[jira] [Commented] (ARROW-12391) [Rust][DataFusion] Implement date_trunc() function

["Andrew Lamb (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-12391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17332410#comment-17332410 ] 

Andrew Lamb commented on ARROW-12391:
-------------------------------------

Migrated to github: https://github.com/apache/arrow-datafusion/issues/203

> [Rust][DataFusion] Implement date_trunc() function
> --------------------------------------------------
>
>                 Key: ARROW-12391
>                 URL: https://issues.apache.org/jira/browse/ARROW-12391
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: Rust - DataFusion
>    Affects Versions: 3.0.0
>            Reporter: Evan Chan
>            Priority: Major
>             Fix For: 5.0.0
>
>
> Implement the date_trunc function, as described in this PostGres manual:
> [https://www.postgresql.org/docs/current/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC]
>  
> This would allow for the following use cases to be solved:
>  * casting of timestamps to other resolutions, such as millis and micros
>  * rounding dates/timestamps 
> It also allows the user to explicitly allow the truncation of timestamp precision.



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