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https://issues.apache.org/jira/browse/HIVE-359?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Sichi resolved HIVE-359.
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Resolution: Fixed
Assignee: Zheng Shao
I believe this was implemented a long time ago (in whatever release included
deferred evaluation).
> Short-circuiting expression evaluation
> --------------------------------------
>
> Key: HIVE-359
> URL: https://issues.apache.org/jira/browse/HIVE-359
> Project: Hive
> Issue Type: Improvement
> Reporter: Zheng Shao
> Assignee: Zheng Shao
>
> We don't need to evaluate some sub-expressions for AND, OR, CASE, and IF.
> We should support this kind of expression operators natively so we can change
> the evaluation order and do short-circuiting.
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