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  1. Spark
  2. SPARK-24892

Simplify `CaseWhen` to `If` when there is only one branch

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Details

    • Improvement
    • Status: In Progress
    • Major
    • Resolution: Unresolved
    • 2.3.0
    • None
    • SQL
    • None

    Description

      After the rule of removing the unreachable branches, it could be only one branch left. In this situation, `CaseWhen` can be converted to `If` to do further optimization.

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          is duplicated by

          Improvement - An improvement or enhancement to an existing feature or task. SPARK-32727 replace CaseWhen with If when there is only one case

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          links to

          Pull request #21850 [Github] Pull Request #21850 (dbtsai)

          Web Link GitHub Pull Request #21850

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              dbtsai DB Tsai
              dbtsai DB Tsai
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              Dates

                Created:
                Updated: