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https://issues.apache.org/jira/browse/HAWQ-927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15386817#comment-15386817
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ASF GitHub Bot commented on HAWQ-927:
-------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/incubator-hawq/pull/796


> Send Projection Info Data from HAWQ to PXF
> ------------------------------------------
>
>                 Key: HAWQ-927
>                 URL: https://issues.apache.org/jira/browse/HAWQ-927
>             Project: Apache HAWQ
>          Issue Type: Sub-task
>          Components: External Tables, PXF
>            Reporter: Kavinder Dhaliwal
>            Assignee: Kavinder Dhaliwal
>             Fix For: backlog
>
>
> To achieve column projection at the level of PXF or the underlying readers we 
> need to first send this data as a Header/Param to PXF. Currently, PXF has no 
> knowledge whether a query requires all columns or a subset of columns.



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