danny0405 opened a new pull request #13291:
URL: https://github.com/apache/flink/pull/13291
… wrong result
The batch mode rank only supports RANK function, so we only rewrite the
stream mode query.
## What is the purpose of the change
Fix the query of pattern:
```sql
SELECT state, name
FROM
(SELECT DISTINCT state FROM cities) states,
LATERAL (
SELECT name, pop
FROM cities
WHERE state = states.state
ORDER BY pop
DESC LIMIT 3
)
```
Before the patch, the query generates a wrong plan then wrong results.
## Brief change log
- Add a new rule `CorrelateSortToRankRule` for the rewrite
- Add plan test and IT test
## Verifying this change
Added tests.
## 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? no
- If yes, how is the feature documented? not documented
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