L. C. Hsieh created SPARK-49787:
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Summary: Cast between UDT and other types
Key: SPARK-49787
URL: https://issues.apache.org/jira/browse/SPARK-49787
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 4.0.0
Reporter: L. C. Hsieh
Our customer faced an error when migrating queries that write UDT column from
Hive to Iceberg table.
The error happens when Spark tries to cast UDT column to the data type (i.e.,
the sql type of the UDT) of the table column. The cast is added by table column
resolution rule for V2 writing commands.
Currently `Cast` expression doesn't support casting between UDT and other types.
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