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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/04/26 20:33:03 UTC

[GitHub] [arrow-datafusion] alamb commented on issue #2343: Support Multi-Column Producing Function Implementation

alamb commented on issue #2343:
URL: https://github.com/apache/arrow-datafusion/issues/2343#issuecomment-1110222756

   I think a multiple column table function is different than a "table function"
   
   A table function returns (potentially) multiple columns *and* rows where as I think this ticket is just talking about returning multiple columns.
   
   The natural thing in my mind for this usecase would be to return a single column of `DataType::Struct` (or `DataType::List`)
   
   However DataFusion's support for such compound datatypes is in need of work -- see https://github.com/apache/arrow-datafusion/issues/2326


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