Changgyoo Park created SPARK-50870:
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             Summary: DataSourceV2 relations may contain unresolved cast 
expressions after materializing current_timestamp()
                 Key: SPARK-50870
                 URL: https://issues.apache.org/jira/browse/SPARK-50870
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 4.0.0
            Reporter: Changgyoo Park


current_timestamp() -> materialized as a string.

additional optimizer rules may add cast(string, timestamptype) expressions if 
the current_timestamp() has been pushed down to a DataSourceV2.



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