Forum Discussion

JeremyB's avatar
JeremyB
Frequent Visitor
8 years ago

Split CamelCase text to new column

So here's the scenario, I have 12 enums coming through to my table.  The enum text values are in CamelCase and I want to split them at the left of each upper case letter (except for the first letter since it is the beginning of the enum text value).

 

Example:

EnumOne -> Enum One

EnumTwo -> Enum Two

Etc.

 

 

Can anyone give me some guidelines on how I should go about doing this?  I'd like to do it within PowerBI dekstop via DAX or Power Query.  

 

Thanks!

5 Replies

  • MarcelBeug's avatar
    MarcelBeug
    Community Champion
    8 years ago

    It is a bit confusing if you want to split the text (into a list, or multiple columns) or insert a space.

    I assume you want to insert a space.

    This is a Power Query solution:

     

    let
    Source = #table(type table[Enum = text],{{"EnumOne"},{"EnumTwo"}}),
    Splitted = Table.TransformColumns(Source,{{"Enum", each Text.Insert(_, Text.PositionOfAny(_,{"A".."Z"},Occurrence.Last)," "), type text}})
in
    Splitted

     

    Edit: this is how the split the column into 2 columns:

     

    let
    Source = #table(type table[Enum = text],{{"EnumOne"},{"EnumTwo"}}),
    #"Split Column by Position" = Table.SplitColumn(Source, "Enum", each Splitter.SplitTextByPositions({0, Text.PositionOfAny(_,{"A".."Z"},Occurrence.Last)})(_), {"Enum.1", "Enum.2"}),
    #"Changed Type" = Table.TransformColumnTypes(#"Split Column by Position",{{"Enum.1", type text}, {"Enum.2", type text}})
in
    #"Changed Type"

     

    You can find information on Power Query functions in my dashboard.

    • JeremyB's avatar
      JeremyB
      Frequent Visitor
      8 years ago

      Yes, I want to be able to split the text with a space at the left of each upper case letter into a new computed column.  I don't necessarily need to keep the original column though, I just need the text to be split.

       

       

      I'll give these a try and see if I can get them to work.  I appreciate the help!

       

       

      EDIT:

      MarcelBeug

       

      Is it possible to do it for each capital letter instead of the last one?

       

      Ex. 

      EnumNumberOne -> Enum Number One

       

      I tried changing 'Occurrence.Last' to 'Occurrence.All', but was given an error.  

      • MarcelBeug's avatar
        MarcelBeug
        Community Champion
        8 years ago

        Yes, it can.

         

        In such cases, the biggest challenge is to design the query such that it is dynamic with regard to the number of resulting columns.

         

        This requires some Advanced Editor programming, resulting in:

         

        let
    Source = #table(type table[Enum = text],{{"EnumNumberOne"},{"EnumTwo"}}),
    Splitted = Table.TransformColumns(Source, {{"Enum", each Splitter.SplitTextByPositions(Text.PositionOfAny(_,{"A".."Z"},Occurrence.All))(_)}}),
    Tabled = Table.TransformColumns(Splitted,{{"Enum", each Table.FromColumns(List.Zip({_}))}}),
    ColumnNames = Table.ColumnNames(Table.Combine(Tabled[Enum])),
    NewColumnNames = List.Transform(ColumnNames, each "Enum."&Text.Middle(_,6)),
    ExpandedEnum = Table.ExpandTableColumn(Tabled, "Enum", ColumnNames, NewColumnNames),
    TransformList = List.Transform(NewColumnNames, each {_,type text}),
    Typed = Table.TransformColumnTypes(ExpandedEnum, TransformList)
in
    Typed

         

        Result: