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https://issues.apache.org/jira/browse/FLINK-5177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17334296#comment-17334296
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Flink Jira Bot commented on FLINK-5177:
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This issue was marked "stale-assigned" and has not received an update in 7
days. It is now automatically unassigned. If you are still working on it, you
can assign it to yourself again. Please also give an update about the status of
the work.
> Improve nullability handling
> -----------------------------
>
> Key: FLINK-5177
> URL: https://issues.apache.org/jira/browse/FLINK-5177
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / API
> Reporter: Timo Walther
> Assignee: Timo Walther
> Priority: Major
> Labels: stale-assigned
>
> Currently, all fields of the Table API are marked as nullable by default. A
> lot of null checking could be avoided if we would properly handle
> nullability. Fields of tuples and POJOs with primitive fields can not be
> null. Elements of primitive arrays too. It also includes parameters and
> return types of user-defined scalar, table, and aggregate functions.
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