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https://issues.apache.org/jira/browse/SPARK-26388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16724751#comment-16724751
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Hyukjin Kwon commented on SPARK-26388:
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Can you add expected input / output in the description? that should be easier
to follow.
> No support for "alter table .. replace columns" to drop columns
> ---------------------------------------------------------------
>
> Key: SPARK-26388
> URL: https://issues.apache.org/jira/browse/SPARK-26388
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.2.1, 2.3.1, 2.3.2
> Reporter: nirav patel
> Priority: Major
>
> Looks like hive {{replace columns}} is not working with spark 2.2.1 and 2.3.1
>
> {{alterSchemaSql : alter table myschema.mytable replace columns (a int,b
> int,d int) Exception in thread "main"
> org.apache.spark.sql.catalyst.parser.ParseException: Operation not allowed:
> alter table replace columns(line 2, pos 6) }}
> {{ADD COLUMNS}} works which seemed to previously reported and fixed as well:
> https://issues.apache.org/jira/browse/SPARK-18893
>
> Replace columns should be supported as well. afaik, that's the only way to
> delete hive columns.
>
>
> It supposed to work according to this docs:
> [https://docs.databricks.com/spark/latest/spark-sql/language-manual/alter-table-or-view.html#replace-columns]
> [https://spark.apache.org/docs/2.2.0/sql-programming-guide.html#supported-hive-features]
>
> but it's throwing error for me on 2 different versions.
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