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https://issues.apache.org/jira/browse/SPARK-12687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-12687:
------------------------------------
Assignee: Apache Spark
> Support from clause surrounded by `()`
> --------------------------------------
>
> Key: SPARK-12687
> URL: https://issues.apache.org/jira/browse/SPARK-12687
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Davies Liu
> Assignee: Apache Spark
>
> This query can't be parsed under Hive parser:
> {code}
> (select * from t1) union (select * from t2)
> {code}
> also this one:
> {code}
> select * from ((select * from t1) union (select * from t2)) t
> {code}
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