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https://issues.apache.org/jira/browse/SPARK-34720?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tathagata Das updated SPARK-34720:
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Summary: Incorrect star expansion logic MERGE INSERT * / UPDATE * (was:
Incorrect star expansion logic MERGE INSERT / UPDATE *)
> Incorrect star expansion logic MERGE INSERT * / UPDATE *
> --------------------------------------------------------
>
> Key: SPARK-34720
> URL: https://issues.apache.org/jira/browse/SPARK-34720
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.2, 3.1.1
> Reporter: Tathagata Das
> Priority: Major
>
> The natural expectation of INSERT * or UPDATE * in MERGE is to assign source
> columns to target columns of the same name. However, the current logic here
> generates the assignment by position.
> https://github.com/apache/spark/commit/7cfd589868b8430bc79e28e4d547008b222781a5#diff-ed19f376a63eba52eea59ca71f3355d4495fad4fad4db9a3324aade0d4986a47R1214
> This can very easily lead to incorrect results without the user realizing
> this odd behavior.
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