Use Table header as the column name in a merge query

[Anonymous]

I want to use the Table header value as the column name in a merge query I have (from a previous question)

#"Merged Columns" = Table.CombineColumns(#"Trimmed Text",mergeHeaders[headers],Combiner.CombineTextByDelimiter("|", QuoteStyle.None),"Merged")

I have tried replacing Merged with mergeHeaders[headers]  but get the error

Expression.Error: We cannot convert a value of type List to type Text.
Details:
    Value=[List]
    Type=[Type]

I have also tried mergeHeaders[headers]{0} I get no error but the merge no longed outputs data

Thank you

[Vijay_A_Verma · Accepted solution]

Use this in place of mergeHeaders[headers]

Text.BetweenDelimiters("mergeHeaders[headers]","[","]")

Note - For this merge to work, you require at least 2 column names which exist in #"Trimmed Text". This result should appear in the place where you would place this. Refer the doc here - https://docs.microsoft.com/en-us/powerquery-m/table-combinecolumns 

[Anonymous]

Yes, that's great! Thank you again