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https://issues.apache.org/jira/browse/TAJO-182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13851355#comment-13851355
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Prafulla T commented on TAJO-182:
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Also I think that NULL comparison should be evaluated to NULL which in turn
should be interpreted as false in most of cases.
I checked the implementation and Tajo does not seem to be doing that. I may
have missed somethings.
> 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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