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https://issues.apache.org/jira/browse/ARROW-11749?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ben Kietzman updated ARROW-11749:
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Fix Version/s: (was: 4.0.0)
5.0.0
> [C++][Dataset] Support projections between children of UnionDatasets
> --------------------------------------------------------------------
>
> Key: ARROW-11749
> URL: https://issues.apache.org/jira/browse/ARROW-11749
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 3.0.0
> Reporter: Ben Kietzman
> Assignee: Ben Kietzman
> Priority: Major
> Labels: dataset
> Fix For: 5.0.0
>
>
> 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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