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Date: Fri, 18 Feb 2011 23:30:38 +0000 (UTC)
From: "John Sichi (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
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 <697083765.2174.1298071838880.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] Resolved: (HIVE-359) Short-circuiting expression evaluation
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     [ https://issues.apache.org/jira/browse/HIVE-359?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

John Sichi resolved HIVE-359.
-----------------------------

    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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