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https://issues.apache.org/jira/browse/HIVE-18713?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gopal V updated HIVE-18713:
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Component/s: (was: Vectorization)
Logical Optimizer
> Optimize: Transform IN clauses to = when there's only one element
> -----------------------------------------------------------------
>
> Key: HIVE-18713
> URL: https://issues.apache.org/jira/browse/HIVE-18713
> Project: Hive
> Issue Type: Bug
> Components: Logical Optimizer
> Affects Versions: 3.0.0
> Reporter: Gopal V
> Assignee: Gopal V
> Priority: Major
> Fix For: 3.0.0
>
> Attachments: HIVE-18713.1.patch, HIVE-18713.2.patch,
> HIVE-18713.3.patch, HIVE-18713.4.patch
>
>
> (col1) IN (col2) can be transformed to (col1) = (col2), to avoid the hash-set
> implementation.
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