Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Register now to learn Fabric in free live sessions led by the best Microsoft experts. From Apr 16 to May 9, in English and Spanish.

Reply
jamesbr
Frequent Visitor

Create columns dynamically from values

I have the following table structure:

 

2017-04-12_13-54-26.jpg

 

I want to transform it into single rows with new column 'lesson_score' with the assocated value in the row, so ultimately it would look something like this:

 

2017-04-12_13-58-35.jpg

 

Cannot work it out...  Help!

 

James

1 ACCEPTED SOLUTION
MarcelBeug
Community Champion
Community Champion

If you really want single rows, the code below results in:

 

Create columns dynamically from values 2.png

 

Edit: this won't load to the data model because of duplicate column names "Status" and "status".

I'll await further feedback first before any adjustment of the code.

 

Prerequisite: Names must be unique.

All steps are created using standard menu options, but I adjusted the code for the #"Filled Up" step to make it independent from the new column names.

 

let
    Source = Excel.Workbook(File.Contents("C:\Users\Marcel\Documents\Forum bijdragen\Power BI Community\Create columns dynamically from values.xlsx"), null, true),
    Table1_Table = Source{[Item="Table1",Kind="Table"]}[Data],
    #"Changed Type" = Table.TransformColumnTypes(Table1_Table,{{"Name", type text}, {"Status", type text}, {"Value Data", type text}}),
    #"Added Index" = Table.AddIndexColumn(#"Changed Type", "Index", 0, 1),
    #"Filled Down" = Table.FillDown(#"Added Index",{"Name", "Status"}),
    #"Duplicated Column" = Table.DuplicateColumn(#"Filled Down", "Value Data", "Value Data - Copy"),
    #"Split Column by Delimiter" = Table.SplitColumn(#"Duplicated Column", "Value Data - Copy", Splitter.SplitTextByDelimiter("=", QuoteStyle.Csv), {"Value Data - Copy.1", "Value Data - Copy.2"}),
    #"Changed Type1" = Table.TransformColumnTypes(#"Split Column by Delimiter",{{"Value Data - Copy.1", type text}, {"Value Data - Copy.2", Int64.Type}}),
    #"Pivoted Column" = Table.Pivot(#"Changed Type1", List.Distinct(#"Changed Type1"[#"Value Data - Copy.1"]), "Value Data - Copy.1", "Value Data - Copy.2"),
    #"Filled Up" = Table.FillUp(#"Pivoted Column",List.Skip(Table.ColumnNames(#"Pivoted Column"),Table.ColumnCount(#"Duplicated Column"))),
    #"Removed Columns" = Table.RemoveColumns(#"Filled Up",{"Value Data"}),
    #"Removed Duplicates" = Table.Distinct(#"Removed Columns", {"Name"}),
    #"Sorted Rows" = Table.Sort(#"Removed Duplicates",{{"Index", Order.Ascending}}),
    #"Removed Columns1" = Table.RemoveColumns(#"Sorted Rows",{"Index"})
in
    #"Removed Columns1"

 

Specializing in Power Query Formula Language (M)

View solution in original post

1 REPLY 1
MarcelBeug
Community Champion
Community Champion

If you really want single rows, the code below results in:

 

Create columns dynamically from values 2.png

 

Edit: this won't load to the data model because of duplicate column names "Status" and "status".

I'll await further feedback first before any adjustment of the code.

 

Prerequisite: Names must be unique.

All steps are created using standard menu options, but I adjusted the code for the #"Filled Up" step to make it independent from the new column names.

 

let
    Source = Excel.Workbook(File.Contents("C:\Users\Marcel\Documents\Forum bijdragen\Power BI Community\Create columns dynamically from values.xlsx"), null, true),
    Table1_Table = Source{[Item="Table1",Kind="Table"]}[Data],
    #"Changed Type" = Table.TransformColumnTypes(Table1_Table,{{"Name", type text}, {"Status", type text}, {"Value Data", type text}}),
    #"Added Index" = Table.AddIndexColumn(#"Changed Type", "Index", 0, 1),
    #"Filled Down" = Table.FillDown(#"Added Index",{"Name", "Status"}),
    #"Duplicated Column" = Table.DuplicateColumn(#"Filled Down", "Value Data", "Value Data - Copy"),
    #"Split Column by Delimiter" = Table.SplitColumn(#"Duplicated Column", "Value Data - Copy", Splitter.SplitTextByDelimiter("=", QuoteStyle.Csv), {"Value Data - Copy.1", "Value Data - Copy.2"}),
    #"Changed Type1" = Table.TransformColumnTypes(#"Split Column by Delimiter",{{"Value Data - Copy.1", type text}, {"Value Data - Copy.2", Int64.Type}}),
    #"Pivoted Column" = Table.Pivot(#"Changed Type1", List.Distinct(#"Changed Type1"[#"Value Data - Copy.1"]), "Value Data - Copy.1", "Value Data - Copy.2"),
    #"Filled Up" = Table.FillUp(#"Pivoted Column",List.Skip(Table.ColumnNames(#"Pivoted Column"),Table.ColumnCount(#"Duplicated Column"))),
    #"Removed Columns" = Table.RemoveColumns(#"Filled Up",{"Value Data"}),
    #"Removed Duplicates" = Table.Distinct(#"Removed Columns", {"Name"}),
    #"Sorted Rows" = Table.Sort(#"Removed Duplicates",{{"Index", Order.Ascending}}),
    #"Removed Columns1" = Table.RemoveColumns(#"Sorted Rows",{"Index"})
in
    #"Removed Columns1"

 

Specializing in Power Query Formula Language (M)

Helpful resources

Announcements
Microsoft Fabric Learn Together

Microsoft Fabric Learn Together

Covering the world! 9:00-10:30 AM Sydney, 4:00-5:30 PM CET (Paris/Berlin), 7:00-8:30 PM Mexico City

PBI_APRIL_CAROUSEL1

Power BI Monthly Update - April 2024

Check out the April 2024 Power BI update to learn about new features.

April Fabric Community Update

Fabric Community Update - April 2024

Find out what's new and trending in the Fabric Community.