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https://issues.apache.org/jira/browse/SPARK-5583?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Reynold Xin closed SPARK-5583.
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Resolution: Won't Fix
Going to close this one as won't fix since it is a weird syntax that only Hive
has (and as far as I know not that many Hive users know about it).
The patch is already on GitHub. We can merge that in the future if there is
strong demand.
> Support unique join in hive context
> -----------------------------------
>
> Key: SPARK-5583
> URL: https://issues.apache.org/jira/browse/SPARK-5583
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 1.2.0
> Reporter: wangfei
>
> Support unique join in hive context:
> FROM UNIQUEJOIN PRESERVE T1 a (a.key), PRESERVE T2 b (b.key), PRESERVE T3 c
> (c.key)
> SELECT a.key, b.key, c.key;
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