Manu Zhang created SPARK-38211:
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Summary: Add SQL migration guide on preserving loose upcast
Key: SPARK-38211
URL: https://issues.apache.org/jira/browse/SPARK-38211
Project: Spark
Issue Type: Improvement
Components: Documentation
Affects Versions: 3.2.1
Reporter: Manu Zhang
After SPARK-24586, loose upcasting from string to other types are not allowed
by default. User can still set {{spark.sql.legacy.looseUpcast=true}} to
preserve old behavior but it's not documented in the SQL migration guide.
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