Mihailo Aleksic created SPARK-54817:
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Summary: Refactor `Unpivot` resolution logic to
`UnpivotTransformer`
Key: SPARK-54817
URL: https://issues.apache.org/jira/browse/SPARK-54817
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 4.1.0
Reporter: Mihailo Aleksic
In this issue I propose to refactor `Unpivot` resolution logic to
`UnpivotTransformer` in order to reuse it in the single-pass implementation.
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