manuzhang opened a new pull request #35519: URL: https://github.com/apache/spark/pull/35519
### What changes were proposed in this pull request? Add doc on restoring loose upcast from string to other types (behavior before 2.4.1) to SQL migration guide. ### Why are the changes needed? After [SPARK-24586](https://issues.apache.org/jira/browse/SPARK-24586), loose upcasting from string to other types are not allowed by default. User can still set `spark.sql.legacy.looseUpcast=true` to restore old behavior but it's not documented. ### Does this PR introduce _any_ user-facing change? No. ### How was this patch tested? Only doc change. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
