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https://issues.apache.org/jira/browse/ARROW-15564?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joris Van den Bossche updated ARROW-15564:
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Summary: [C++] Expose MergeOptions in array Concatenate to unify types
(was: [C++] Expose MergeOptions in Concatenate to unify types)
> [C++] Expose MergeOptions in array Concatenate to unify types
> -------------------------------------------------------------
>
> Key: ARROW-15564
> URL: https://issues.apache.org/jira/browse/ARROW-15564
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Reporter: Joris Van den Bossche
> Priority: Major
>
> The {{arrow::ConcatenateTables}} function exposes the {{Field::MergeOptions}}
> as a way to indicate how fields with different types should be merged
> ("unified" / "common type").
> The version to concatenate arrays ({{arrow::Concatenate}}) currently requires
> all same-typed arrays. We could add a MergeOptions option here as well?
> (this depends on ARROW-14705 to make this option more useful, currently it
> only handles null -> any upcasts, I think)
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