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https://issues.apache.org/jira/browse/SPARK-47972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mihailo Milosevic updated SPARK-47972:
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Description: Current state of code allows for calls like CAST(1 AS STRING
COLLATE UNICODE). We want to restrict CAST expression to only be able to cast
to default collation string, and to only allow COLLATE expression to produce
explicitly collated strings.
> Restrict CAST expression for collations
> ---------------------------------------
>
> Key: SPARK-47972
> URL: https://issues.apache.org/jira/browse/SPARK-47972
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 4.0.0
> Reporter: Mihailo Milosevic
> Priority: Major
>
> Current state of code allows for calls like CAST(1 AS STRING COLLATE
> UNICODE). We want to restrict CAST expression to only be able to cast to
> default collation string, and to only allow COLLATE expression to produce
> explicitly collated strings.
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