L. C. Hsieh created SPARK-33092:
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Summary: Support subexpression elimination in ProjectExec
Key: SPARK-33092
URL: https://issues.apache.org/jira/browse/SPARK-33092
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 3.1.0
Reporter: L. C. Hsieh
Assignee: L. C. Hsieh
Users frequently write repeatedly expression in projection. Currently in
ProjectExec, we don't support subexpression elimination in Whole-stage codegen.
We can support it to reduce redundant evaluation.
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