Grouping Column

[FJS]

Hi,

It might be a stupid question. I tried but not able to find the perfect result.

I am trying to convert multiple columns into group rows in power query.

Below are the examples.

Data which I have (its a sample I have lot of columns after new department) :

Name	Old City	New City	Old Department	New Department
James	New York	Columbus	Finance	Procurement
Harry	Mesa	Dallas	Procurement	Analytics

Data (Result) which I want in power query:

Name	Change type	Old Value	New Value
James	City	New York	Columbus
James	Department	Finance	Procurement
Harry	City	Mesa	Dallas
Harry	Department	Procurement	Analytics

Thanks in Advance for your help!!

[FJS]

Thanks for the reply.

If it is possible can you show me in other ways.

It would be best if you can show in the way which have no coding in it.

As my client might also need to do this in future by himself.

[v-jingzhan-msft]

Hi @FJS 

You can paste the code provided by @m_dekorte into a blank query's Advanced Editor, click OK. Then you will see the result table. In the Applied Steps pane on the right side, there are detailed steps of this query. Click every step from top to bottom to check how it works step by step. 

For a deep dive on how to incorporate M code from the forums into your code, you can refer to the following resources:

Utilizing M Code Samples Given as Solutions in Power Query

Power BI Forum Help: How to integrate M-code into your existing solution

Don't be afraid of the M code. You will find that copying and pasting the M code is easier than replicating all steps one by one manually. And M code can be saved as a backup. 

Feel free to let us know if you're not sure how a step is implemented.

Best Regards,
Jing

[FJS]

Hi @v-jingzhan-msft @m_dekorte ,

I tried pasting code in my file but it is giving me error. IT looks like i have the number in the name column.

Below is the code and snippet of the error.

Error snippet

Code:

let

Source = Excel.CurrentWorkbook(){[Name="Table7"]}[Content],
#"Removed Columns" = Table.RemoveColumns(Source,{"Column4", "Column5", "Column6", "Column7", "Column10", "Column11", "Column12", "Column13", "Column14"}),
#"Reordered Columns" = Table.ReorderColumns(#"Removed Columns",{"Column1", "Column2", "Column8", "Column3", "Column9"}),
#"Removed Top Rows" = Table.Skip(#"Reordered Columns",1),
#"Promoted Headers" = Table.PromoteHeaders(#"Removed Top Rows", [PromoteAllScalars=true]),
#"Changed Type" = Table.TransformColumnTypes(#"Promoted Headers",{{"PCI", Int64.Type}, {"PCI Name", type text}, {"PCI Name_1", type text}, {"SiteIn", type text}, {"SiteIn_2", type text}}),
#"Renamed Columns" = Table.RenameColumns(#"Changed Type",{{"PCI Name", "Old PCM Name"}, {"PCI Name_1", "New PCM Name"}, {"SiteIn", "Old SiteM"}, {"SiteIn_2", "New SiteM"}}),

UnpivotOthers = Table.UnpivotOtherColumns(#"Renamed Columns", {"PCI"}, "Attribute", "Value"),
SplitByDelimiter = Table.SplitColumn(UnpivotOthers, "Attribute", Splitter.SplitTextByEachDelimiter({" "}, QuoteStyle.Csv, false), {"Attribute.1", "Attribute.2"}),
MergeColumns = Table.CombineColumns(SplitByDelimiter,{"PC", "Attribute.2"},Combiner.CombineTextByDelimiter("|", QuoteStyle.None),"Merged"),
PivotColumn = Table.Pivot(MergeColumns, List.Distinct(MergeColumns[Attribute.1]), "Attribute.1", "Value"),
SplitColumn = Table.SplitColumn(PivotColumn, "Merged", Splitter.SplitTextByDelimiter("|", QuoteStyle.Csv), {"City", "Change Type"})
in
SplitColumn

[v-jingzhan-msft · Accepted solution]

Hi @FJS 

This error indicates that you are trying to convert a text type value into Number type. This usually happens in the Changed type step. Please check whether the value "FC0001" appears in "PCI" column. If so, change its column type to text instead. 

Change below step from

#"Changed Type" = Table.TransformColumnTypes(#"Promoted Headers",{{"PCI", Int64.Type}, {"PCI Name", type text}, {"PCI Name_1", type text}, {"SiteIn", type text}, {"SiteIn_2", type text}}),

to

#"Changed Type" = Table.TransformColumnTypes(#"Promoted Headers",{{"PCI", type text}, {"PCI Name", type text}, {"PCI Name_1", type text}, {"SiteIn", type text}, {"SiteIn_2", type text}}),

[FJS]

Attaching snippet for more clarity.

[m_dekorte]

Hi @FJS,

See your topic here:
https://community.fabric.microsoft.com/t5/Power-Query/Grouping-Columns/m-p/3761576#M123775