slinkydeveloper opened a new pull request #18524: URL: https://github.com/apache/flink/pull/18524
## What is the purpose of the change The goal of this PR is to allow performing casting to string of complex types ## Brief change log * Add patched `SqlTypeUtil` from calcite. This is required as calcite extension point for casting rules (see `SqlTypeCoercionRule`) is limited to atomic types. For constructed types, the logic is still hardcoded in `SqlTypeUtil`. This is the diff of my patched `SqlTypeUtil`:  * Add test cases ## Verifying this change Added test cases ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): no - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: yes ## Documentation - Does this pull request introduce a new feature? yes - If yes, how is the feature documented? not documented -- 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]
