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Posted to issues@flink.apache.org by "vinoyang (JIRA)" <ji...@apache.org> on 2019/04/09 02:07:00 UTC

[jira] [Assigned] (FLINK-10049) Unify the processing logic for NULL arguments in SQL built-in functions

     [ https://issues.apache.org/jira/browse/FLINK-10049?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

vinoyang reassigned FLINK-10049:
--------------------------------

    Assignee: vinoyang

> Unify the processing logic for NULL arguments in SQL built-in functions
> -----------------------------------------------------------------------
>
>                 Key: FLINK-10049
>                 URL: https://issues.apache.org/jira/browse/FLINK-10049
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table SQL / API
>            Reporter: Xingcan Cui
>            Assignee: vinoyang
>            Priority: Major
>
> Currently, the built-in functions treat NULL arguments in different ways. E.g., ABS(NULL) returns NULL, while LOG10(NULL) throws an NPE. The general SQL-way of handling NULL values should be that if one argument is NULL the result is NULL. We should unify the processing logic for that.



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