Forum Discussion
Duplicating Rows based on Value in Column
Hi hackfifi ,
You could try below M code
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTKEYiMwjtWJVnKC8yDYECzqjKTWGIxjYwE=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Type = _t, #"Jan-20" = _t, #"Feb-20" = _t, #"Mar-20" = _t, #"Apr-20" = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"Type", type text}, {"Jan-20", Int64.Type}, {"Feb-20", Int64.Type}, {"Mar-20", Int64.Type}, {"Apr-20", Int64.Type}}), #"Unpivoted Columns" = Table.UnpivotOtherColumns(#"Changed Type", {"Type"}, "Attribute", "Value"), #"Added Custom1" = Table.AddColumn(#"Unpivoted Columns", "Custom", each {Number.From(1)..Number.From([Value])}), #"Expanded Custom" = Table.ExpandListColumn(#"Added Custom1", "Custom"), #"Pivoted Column" = Table.Pivot(#"Expanded Custom", List.Distinct(#"Expanded Custom"[Attribute]), "Attribute", "Value", List.Count), #"Removed Columns" = Table.RemoveColumns(#"Pivoted Column",{"Custom"}), #"Replaced Value" = Table.ReplaceValue(#"Removed Columns",0,null,Replacer.ReplaceValue,{"Jan-20", "Feb-20", "Mar-20", "Apr-20"}) in #"Replaced Value"Best Regards,
Zoe ZhiIf this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
collinq thanks mate - but that doesnt work as i need to do this in the POWER QUERY, and the complication is my "count" is across columns (i.e. by month)
I tried unpivoting the data and doing it; but no luck.
Appreciate your response.
Hi hackfifi ,
I have run out of time but I ALMOST have it. Since I won't get back to this for about 4 days I am giving what I have right now. I did an unpivot and a pivot and I get this result:
| Type | 20-Jan | 20-Feb | 20-Mar | 20-Apr | |
| A | 1 | 1 | 0 | 0 | |
| A | 0 | 0 | 1 | 1 | |
| B | 0 | 0 | 0 | 1 | |
| B | 1 | 1 | 1 | 0 | |
| C | 1 | 1 | 0 | 0 | |
| C | 0 | 0 | 1 | 1 | |
What is missing is the expected third row of "C". I am wondering if we put a "count" or an index field or something that we can add to the pivot? Let me know how it goes, I will check back next week when I can.
I built my own data table to match your original (or so I think) so my source and yours will differ....
Here is the code I used to get there:
let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTKEYiMwjtWJVnKC8yDYECzqjKTWGIxjYwE=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Type = _t, #"Jan-20" = _t, #"Feb-20" = _t, #"Mar-20" = _t, #"Apr-20" = _t]),
#"Changed Type" = Table.TransformColumnTypes(Source,{{"Type", type text}, {"Jan-20", Int64.Type}, {"Feb-20", Int64.Type}, {"Mar-20", Int64.Type}, {"Apr-20", Int64.Type}}),
#"Unpivoted Columns" = Table.UnpivotOtherColumns(#"Changed Type", {"Type"}, "Attribute", "Value"),
#"Renamed Columns" = Table.RenameColumns(#"Unpivoted Columns",{{"Attribute", "Month"}}),
#"Added Custom" = Table.AddColumn(#"Renamed Columns", "GiveMea1", each 1),
#"Changed Type1" = Table.TransformColumnTypes(#"Added Custom",{{"GiveMea1", type text}}),
#"Pivoted Column" = Table.Pivot(#"Changed Type1", List.Distinct(#"Changed Type1"[Month]), "Month", "GiveMea1", List.Count),
#"Removed Columns" = Table.RemoveColumns(#"Pivoted Column",{"Value"})
in
#"Removed Columns"