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Editorial Team
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Asked: 2026-05-18T05:12:48+00:00

In my Flat File source, i have all the columns mapped to output columns

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In my Flat File source, i have all the columns mapped to output columns with the right type and all.

After retriving the data, i check if the reference contained in the file exists in the database, if they don’t, i have to log the line and write which value did not find a match.

So, in order to log the line, I would like top have a column containing the complete original line, just like the error output “Flat File Source Error Output Column”.

So my question is: Is there a way to add a column to my Flat File Source, that would contain the complete line, without formatting in the data?

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1 Answer

  1. Editorial Team

    I would use a Derived Column Task and specify a new column to be added by concatenating all the columns from the text file.

    For example, if your text file has the following structure:

    Col1, Col2, Col3, Col4, Col5

    Your derived column would specify the following Expression:

    [Col1] + [Col2] + [Col3] + [Col4] + [Col5]

    You could optionally add a delimiter if you wanted to break apart the columns.

    This would return an addition column to be used in subsequent data flow tasks.

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