Dynamic - Grouping by a Measure column - combining the text values

[Anonymous]

I have a table "School" :

School
Class	Names	Counts
c1	XXX	1
c1	YYY	2
c2	ZZZ	3
c2	AAA	4
c3	AAA	2
c3	BBB	3
c4	BBB	2
c5	CCC	0
c5	CCC	1
c5	DDD	2
c6	FFF	1

I have created a 'Total Counts' groupby 'Names' column & created Rank based on 'Total count' Measure.

Names	Total counts	Rank
AAA	6	1
BBB	5	2
ZZZ	3	3
DDD	2	4
YYY	2	4
CCC	1	5
FFF	1	5
XXX	1	5

I wanted to create a 'new column' called 'Updated Names' which concatenate the value as shown in the below table based on 'Total Counts' column (Dynamically Grouping by a Measure column - combining the values)

Expected output
Updated Names	Total counts	Rank
AAA	6	1
BBB	5	2
ZZZ	3	3
DDD,YYY	2	4
CCC,FFF,XXX	1	5

[v-stephen-msft · Accepted solution]

Hi @Anonymous ,

When you complete this step, write the following statement in the advanced editor, then sort in descending order and add an index column. The index column is your Rank column.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("XctLCsAgDEXRvWTsoH7auVFcg4k46v730AeKgU4uj0MyBr2eHPXeUU/TbRARNCwImKqKRoOcM5oWxAPBgJntJR3YFzdmKQW9/uANaq328mC21tbF/AA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Class = _t, Names = _t, Counts = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Class", type text}, {"Names", type text}, {"Counts", Int64.Type}}),
    #"Grouped Rows" = Table.Group(#"Changed Type", {"Names"}, {{"Total counts", each List.Sum([Counts]), type nullable number}}),
    #"Combined Values"= Table.Group(#"Grouped Rows" , {"Total counts"}, {{"Combine Values", each Text.Combine([Names], ","), type text}}),
    #"Sorted Rows" = Table.Sort(#"Combined Values",{{"Total counts", Order.Descending}}),
    #"Added Index" = Table.AddIndexColumn(#"Sorted Rows", "Index", 1, 1, Int64.Type),
    #"Renamed Columns" = Table.RenameColumns(#"Added Index",{{"Index", "Rank"}})
in
    #"Renamed Columns"

Best Regards,

Stephen Tao

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Greg_Deckler]

@Anonymous Well, maybe a measure like:

Measure = 
  VAR __Rank = [Rank]
  VAR __Table =
    ADDCOLUMNS(
      SUMMARIZE('Table',[Names],"Counts",SUM('Table'[Counts])),
      "Rank",[Rank]
    )
RETURN
  CONCATENATEX(FILTER(__Table,[Rank]=__Rank),[Names],",")