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Posted to jira@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2021/09/27 14:45:00 UTC

[jira] [Resolved] (ARROW-13549) [C++] Implement timestamp to date/time cast that extracts value

     [ https://issues.apache.org/jira/browse/ARROW-13549?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou resolved ARROW-13549.
------------------------------------
    Resolution: Fixed

Issue resolved by pull request 10933
[https://github.com/apache/arrow/pull/10933]

> [C++] Implement timestamp to date/time cast that extracts value
> ---------------------------------------------------------------
>
>                 Key: ARROW-13549
>                 URL: https://issues.apache.org/jira/browse/ARROW-13549
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: David Li
>            Assignee: David Li
>            Priority: Major
>              Labels: kernel, pull-request-available
>             Fix For: 6.0.0
>
>          Time Spent: 4h 40m
>  Remaining Estimate: 0h
>
> Change casting from timestamp to date/time to extract the value, instead of just truncating as we currently do (which rounds, giving incorrect answers, in some cases). This should also be a safe cast by default (unless you want to do something like cast from timestamp[ns] to time32[s] which may overflow).
> This should behave like Postgres DATE/CAST(... as TIME), or Pandas Timestamp.date/Timestamp.time.



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