liwei li created FLINK-27946:
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Summary: Extending SQL syntax in a way similar to
'spark.sql.extensions'
Key: FLINK-27946
URL: https://issues.apache.org/jira/browse/FLINK-27946
Project: Flink
Issue Type: Improvement
Reporter: liwei li
Does Flink consider extending SQL syntax in a similar way to
'spark.sql.extensions'?
This approach provides greater flexibility in adding many new SQL syntax and
rules without modifying the source code, especially in the case of custom
syntax scenarios.
This current provides the following extension points:
* Analyzer Rules.
* Check Analysis Rules.
* Optimizer Rules.
* Pre CBO Rules.
* Planning Strategies.
* Customized Parser.
* (External) Catalog listeners.
* Columnar Rules.
* Adaptive Query Stage Preparation Rules.
FYI：
[https://spark.apache.org/docs/latest/api/scala/org/apache/spark/sql/SparkSessionExtensions.html]
[https://hudi.apache.org/docs/procedures]
[https://iceberg.apache.org/docs/latest/spark-procedures/]
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