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Editorial Team
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Asked: 2026-06-03T21:23:07+00:00

How can you remove the warnings about unused columns arising from the Pivot key

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How can you remove the warnings about “unused columns” arising from the Pivot key value column name column when using the Unpivot data flow item …

Warning: 2012-05-10 13:30:19.97
   Code: 0x80047076
   Source: Import Client_Categories Table SSIS.Pipeline
   Description: The output column "Client_Categories" (442) on output 
   "Unpivot Output" (224) and component "Unpivot" (222) is not 
   subsequently used in the Data Flow task. Removing this unused output 
   column can increase Data Flow task performance.
End Warning

By this I mean actually remove the warning, rather than just not show it in the output … we want to run DTEXEC with the /WarnAsError option

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1 Answer

  1. Editorial Team

    One hack solution I’ve found to getting rid of the “Unused column” warning that seems to work is to add a Script Component to the Data Flow and have it use the unused pivot key value

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