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https://issues.apache.org/jira/browse/HIVE-10636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14549594#comment-14549594
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Julian Hyde commented on HIVE-10636:
------------------------------------
If you wrap every WHERE clause predicate (and other predicates such as HAVING)
in "... IS TRUE" you don't need to pass context.
> CASE comparison operator rotation optimization
> ----------------------------------------------
>
> Key: HIVE-10636
> URL: https://issues.apache.org/jira/browse/HIVE-10636
> Project: Hive
> Issue Type: New Feature
> Components: Logical Optimizer
> Affects Versions: 0.14.0, 1.0.0, 1.2.0, 1.1.0
> Reporter: Ashutosh Chauhan
> Assignee: Ashutosh Chauhan
> Fix For: 1.2.0
>
> Attachments: HIVE-10636.1.patch, HIVE-10636.2.patch,
> HIVE-10636.3.patch, HIVE-10636.patch
>
>
> Step 1 as outlined in description of HIVE-9644
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