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https://issues.apache.org/jira/browse/SPARK-30615?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-30615.
---------------------------------
    Fix Version/s: 3.0.0
       Resolution: Fixed

Issue resolved by pull request 27350
[https://github.com/apache/spark/pull/27350]

> normalize the column name in AlterTable
> ---------------------------------------
>
>                 Key: SPARK-30615
>                 URL: https://issues.apache.org/jira/browse/SPARK-30615
>             Project: Spark
>          Issue Type: New Feature
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Wenchen Fan
>            Assignee: Burak Yavuz
>            Priority: Major
>             Fix For: 3.0.0
>
>
> Because of case insensitive resolution, the column name in AlterTable may 
> match the table schema but not exactly the same. To ease DS v2 
> implementations, Spark should normalize the column name before passing them 
> to v2 catalogs, so that users don't need to care about the case sensitive 
> config.



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