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https://issues.apache.org/jira/browse/FLINK-5698?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15926430#comment-15926430
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ASF GitHub Bot commented on FLINK-5698:
---------------------------------------

Github user tonycox commented on the issue:

    https://github.com/apache/flink/pull/3269
  
    Hi @fhueske I've addressed all comments


> Add NestedFieldsProjectableTableSource interface
> ------------------------------------------------
>
>                 Key: FLINK-5698
>                 URL: https://issues.apache.org/jira/browse/FLINK-5698
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table API & SQL
>            Reporter: Anton Solovev
>            Assignee: Anton Solovev
>
> Add a NestedFieldsProjectableTableSource interface for some TableSource 
> implementation that support nesting projection push-down.
> The interface could look as follows
> {code}
> def trait NestedFieldsProjectableTableSource {
>   def projectNestedFields(fields: Array[String]): 
> NestedFieldsProjectableTableSource[T]
> }
> {code}
> This interface works together with ProjectableTableSource 



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