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https://issues.apache.org/jira/browse/HIVE-1919?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adam Kramer resolved HIVE-1919.
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Resolution: Won't Fix
Just realized that this is not in fact an equi-join...and there is no way to
actually delete issues here. Hmph.
> Allow ARRAY_CONTAINS to be used as join key
> -------------------------------------------
>
> Key: HIVE-1919
> URL: https://issues.apache.org/jira/browse/HIVE-1919
> Project: Hive
> Issue Type: Improvement
> Reporter: Adam Kramer
>
> Using ARRAY_CONTAINS(b.haystack, a.needle) fails with the "Both Left and
> Right Aliases Encountered in Join" error. But, it doesn't have to...it is
> effectively an equi-join, just more complicated. The appropriate
> functionality can be attained using EXPLODE and GROUP BY, but that is
> ridiculous in terms of amount of work generated for the cluster.
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