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https://issues.apache.org/jira/browse/FLINK-31350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Nuyanzin updated FLINK-31350:
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Parent: (was: FLINK-27998)
Issue Type: Technical Debt (was: Sub-task)
> Support Calcite's 1.30+ UnknownType
> ------------------------------------
>
> Key: FLINK-31350
> URL: https://issues.apache.org/jira/browse/FLINK-31350
> Project: Flink
> Issue Type: Technical Debt
> Components: Table SQL / API
> Affects Versions: 1.18.0
> Reporter: Sergey Nuyanzin
> Priority: Major
>
> In 1.30 in Calcite https://issues.apache.org/jira/browse/CALCITE-4872 there
> has been introduced a new type UNKNOWN which is similar to NULL however is
> not nullable by default and as a result breaks some tests.
>
> I guess a similar type should be introduced in Flink to support it
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