[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

[v-shex-msft]

Hi @Beck ,

Did the above suggestions help with your scenario? if that is the case, you can consider Kudo or Accept the helpful suggestions to help others who faced similar requirements.

If these also don't help, please share more detailed information and description to help us clarify your scenario to test.

How to Get Your Question Answered Quickly 

Regards,

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"