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https://issues.apache.org/jira/browse/FLINK-38069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated FLINK-38069:
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Labels: pull-request-available (was: )
> The nullability of function ENCODE return type differs in Table API and SQL
> ---------------------------------------------------------------------------
>
> Key: FLINK-38069
> URL: https://issues.apache.org/jira/browse/FLINK-38069
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Reporter: dylanhz
> Priority: Major
> Labels: pull-request-available
> Attachments: Snipaste_2025-07-09_11-28-33.png
>
>
> The definition of return type nullability is different in
> `BuiltInFunctionDefinitions#ENCODE` and `FlinkSqlOperatorTable#ENCODE`. The
> same issue applies to DECODE.
> The test in the attached image will pass, clearly the nullability differs in
> Table API and SQL.
> I think we should unify them to enforce nullable return types. And there may
> exist similar diffs in other functions, though I haven't checked yet.
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