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https://issues.apache.org/jira/browse/FLINK-1456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14296957#comment-14296957
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Aljoscha Krettek commented on FLINK-1456:
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I don't know if this is really necessary. This should be covered by my work on
expression queries: https://github.com/aljoscha/flink/tree/linq
> Projection to fieldnames, keyselectors
> --------------------------------------
>
> Key: FLINK-1456
> URL: https://issues.apache.org/jira/browse/FLINK-1456
> Project: Flink
> Issue Type: New Feature
> Components: Java API, Streaming
> Affects Versions: 0.9
> Reporter: Márton Balassi
> Assignee: Márton Balassi
>
> The projection operator of both the batch and the streaming APIs only support
> projections with field positions as parameters. I'd like to extend this
> functionality with projection to fieldnames, and keyselectors providing a
> similar API to what groupBy already has.
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