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https://issues.apache.org/jira/browse/SPARK-22546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16256901#comment-16256901
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Apache Spark commented on SPARK-22546:
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User 'xuanyuanking' has created a pull request for this issue:
https://github.com/apache/spark/pull/19773
> Allow users to update the dataType of a column
> ----------------------------------------------
>
> Key: SPARK-22546
> URL: https://issues.apache.org/jira/browse/SPARK-22546
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.0
> Reporter: Li Yuanjian
>
> [SPARK-17910|https://issues.apache.org/jira/browse/SPARK-17910] supported
> user to change comment of column, the patch also left TODO for other
> metadata. Here just implement the dataType changing requirement, others like
> renaming column and changing position may have different considerations in
> datasource table and hive table, maybe need more discussion.
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