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  1. Apache Arrow
  2. ARROW-11749

[C++][Dataset] Support projections between children of UnionDatasets

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    • Type: Improvement
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 3.0.0
    • Fix Version/s: 5.0.0
    • Component/s: C++
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      Description

      ARROW-11174 adds support for arbitrary expressions in projection. It'd be useful to have that power when unifying disparate child datasets. For example, even the simple case where a column is renamed in a newer data file currently cannot be accommodated.

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            • Assignee:
              bkietz Ben Kietzman
              Reporter:
              bkietz Ben Kietzman
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              • Created:
                Updated: