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Posted to issues@spark.apache.org by "L. C. Hsieh (Jira)" <ji...@apache.org> on 2020/07/03 02:15:00 UTC

[jira] [Created] (SPARK-32163) Nested pruning should still work for nested column extractors of attributes with cosmetic variations

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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