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Posted to issues@spark.apache.org by "DB Tsai (JIRA)" <ji...@apache.org> on 2018/07/27 23:55:00 UTC

[jira] [Created] (SPARK-24953) Prune a branch in `CaseWhen` if previously seen

DB Tsai created SPARK-24953:
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             Summary: Prune a branch in `CaseWhen` if previously seen
                 Key: SPARK-24953
                 URL: https://issues.apache.org/jira/browse/SPARK-24953
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.3.0
            Reporter: DB Tsai


If a condition in a branch is previously seen, this branch can be pruned.

If the outputs of two adjacent branches are the same, two branches can be combined.



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