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https://issues.apache.org/jira/browse/SPARK-29441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16949961#comment-16949961
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Lantao Jin commented on SPARK-29441:
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ALTER TABLE CHANGE COLUMN command only supports changing the comment of a
non-partition column for now.
> Unable to Alter table column type in spark.
> -------------------------------------------
>
> Key: SPARK-29441
> URL: https://issues.apache.org/jira/browse/SPARK-29441
> Project: Spark
> Issue Type: Bug
> Components: Spark Shell
> Affects Versions: 2.3.1
> Environment: spark -2.3
> hadoop -2.4
> Reporter: prudhviraj
> Priority: Major
>
> Unable to alter table column type in spark.
> scala> spark.sql("""alter table tablename change col1 col1 string""")
> org.apache.spark.sql.AnalysisException: ALTER TABLE CHANGE COLUMN is not
> supported for changing column 'col1' with type 'LongType' to 'col1' with type
> 'StringType';
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