Forum Discussion
Duplicating Rows based on Value in Column
Hi All - I need support via Power Query to transfrom my data as below:
Essentially Duplicated the Rows, and convert the "count" to 1
Also, data table is added below the screenshot.
Cheers!!
| Type | Jan-20 | Feb-20 | Mar-20 | Apr-20 |
| A | 1 | 1 | 2 | 2 |
| B | 2 | 2 | 2 | 1 |
| C | 1 | 1 | 3 | 3 |
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.
5 Replies
Hi hackfifi ,,
I think that this will get you there and then you can change the value to "1" from "2" or "3".
https://community.powerbi.com/t5/Desktop/Create-Duplicate-Entries-based-on-Column-Value/td-p/359228
I would appreciate Kudos if my response was helpful. I would also appreciate it if you would Mark this As a Solution if it solved the problem. Thanks!
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"I would appreciate Kudos if my response was helpful. I would also appreciate it if you would Mark this As a Solution if it solved the problem. Thanks!
