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https://issues.apache.org/jira/browse/SPARK-23906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16853733#comment-16853733
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Yuming Wang commented on SPARK-23906:
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PostgreSQL has two functions: {{trunc}} and {{date_trunc}}. Maybe we need to
merge {{TruncDate}} and {{TruncTimestamp}} into date_trunc and make {{trunc}}
to support truncate numbers.
[https://www.postgresql.org/docs/11/functions-math.html]
[https://www.postgresql.org/docs/11/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC]
> Add UDF trunc(numeric)
> ----------------------
>
> Key: SPARK-23906
> URL: https://issues.apache.org/jira/browse/SPARK-23906
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Xiao Li
> Assignee: Yuming Wang
> Priority: Major
>
> https://issues.apache.org/jira/browse/HIVE-14582
> We already have {{date_trunc}} and {{trunc}}. Need to discuss whether we
> should introduce a new name or reuse {{trunc}} for truncating numbers.
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