ferenc-csaky opened a new pull request, #29102:
URL: https://github.com/apache/flink/pull/29102
## What is the purpose of the change
Makes the operation column in `TO_CHANGELOG` optional. This supports
append-only output that retains the input schema without prepending an
operation code.
## Brief change log
- Adds optional `include_op_column` argument to `TO_CHANGELOG`, defaulting
to `true`.
- Omits the operation column from inferred and runtime output when set to
`false`.
- Adds type-inference and semantic test coverage.
- Documents the new argument in SQL documentation and Table API JavaDocs.
## Verifying this change
This change added tests and was verified with:
- `mvn -pl flink-table/flink-table-common
-Dtest=ToChangelogOutputTypeStrategyTest test`
- `mvn -pl flink-table/flink-table-planner -Dtest=ToChangelogSemanticTests
test`
- `mvn spotless:check -pl
flink-table/flink-table-common,flink-table/flink-table-runtime,flink-table/flink-table-api-java,flink-table/flink-table-planner`
## 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, adds a user-facing `TO_CHANGELOG` argument
- 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, 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? docs + JavaDocs
##### Was generative AI tooling used to co-author this PR?
- [X] Yes
Generated-by: OpenCode (openai/gpt-5.6-terra)
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