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https://issues.apache.org/jira/browse/SPARK-13206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15133520#comment-15133520
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Liang-Chi Hsieh commented on SPARK-13206:
-----------------------------------------
I tried your query. Looks like it can be parsed. The parsed logical plan looks
like:
'Project [unresolvedalias('x.c1,None)]
+- 'Join Inner, Some(('x.c1 = 'y.c1))
:- 'Subquery x
: +- 'Project [unresolvedalias(*,None)]
: +- 'UnresolvedRelation `t1`, None
+- 'Subquery y
+- 'Project [unresolvedalias(*,None)]
+- 'UnresolvedRelation `t1`, None
> Subquery Alias in Hive Parser
> -----------------------------
>
> Key: SPARK-13206
> URL: https://issues.apache.org/jira/browse/SPARK-13206
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: Xiao Li
> Fix For: 2.0.0
>
>
> {code} select x.c1 from (select * from t1) as x inner join (select * from t1)
> as y on x.c1 = y.c1{code}
> The current Parser is unable to parse it.
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