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https://issues.apache.org/jira/browse/SPARK-36567?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-36567.
---------------------------------
Fix Version/s: 3.2.0
Resolution: Fixed
Issue resolved by pull request 33816
[https://github.com/apache/spark/pull/33816]
> Support foldable special datetime values in CAST
> ------------------------------------------------
>
> Key: SPARK-36567
> URL: https://issues.apache.org/jira/browse/SPARK-36567
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.2.0
> Reporter: Max Gekk
> Assignee: Max Gekk
> Priority: Major
> Fix For: 3.2.0
>
>
> The PR https://github.com/apache/spark/pull/32714 disallowed special datetime
> values in the CAST expression, and allowed them only in typed literals. So,
> the following code doesn't work anymore:
> {code:sql}
> spark-sql> select date('today');
> NULL
> spark-sql> select cast('today' as date);
> NULL
> {code}
> Though, users can replace them by:
> {code:sql}
> spark-sql> select date'today';
> 2021-08-23
> {code}
> but the changes can break users apps. The purpose of this ticket is to
> support special datetime strings when the strings in casts are foldable.
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