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https://issues.apache.org/jira/browse/SPARK-31119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kent Yao updated SPARK-31119:
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Issue Type: Improvement (was: Bug)
> Add interval value support for extract expression as source
> -----------------------------------------------------------
>
> Key: SPARK-31119
> URL: https://issues.apache.org/jira/browse/SPARK-31119
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.0.0, 3.1.0
> Reporter: Kent Yao
> Priority: Major
>
> {code:java}
> <extract expression> ::= EXTRACT <left paren> <extract field> FROM <extract
> source> <right paren>
> <extract source> ::= <datetime value expression> | <interval value expression>
> {code}
> We now only support datetime values as extract source for expression but it's
> alternative function `date_part` supports both datetime and interval.
> For ANSI compliance and the consistency between extract and `date_part`, we
> support intervals for extract expressions.
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