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PietroFarias
Resolver II
Resolver II

Duplicate Rows of a Query (Power Query)

Would anyone know how I can duplicate the rows of a query based on a value in a column?

Here's an example:

 

 

IDInstallments
13575
16063
11262


To:

IDInstallments
13571
13572
13573
13574
13575
16061
16062
16063
11261
11262
1 ACCEPTED SOLUTION
Ashish_Mathur
Super User
Super User

Hi,

 

Try this M code

 

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjQ2NVfSUTJVitUBcswMzIAcYwjH0AjEMVKKjQUA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type text) meta [Serialized.Text = true]) in type table [ID = _t, Installments = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"ID", Int64.Type}, {"Installments", Int64.Type}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each {Number.From(1)..Number.From([Installments])}),
    #"Expanded Custom" = Table.ExpandListColumn(#"Added Custom", "Custom"),
    #"Removed Columns" = Table.RemoveColumns(#"Expanded Custom",{"Installments"}),
    #"Renamed Columns" = Table.RenameColumns(#"Removed Columns",{{"Custom", "Instalments"}}),
    #"Changed Type1" = Table.TransformColumnTypes(#"Renamed Columns",{{"Instalments", Int64.Type}})
in
    #"Changed Type1"

 

Here is the result

 

Untitled.png


Regards,
Ashish Mathur
http://www.ashishmathur.com
https://www.linkedin.com/in/excelenthusiasts/

View solution in original post

3 REPLIES 3
cbhaskarUTA
New Member

Thanks Pietro & Ashish for this question and solution! Very helpful for adding/duplicating rows based on a column variable so that each unique instance can be assigned a primary key.

You are welcome.


Regards,
Ashish Mathur
http://www.ashishmathur.com
https://www.linkedin.com/in/excelenthusiasts/
Ashish_Mathur
Super User
Super User

Hi,

 

Try this M code

 

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjQ2NVfSUTJVitUBcswMzIAcYwjH0AjEMVKKjQUA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type text) meta [Serialized.Text = true]) in type table [ID = _t, Installments = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"ID", Int64.Type}, {"Installments", Int64.Type}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each {Number.From(1)..Number.From([Installments])}),
    #"Expanded Custom" = Table.ExpandListColumn(#"Added Custom", "Custom"),
    #"Removed Columns" = Table.RemoveColumns(#"Expanded Custom",{"Installments"}),
    #"Renamed Columns" = Table.RenameColumns(#"Removed Columns",{{"Custom", "Instalments"}}),
    #"Changed Type1" = Table.TransformColumnTypes(#"Renamed Columns",{{"Instalments", Int64.Type}})
in
    #"Changed Type1"

 

Here is the result

 

Untitled.png


Regards,
Ashish Mathur
http://www.ashishmathur.com
https://www.linkedin.com/in/excelenthusiasts/

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