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https://issues.apache.org/jira/browse/HIVE-15986?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15973122#comment-15973122
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Vineet Garg commented on HIVE-15986:
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[~leftylev] We should document this where ever we document {{<=>}} operator
(e.g. [LanguageManual UDF |
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF] )
> Support "is [not] distinct from"
> --------------------------------
>
> Key: HIVE-15986
> URL: https://issues.apache.org/jira/browse/HIVE-15986
> Project: Hive
> Issue Type: Sub-task
> Components: SQL
> Reporter: Carter Shanklin
> Assignee: Vineet Garg
> Labels: TODOC3.0
> Fix For: 3.0.0
>
> Attachments: HIVE-15986.1.patch, HIVE-15986.2.patch,
> HIVE-15986.3.patch, HIVE-15986.4.patch, HIVE-15986.5.patch,
> HIVE-15986.5.patch, HIVE-15986.7.patch
>
>
> Support standard "is [not] distinct from" syntax. For example this gives a
> standard way to do a comparison to null safe join: select * from t1 join t2
> on t1.x is not distinct from t2.y. SQL standard reference Section 8.15
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