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https://issues.apache.org/jira/browse/HIVE-20913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zoltan Haindrich reassigned HIVE-20913:
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> Narrowing nullability may cause typecheck failures
> --------------------------------------------------
>
> Key: HIVE-20913
> URL: https://issues.apache.org/jira/browse/HIVE-20913
> Project: Hive
> Issue Type: Bug
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Priority: Major
>
> CALCITE-1413 have added a logic to narrow an expression's type from nullable
> to non-nullable - this causes some issues for Hive side sanity checks.
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