L. C. Hsieh created SPARK-32163:
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Summary: Nested pruning should still work for nested column
extractors of attributes with cosmetic variations
Key: SPARK-32163
URL: https://issues.apache.org/jira/browse/SPARK-32163
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.0.0
Reporter: L. C. Hsieh
Assignee: L. C. Hsieh
If the expressions extracting nested fields have cosmetic variations like
qualifier difference, currently nested column pruning cannot work well.
For example, two attributes which are semantically the same, are referred in a
query, but the nested column extractors of them are treated differently when we
deal with nested column pruning.
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