beyond1920 opened a new pull request #17205:
URL: https://github.com/apache/flink/pull/17205
## What is the purpose of the change
This pr aims to update `MATCH_ROWTIME` function. After update,
`MATCH_ROWTIME` function could receive no operand or one operand which is a
field reference with row time attribute. If there is no operand, the function
returns row time attribute with TIMESTAMP. Else, return type is same with
operand type.
## Brief change log
- Add `MatchRowTimeFunction` class to do operand checker and return type
inference.
- Update `FlinkSqlOperatorTable` to use `MatchRowTimeFunction`
- Add validate in `FlinkLogicalMatch` to check `MATCH_ROWTIME()` could
only be used when input stream does not contain row time attribute with
TIMESTAMP_LTZ type.
- Simplify `RelTimeIndicatorConverter` because it does not need to take
`MATCH_ROWTIME()` type infer and propagation into consideration.
## Verifying this change
- Add UT in `MatchRecognizeTest`
- Fix wrong results of ITCase:
`MatchRecognizeITCase#testWindowedGroupingAppliedToMatchRecognizeOnLtzRowtime`
## 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, ZooKeeper: (no)
- The S3 file system connector: (no )
## Documentation
- Does this pull request introduce a new feature? (no)
- If yes, how is the feature documented? (not applicable)
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