Krisztian Szucs created ARROW-9434:
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Summary: [C++] Store type_code information in UnionScalar::value
Key: ARROW-9434
URL: https://issues.apache.org/jira/browse/ARROW-9434
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Reporter: Krisztian Szucs
Fix For: 2.0.0
The format allows duplicated types in unions, so in order to properly construct
an array from a unionscalar we need to know which type to use. Currently we
only store the value as another scalar.
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