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https://issues.apache.org/jira/browse/SPARK-48472?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan reassigned SPARK-48472:
-----------------------------------

    Assignee: Mihailo Milosevic

> Enable reflect expressions with collated strings
> ------------------------------------------------
>
>                 Key: SPARK-48472
>                 URL: https://issues.apache.org/jira/browse/SPARK-48472
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 4.0.0
>            Reporter: Mihailo Milosevic
>            Assignee: Mihailo Milosevic
>            Priority: Major
>              Labels: pull-request-available
>
> As a movement to collated world, we need to make sure all expressions are 
> supported by appropriate collations. Using expression walker testing 
> `CallMethodViaReflection` was found to be erroneous. This expression is used 
> as a replacement for all reflection methods and needs to be improved. This 
> ticket needs to update methods of this expression. Relevant code could be 
> found in these files: `CallMethodViaReflection.scala`, `TypeCoercion.scala`, 
> `AnsiTypeCoercion.scala`, `CollationTypeCasts.scala`, and for testing 
> `Collation*Suite.scala` files.



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