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https://issues.apache.org/jira/browse/SPARK-31867?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-31867:
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Assignee: (was: Apache Spark)
> Fix silent data change for datetime formatting
> -----------------------------------------------
>
> Key: SPARK-31867
> URL: https://issues.apache.org/jira/browse/SPARK-31867
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.0.0, 3.1.0
> Reporter: Kent Yao
> Priority: Blocker
>
> {code:java}
> spark-sql> select from_unixtime(1, 'yyyyyyyyyyy-MM-dd');
> NULL
> spark-sql> set spark.sql.legacy.timeParserPolicy=legacy;
> spark.sql.legacy.timeParserPolicy legacy
> spark-sql> select from_unixtime(1, 'yyyyyyyyyyy-MM-dd');
> 00000001970-01-01
> spark-sql>
> {code}
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