Changes by Date and Items

Hi Anonymous ,

You can try this query:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WyixJzTVU0lEyMjAy1DfRBzENlWJ1IBJGqBJmcAljVAlLuASSUUYoOoxQJQyNsJkFljHDZhhIkSFWh4G1Y3UZmGmhFBsLAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Name = _t, Date = _t, #"Cumulative Value" = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Name", type text}, {"Date", type date}, {"Cumulative Value", Int64.Type}}),
    #"Grouped Rows" = Table.Group(#"Changed Type", {"Name"}, {{"Data", each let tab=Table.AddIndexColumn(_,"Index",1,1,Int64.Type) in Table.AddColumn(tab,"New",(x)=>try Table.Max( Table.SelectRows(tab,(y)=>y[Index]=x[Index]-1),"Index")[Cumulative Value] otherwise (x)[Cumulative Value] ), type table [Name=nullable text, Date=nullable date]}}),
    #"Added Custom" = Table.AddColumn(#"Grouped Rows", "New Data", each Table.AddColumn([Data],"Diff", each [Cumulative Value] - [New])),
    #"Removed Columns" = Table.RemoveColumns(#"Added Custom",{"Data"}),
    #"Expanded New Data" = Table.ExpandTableColumn(#"Removed Columns", "New Data", {"Date", "Cumulative Value", "Diff"}, {"New Data.Date", "New Data.Cumulative Value", "New Data.Diff"}),
    #"Sorted Rows" = Table.Sort(#"Expanded New Data",{{"New Data.Date", Order.Ascending}, {"Name", Order.Ascending}}),
    #"Renamed Columns" = Table.RenameColumns(#"Sorted Rows",{{"New Data.Date", "Date"}, {"New Data.Cumulative Value", "Cumulative Value"}, {"New Data.Diff", "Diff"}}),
    #"Changed Type1" = Table.TransformColumnTypes(#"Renamed Columns",{{"Date", type date}, {"Cumulative Value", Int64.Type}, {"Diff", Int64.Type}})
in
    #"Changed Type1"

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