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Posted to issues@arrow.apache.org by "Andy Grove (JIRA)" <ji...@apache.org> on 2019/02/14 02:44:00 UTC

[jira] [Assigned] (ARROW-4464) [Rust] [DataFusion] Add support for LIMIT

     [ https://issues.apache.org/jira/browse/ARROW-4464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Grove reassigned ARROW-4464:
---------------------------------

    Assignee: Nicolas Trinquier

> [Rust] [DataFusion] Add support for LIMIT
> -----------------------------------------
>
>                 Key: ARROW-4464
>                 URL: https://issues.apache.org/jira/browse/ARROW-4464
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Rust, Rust - DataFusion
>            Reporter: Andy Grove
>            Assignee: Nicolas Trinquier
>            Priority: Major
>             Fix For: 0.13.0
>
>
> As a user, I would like to be able to specify a LIMIT clause on my SQL queries.
> Work involved:
>  * Add Limit to LogicalPlan enum
>  * Write query planner code to translate SQL AST to Limit (SQL parser that we use already supports LIMIT)
>  * Implement LimitRelation (look at filter.rs as a guide since it is quite similar)



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