Convert columns to rows with dynamic columns

[huynq]

I've tried to find the solution for this but didn't work so I post this message for your help.

I have this data:

	1/1	1/2	1/3
A	1	1	2
B	0	2	3
C	1	1	null (ignore null or default to be 0 is fine)
	2/1	2/2	null
A	1	1	null

What I'm looking for

A	1/1	1
A	1/2	1
A	1/3	2
B	1/1	0
B	1/2	2
B	1/3	3
C	1/1	1
C	1/2	1
A	2/1	1
A	2/2	1

😍I know that the data looks stupid becauseI have to deal with legacy from decade ago.

I would like to say thanks in advance. 

[Hitesh-Dsouza]

Try using "Unpivot Other Columns" under "Transform" options in Power BI.

[Jimmy801 · Accepted solution]

Hallo @huynq 

you have to first split der your data into tables, promote headers, combine your tables and then do unpivotother

Here the complete solution

let
	Source = #table
	(
		{"Column1","Column2","Column3","Column4"},
		{
			{"","1/1","1/2","1/3"},	{"A","1","1","2"},	{"B","0","2","3"},	{"C","1","1",""},	{"","2/1","2/2",""},	{"A","1","1",""}
		}
	),
    AddIndex = Table.AddIndexColumn(Source, "Index", 0, 1),
    AddDevideTable = Table.AddColumn(AddIndex, "Devide Table", each if [Column1]="" then [Index] else null),
    FillDownDevideTable = Table.FillDown(AddDevideTable,{"Devide Table"}),
    GroupTables = Table.Group(FillDownDevideTable, {"Devide Table"}, {{"AllRows", each _, type table [Column1=text, Column2=text, Column3=text, Column4=text, Index=number, Devide Table=number]}}),
	MaintainTable = Table.TransformColumns
	(
		GroupTables,
		{
			{
				"AllRows",
				(tableint) =>
				let 
					DeleteIndexDevideTable = Table.RemoveColumns(tableint, {"Index", "Devide Table"}),
					Promote = Table.PromoteHeaders(DeleteIndexDevideTable)
				in 
					Promote
			}
		}
	),
	Combine = Table.Combine
	(
		MaintainTable[AllRows]
	),
    UnpivotOther = Table.UnpivotOtherColumns(Combine, {""}, "Attribute", "Value"),
    FilterNonEmptyValue = Table.SelectRows(UnpivotOther, each ([Value] <> ""))
in
    FilterNonEmptyValue

Copy paste this code to the advanced editor in a new blank query to see how the solution works. If this solution fits your need, copy and past a part of it and implement it in your query

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy

[huynq]

That's amazing solution @Jimmy801  . Thank you very much.

By the way, how can you create that kind of amazing moves? Can you share us some experiences?

[Jimmy801]

Hello @huynq 

you are welcome. Thanks for the feedback... I appreciate that

Is all learning by doing 🙂

Difficult to pass experience. You have to really understand every function and how you can combine them.

Jimmy

[Anonymous]

I believe the function you are looking for is "Unpivot Other Columns".  You'll find it in the ribbon under "Transform"

Go into your query editor, select only the first column (that contains A, B, C etc). Select unpivot other columns and you should be good to go.