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marcelmunk's avatar
marcelmunk
Frequent Visitor
4 years ago
Solved

Retrieve value from same row based on column name in column

Hi,   Pretty basic question (I believe) as I'm a beginner in Power BI and still on my basics on DAX.   I have a Table which has the Product Name and many properties   I want to add a new ...
Need Help
  • NickOP's avatar
    NickOP
    4 years ago

    Here's an alternative solution that reads the record itself:

    = Table.AddColumn(Source, "Value", each Record.FieldOrDefault(_,[Desired Property], null))
Vijay_A_Verma's avatar
Vijay_A_Verma
Most Valuable Professional
4 years ago

Then use this

I misunderstood your requirement. Use this

= Table.Column(Source,[Desired Property]){List.PositionOf(Source[Desired Property],[Desired Property])}
marcelmunk's avatar
marcelmunk
Frequent Visitor
4 years ago

Now it looks great on the test query:

 

But it still givs me an error on the actual data:

The error msg is 'A cyclic reference was found during evaluation'

  • Vijay_A_Verma's avatar
    Vijay_A_Verma
    Most Valuable Professional
    4 years ago

    Let's try to do this through an Index column.

    let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUXIvSk3NA9LBGYlFBUDaFYiNTYBEBBAHFOUXGAFppVidaCUnIMMppzQVpDg3P78kA8jwBWIzcyARCVVtDFPtDGQEpaYASefSkpLMvHQgywOILSyBRBRUtSlYdSwA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Product Name" = _t, Prop1 = _t, Prop2 = _t, Prop3 = _t, Prop4 = _t, Prop5 = _t, #"Desired Property" = _t, Column1 = _t]),
    #"Added Index" = Table.AddIndexColumn(Source, "Index", 0, 1, Int64.Type),
    #"Added Custom" = Table.AddColumn(#"Added Index", "Value", each Table.Column(#"Added Index",[Desired Property]){[Index]}),
    #"Removed Columns" = Table.RemoveColumns(#"Added Custom",{"Index"})
in
    #"Removed Columns"
  • marcelmunk's avatar
    marcelmunk
    Frequent Visitor
    4 years ago

    Apparentlu it's working. Will test with more data. Thanks a lot.