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https://issues.apache.org/jira/browse/SPARK-31528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17091173#comment-17091173
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Hyukjin Kwon commented on SPARK-31528:
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PR: https://github.com/apache/spark/pull/28313
> Remove millennium, century, decade from trunc/date_trunc fucntions
> -------------------------------------------------------------------
>
> Key: SPARK-31528
> URL: https://issues.apache.org/jira/browse/SPARK-31528
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0, 3.1.0
> Reporter: Kent Yao
> Priority: Major
>
> Same as #SPARK-31507, millennium, century, and decade are not commonly used
> in most modern platforms.
> for example
> Negative:
> https://docs.snowflake.com/en/sql-reference/functions-date-time.html#supported-date-and-time-parts
> https://prestodb.io/docs/current/functions/datetime.html#date_trunc
> https://teradata.github.io/presto/docs/148t/functions/datetime.html#date_trunc
> https://www.oracletutorial.com/oracle-date-functions/oracle-trunc/
> Positive:
> https://docs.aws.amazon.com/redshift/latest/dg/r_Dateparts_for_datetime_functions.html
> https://www.postgresql.org/docs/9.1/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC
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