Forum Discussion

henriquelima's avatar
henriquelima
Regular Visitor
8 years ago
Solved

column name

how can I get the column name of a table and after that use as a parameter?

  • Anonymous's avatar
    Anonymous
    8 years ago

    Hi, 

     

    The important step is:

     

    #"Columns" = Table.ColumnNames(#"Changed Type")

     

    This is the M code of the example.

     

    let
        Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i44FAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t, Column3 = _t, Column4 = _t]),
        #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type text}, {"Column2", type text}, {"Column3", type text}, {"Column4", type text}}),
        #"Columns" = Table.ColumnNames(#"Changed Type")
    in
        #"Columns"

    Regards.

3 Replies

  • Anonymous's avatar
    Anonymous
    Not applicable

    Hi henriquelima,

     

    You can use Table.ColumnNames in your M code, like this:

     

     

    Next, create a new parameter and select Query option in Suggested Values. In Query field you will find your table.

     

     

     

    Regards.

    • henriquelima's avatar
      henriquelima
      Regular Visitor

      Please can you send me the full code of advanced editor to extract the column name? Just have a half picture

      • Anonymous's avatar
        Anonymous
        Not applicable

        Hi, 

         

        The important step is:

         

        #"Columns" = Table.ColumnNames(#"Changed Type")

         

        This is the M code of the example.

         

        let
            Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i44FAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type text) meta [Serialized.Text = true]) in type table [Column1 = _t, Column2 = _t, Column3 = _t, Column4 = _t]),
            #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type text}, {"Column2", type text}, {"Column3", type text}, {"Column4", type text}}),
            #"Columns" = Table.ColumnNames(#"Changed Type")
        in
            #"Columns"

        Regards.