[Power Query] Get max value of rows with grouping.

[Beck]

I am trying  to group data set to reflect the Max of the Total column.

I have this data set

Date	ProductID	Price	Orders	Total
1-Jan	a12	11	1	11
1-Jan	a13	12	3	36
1-Jan	a13	12	2	24
2-Jan	a12	11	4	44
2-Jan	a12	11	2	22
2-Jan	a12	11	5	55

I want to get it grouped by Date and ProductID and reflect Max on this date for ProductID

Date	ProductID	Price	Orders	Total	Max
1-Jan	a12	11	1	11	11
1-Jan	a13	12	3	36	36
2-Jan	a12	11	5	55	55

[Anonymous]

Hi @Beck ,

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Xiaoxin Sheng

[danextian · Accepted solution]

Hi @Beck ,

You can use the group by feature:

Here's a sample code

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMtT1SsxT0lFKNDQCkoaGIALCiNVBljUGCYKUgBjGZrhkwdgELGuEabIJCOOUBes1wiVrCsKmSrGxAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Date = _t, ProductID = _t, Price = _t, Orders = _t, Total = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Date", type date}, {"ProductID", type text}, {"Price", Int64.Type}, {"Orders", Int64.Type}, {"Total", Int64.Type}}),
    #"Grouped Rows" = Table.Group(#"Changed Type", {"Date", "ProductID", "Price"}, {{"Orders", each List.Max([Orders]), type nullable number}, {"Total", each List.Max([Total]), type nullable number}})
in
    #"Grouped Rows"