dianfu opened a new pull request #13304:
URL: https://github.com/apache/flink/pull/13304
## What is the purpose of the change
*This pull request support Expression in the operations of Python Table API*
## Brief change log
- *Update the operations in Table to allow both string and Expression
arguments*
## Verifying this change
- Have updated the existing tests to use Expression.
## 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)`: (no)
- The serializers: (no)
- The runtime per-record code paths (performance sensitive): (no)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: (no)
- The S3 file system connector: (no)
## Documentation
- Does this pull request introduce a new feature? (yes)
- If yes, how is the feature documented? (Will add documentation in a
separate PR)
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