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https://issues.apache.org/jira/browse/SPARK-40099?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-40099:
------------------------------------
Assignee: Apache Spark
> Merge adjacent CaseWhen branches if their values are the same
> -------------------------------------------------------------
>
> Key: SPARK-40099
> URL: https://issues.apache.org/jira/browse/SPARK-40099
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.4.0
> Reporter: Yuming Wang
> Assignee: Apache Spark
> Priority: Major
>
> For example:
> {code:sql}
> CASE
> WHEN f1.buyer_id IS NOT NULL THEN 1
> WHEN f2.buyer_id IS NOT NULL THEN 1
> ELSE 0
> END
> {code}
> The excepted result:
> {code:sql}
> CASE
> WHEN f1.buyer_id IS NOT NULL or f2.buyer_id IS NOT NULL
> THEN 1
> ELSE 0
> END
> {code}
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