Transform data like two row with main title and subtitle ?

Hello utgqw 

 

 

here another approach. It uses List.Generate to create a new column that identifies the main groups. In the Group-function the first row is deleted and a new column with the main-cat is added

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WcgQCJR0lQwMDpVidaKXE4pQ0INcYGw/CMYFwnIAAyDOC6itOBEvCjClPLQLyTJH1gTixAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Cat = _t, Column1 = _t]),
    ChangedType = Table.TransformColumnTypes(Source,{{"Cat", type text}, {"Column1", Int64.Type}}),
    GenerateGroupColumns = List.Generate
    (
        ()=> [RunningTotal = ChangedType[Column1]{0}, Counter=0, Group=1],
        each [Counter]<= Table.RowCount(ChangedType)-1,
        (rec)=>
        [
            RunningTotal = if rec[RunningTotal] - ChangedType[Column1]{rec[Counter]+1}< 0 then ChangedType[Column1]{rec[Counter]+1} else rec[RunningTotal] - ChangedType[Column1]{rec[Counter]+1},
            Counter = rec[Counter]+1,
            Group = if rec[RunningTotal] - ChangedType[Column1]{rec[Counter]+1}< 0 then rec[Group]+1 else rec[Group]
        ],
        each [Group]
    ),
    CreateTable = Table.FromColumns(Table.ToColumns(ChangedType)&{GenerateGroupColumns}, Table.ColumnNames(ChangedType)&{"Group"}),
    GroupedRows = Table.Group
    (
        CreateTable, 
        {"Group"}, 
        {
            {
                "AllRows", 
                (tbl)=> Table.AddColumn(Table.Skip(tbl,1), "Main", each tbl[Cat]{0})
            }
        }
    ),
    RemovedOtherColumns = Table.SelectColumns(GroupedRows,{"AllRows"}),
    ExpandedAllRows = Table.ExpandTableColumn(RemovedOtherColumns, "AllRows", {"Cat", "Column1", "Group", "Main"}, {"Cat", "Column1", "Group", "Main"})
in
    ExpandedAllRows

 

Copy paste this code to the advanced editor in a new blank query to see how the solution works.

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy