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https://issues.apache.org/jira/browse/FLINK-3140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15093981#comment-15093981
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ASF GitHub Bot commented on FLINK-3140:
---------------------------------------

Github user fhueske commented on the pull request:

    https://github.com/apache/flink/pull/1465#issuecomment-170934568
  
    Yes, I think so. 
    ATM, the Table API does not allow to access nested fields but only Row 
fields as a whole. So there is no way to define different order for nested 
types. I think we'll keep it like this for now. If we change it at some point, 
we have to touch the code again.


> NULL value data layout in Row Serializer/Comparator
> ---------------------------------------------------
>
>                 Key: FLINK-3140
>                 URL: https://issues.apache.org/jira/browse/FLINK-3140
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API
>            Reporter: Chengxiang Li
>            Assignee: Timo Walther
>
> To store/materialize NULL value in Row objects, we should need new Row 
> Serializer/Comparator which is aware of NULL value fields.



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