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https://issues.apache.org/jira/browse/SPARK-22478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-22478.
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Resolution: Duplicate
> Spark - Truncate date by Day / Hour
> ------------------------------------
>
> Key: SPARK-22478
> URL: https://issues.apache.org/jira/browse/SPARK-22478
> Project: Spark
> Issue Type: New Feature
> Components: Spark Core
> Affects Versions: 2.2.0
> Reporter: david hodeffi
> Priority: Trivial
>
> Currently it is possible to truncate date/timestamp only by month or year,
> There is a missing functionality to truncate by hour/day.
> A usecase that requires this functionality is: Aggregating financial
> transaction of a party in order to create daily/hour summary.
> Those summaries are required for machine learning algorithms.
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