twalthr opened a new pull request #15551:
URL: https://github.com/apache/flink/pull/15551
## What is the purpose of the change
Ports the most important agg functions of the Table API to the new type
system and removes the legacy planner expressions for those. Table API
functions now behave exactly like SQL functions.
## Brief change log
See commit messages.
The following functions have been updated: avg, sum, sum0, count, min, max,
stddevPop/Samp, varPop/Samp
## Verifying this change
This change is already covered by existing tests, such as `DecimalITCase`.
## 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
- 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 applicable
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