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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-21929) Support `ALTER TABLE table_name ADD COLUMNS(..)` for ORC data source
Date Fri, 20 Oct 2017 21:29:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-21929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16213272#comment-16213272
] 

Apache Spark commented on SPARK-21929:
--------------------------------------

User 'dongjoon-hyun' has created a pull request for this issue:
https://github.com/apache/spark/pull/19545

> Support `ALTER TABLE table_name ADD COLUMNS(..)` for ORC data source
> --------------------------------------------------------------------
>
>                 Key: SPARK-21929
>                 URL: https://issues.apache.org/jira/browse/SPARK-21929
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.2.0
>            Reporter: Dongjoon Hyun
>
> SPARK-19261 implemented `ADD COLUMNS` at Spark 2.2, but ORC data source is not supported
due to its limit.
> {code}
> scala> sql("CREATE TABLE tab (c1 int, c2 int, c3 int) USING ORC PARTITIONED BY (c3)")
> scala> sql("ALTER TABLE tab ADD COLUMNS (c4 int)")
> org.apache.spark.sql.AnalysisException:
> ALTER ADD COLUMNS does not support datasource table with type ORC.
> You must drop and re-create the table for adding the new columns. Tables: `tab`;
> {code}



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