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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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Wenchen Fan resolved SPARK-34720.
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Fix Version/s: 3.2.0
Resolution: Fixed
Issue resolved by pull request 32192
[https://github.com/apache/spark/pull/32192]
> 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
> Fix For: 3.2.0
>
>
> 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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