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https://issues.apache.org/jira/browse/TAJO-182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13851431#comment-13851431
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Hyunsik Choi commented on TAJO-182:
-----------------------------------
Hi Prafulla,
Thank you for reminding this issue!! Yes, you are right. Exactly, null
comparison should result in NULL value instead of false value. Actually, almost
of all functions are doing that. But, operators between primitive values does
not so. This issue was intended to an temporal solution. We have to fix this
issue.
> Null comparison should be false
> -------------------------------
>
> Key: TAJO-182
> URL: https://issues.apache.org/jira/browse/TAJO-182
> Project: Tajo
> Issue Type: Bug
> Components: planner/optimizer
> Reporter: Hyunsik Choi
> Fix For: 0.8-incubating
>
>
> If some domain value is compared to Null value, the current implementation
> will cause InvalidOperationException. Such cases should result in 'false'.
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