirnov82]

Hi, @chuongmep this is duplicated to #5724 and was initialy planned for ML.Net 3.0 (however looks like development was postponed). See more details here: #6144