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Posted to jira@arrow.apache.org by "Weston Pace (Jira)" <ji...@apache.org> on 2022/09/22 22:25:00 UTC

[jira] [Assigned] (ARROW-17556) [C++] Unbound scan projection expression leads to all fields being loaded

     [ https://issues.apache.org/jira/browse/ARROW-17556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Weston Pace reassigned ARROW-17556:
-----------------------------------

    Assignee: Vibhatha Lakmal Abeykoon  (was: Weston Pace)

> [C++] Unbound scan projection expression leads to all fields being loaded
> -------------------------------------------------------------------------
>
>                 Key: ARROW-17556
>                 URL: https://issues.apache.org/jira/browse/ARROW-17556
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Weston Pace
>            Assignee: Vibhatha Lakmal Abeykoon
>            Priority: Blocker
>             Fix For: 10.0.0
>
>
> If a projection expression is unbound then we should bind it to the (augmented) dataset schema and carry on.  Instead it appears we are interpreting "unbound expression" as "nothing set at all" and loading all fields.



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