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https://issues.apache.org/jira/browse/HIVE-18713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16368029#comment-16368029
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Gopal V commented on HIVE-18713:
--------------------------------
No.
{code}
The 1st argument of EQUAL is expected to a primitive type, but struct is found
(state=42000,code=10016)
{code}
> 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: Vectorization
> Affects Versions: 3.0.0
> Reporter: Gopal V
> Assignee: Gopal V
> Priority: Major
> 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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