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From "Adam Kramer (JIRA)" <>
Subject [jira] Resolved: (HIVE-1919) Allow ARRAY_CONTAINS to be used as join key
Date Tue, 18 Jan 2011 19:44:44 GMT


Adam Kramer resolved HIVE-1919.

    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:
>             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 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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