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Posted to issues@spark.apache.org by "Wenchen Fan (Jira)" <ji...@apache.org> on 2019/10/18 15:57:00 UTC
[jira] [Resolved] (SPARK-28420) Date/Time Functions: date_part for
intervals
[ https://issues.apache.org/jira/browse/SPARK-28420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wenchen Fan resolved SPARK-28420.
---------------------------------
Fix Version/s: 3.0.0
Resolution: Fixed
Issue resolved by pull request 25981
[https://github.com/apache/spark/pull/25981]
> Date/Time Functions: date_part for intervals
> --------------------------------------------
>
> Key: SPARK-28420
> URL: https://issues.apache.org/jira/browse/SPARK-28420
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Yuming Wang
> Assignee: Yuming Wang
> Priority: Major
> Fix For: 3.0.0
>
>
> ||Function||Return Type||Description||Example||Result||
> |{{date_part(}}{{text}}{{, }}{{interval}}{{)}}|{{double precision}}|Get subfield (equivalent to {{extract}}); see [Section 9.9.1|https://www.postgresql.org/docs/11/functions-datetime.html#FUNCTIONS-DATETIME-EXTRACT]|{{date_part('month', interval '2 years 3 months')}}|{{3}}|
> We can replace it with {{extract(field from timestamp)}}.
> https://www.postgresql.org/docs/11/functions-datetime.html
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