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https://issues.apache.org/jira/browse/DRILL-3560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14653966#comment-14653966
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Aman Sinha commented on DRILL-3560:
-----------------------------------

I modified the title of this JIRA to be more specific to enhancing partition 
pruning for functions and expressions.  The original description is for the 
base case of dirN = 'value' which works as expected.

> Enhance partition pruning for functions and expressions
> -------------------------------------------------------
>
>                 Key: DRILL-3560
>                 URL: https://issues.apache.org/jira/browse/DRILL-3560
>             Project: Apache Drill
>          Issue Type: New Feature
>          Components: Query Planning & Optimization
>    Affects Versions: 1.1.0
>            Reporter: Stefán Baxter
>            Assignee: Aman Sinha
>         Attachments: table.tar
>
>
> Currently queries that include directory conditions are not optimized at all 
> and the directory expression (dir0 = 'something') is evaluated for every 
> record of every file for every directory.
> This could be optimized to fail directories and allow for the same kind of 
> partition pruning for directories as for other scenarios where data has been 
> partitioned.



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