HuangXingBo opened a new pull request #10033: 
[FLINK-14021][table-planner][table-planner-blink] Add rules to push down the 
Python ScalarFunctions contained in the join condition of Correlate node
URL: https://github.com/apache/flink/pull/10033
 
 
   ## What is the purpose of the change
   
   *This pr solve the problem that the Python ScalarFunctions contained in the 
join condition of Correlate node should be extracted to make sure the 
TableFunction works well.*
   
   ## Brief change log
   
     - *Add SplitPythonConditionFromCorrelateRule to split python condition in 
correlate*
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
    -*SplitPythonConditionFromCorrelateRuleTest*
   
   ## 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, 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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