[jira] [Resolved] (SPARK-37163) Disallow casting Date as Numeric types

["Gengliang Wang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-37163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gengliang Wang resolved SPARK-37163.
------------------------------------
    Resolution: Won't Do

> Disallow casting Date as Numeric types
> --------------------------------------
>
>                 Key: SPARK-37163
>                 URL: https://issues.apache.org/jira/browse/SPARK-37163
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.3.0
>            Reporter: Gengliang Wang
>            Assignee: Gengliang Wang
>            Priority: Major
>
> Currently, Date type values can be cast as Numeric types. However, the result is always NULL.
> On the other hand, Numeric values can't be cast as Date type.
> It doesn't make sense to keep the behavior of casting Date to null numeric types. I suggest to disallow the conversion. We can have a legacy flag `spark.sql.legacy.allowCastDateAsNumeric` if users really want to fall back to the legacy behavior.



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