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Joris Van den Bossche updated ARROW-15564: ------------------------------------------ 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) -- This message was sent by Atlassian Jira (v8.20.1#820001)