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https://issues.apache.org/jira/browse/HIVE-2810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13214381#comment-13214381
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Carl Steinbach commented on HIVE-2810:
--------------------------------------
Have you looked at the code changes made in HIVE-741? My understanding is that
before that patch was committed Hive actually treated equi-joins as
null-safe-equijoins, so it seems like the patch should give you a pretty good
idea of what needs to be modified.
> Implement NULL-safe equality operator <=>
> -----------------------------------------
>
> Key: HIVE-2810
> URL: https://issues.apache.org/jira/browse/HIVE-2810
> Project: Hive
> Issue Type: New Feature
> Components: Query Processor, UDF
> Affects Versions: 0.9.0
> Reporter: Carl Steinbach
> Assignee: Navis
> Fix For: 0.9.0
>
> Attachments: HIVE-2810.D1791.1.patch
>
>
> Ref:
> http://dev.mysql.com/doc/refman/5.0/en/comparison-operators.html#operator_equal-to
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