Max date Keeping Ids Fixed

Hi Gcsingh149,

Give this a go.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjI2MTUzVNJRAiIDM10DE10jY6VYnVEJ6koYWOgaGINEcSowhYriVGBGEwWxAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [ID = _t, Date = _t, Desired_Column = _t]),
    ChType = Table.TransformColumnTypes(Source,{{"Date", type date}, {"Desired_Column", type date}}),
    GroupRows = Table.Group(ChType, {"ID"}, {{"t", each List.Transform( [Date], (x)=> List.Max([Date])), type list}}),
    Expand = Table.ExpandListColumn(GroupRows, "t")
in
    Expand

with this result

I hope this is helpful

Hi Gcsingh149 ,

Please try.

List.Max( Table.SelectRows( PreviousStepName, (x) => x[ID] = [ID])[Date] )

all steps.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjI2MTUzVNJRUorVGfI8AwtdA2NdI2OEqBFI1FTXwART1Axd1JAI0VgA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [ID = _t, Date = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"ID", Int64.Type}, {"Date", type date}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Max Date", each List.Max( Table.SelectRows( #"Changed Type", (x) => x[ID] = [ID])[Date] ))
in
    #"Added Custom"

Best Regards,
Gao
Community Support Team

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