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https://issues.apache.org/jira/browse/HIVE-13583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15979186#comment-15979186
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Ashutosh Chauhan commented on HIVE-13583:
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Are you suggesting to add {{UNKNOWN}} as a keyword in grammar. I am not sure
how is that connected to this jira which is about supporting search conditions
of form : "<predicate> is not true; It should be possible (infact, desired
that) we add this support with current grammar.
Even if {{UNKNOWN}} is specified in standard discussion on how and when to add
it should be a separate effort.
> E061-14: Search Conditions
> --------------------------
>
> Key: HIVE-13583
> URL: https://issues.apache.org/jira/browse/HIVE-13583
> Project: Hive
> Issue Type: Sub-task
> Reporter: Carter Shanklin
>
> This is a part of the SQL:2011 Analytics Complete Umbrella JIRA HIVE-13554.
> Support for various forms of search conditions are mandatory in the SQL
> standard. For example, "<predicate> is not true;" Hive should support those
> forms mandated by the standard.
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