Flag rows based on highest percentage

[arnabmit]

I want to create a new column "Flag" which will flag the highest percentage of the same Case ID. I am an M amateur and would really appreciate some help.

The formula that I used in excel was this:

=IF(C2=MAXIFS($C$2:$C$7,$A$2:$A$7,A2),1,0)

[v-yalanwu-msft · Accepted solution]

Hi, @arnabmit ;

You could group by the Case ID column then add a condition column.

1. group by Case ID column.

2.expand the table.

3. add a condition column.

4.delete the Max column.and The final output is shown below:

In additonal , M language like below:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjQyVtJRcgRiQwNVpVgdmIgTEFtCRUyMDKFqzFBEnIHYBCpiZA7TZYwi4gLE5lARY0szqC5zU2QRkBojkEgsAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Case ID" = _t, Name = _t, Percent = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Case ID", Int64.Type}, {"Name", type text}, {"Percent", Percentage.Type}}),
    #"Grouped Rows" = Table.Group(#"Changed Type", {"Case ID"}, {{"Max", each List.Max([Percent]), type nullable number}, {"a", each _, type table [Case ID=nullable number, Name=nullable text, Percent=nullable number]}}),
    #"Expanded a" = Table.ExpandTableColumn(#"Grouped Rows", "a", {"Name", "Percent"}, {"a.Name", "a.Percent"}),
    #"Added Conditional Column" = Table.AddColumn(#"Expanded a", "Flag", each if [a.Percent] = [Max] then 1 else 0),
    #"Removed Columns" = Table.RemoveColumns(#"Added Conditional Column",{"Max"}),
    #"Renamed Columns" = Table.RenameColumns(#"Removed Columns",{{"a.Percent", "Percent"}, {"a.Name", "Name"}}),
    #"Changed Type1" = Table.TransformColumnTypes(#"Renamed Columns",{{"Percent", Percentage.Type}})
in
    #"Changed Type1"

 
Best Regards,
Community Support Team _ Yalan Wu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[arnabmit]

Thank you so much! This is perfect!

[wdx223_Daniel]

NewStep=let a=Table.Buffer(Table.Group(PreviousStepName,{"Case ID","Name"},{"n",each List.Max([Percent])})) in Table.AddColumn(PreviousStepName,"Flag",each Byte.From([Percent]=a{[Case ID=[Case ID],Name=[Name]]}[n]))

[arnabmit]

Thanks a lot for your reply!
It gave me all 1 in the Flag column. Did I do something wrong?

let
Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
#"Changed Type" = Table.TransformColumnTypes(Source,{{"Case ID", Int64.Type}, {"Name", type text}, {"Percent", type number}}),
#"Add Column" = let a=Table.Buffer(Table.Group(#"Changed Type",{"Case ID","Name"},{"n",each List.Max([Percent])})) in Table.AddColumn(#"Changed Type","Flag",each Byte.From([Percent]=a{[Case ID=[Case ID],Name=[Name]]}[n]))
in
#"Add Column"