godfreyhe opened a new pull request #10163: [FLINK-14724] [table-planner-blink] 
Join condition could be simplified in logical phase
URL: https://github.com/apache/flink/pull/10163
 
 
   
   ## What is the purpose of the change
   
   *the plan of tpcds q38.sql contains NestedLoopJoin, because it's join 
condition is CAST(AND(IS NOT DISTINCT FROM($2, $3), IS NOT DISTINCT FROM($1, 
$4), IS NOT DISTINCT FROM($0, $5))):BOOLEAN, and planner can't find equal join 
keys from the condition by Join#analyzeCondition. add SimplifyJoinConditionRule 
into logical phase to simplify join condition*
   
   
   ## Brief change log
   
     - *add SimplifyJoinConditionRule into logical phase to simplify join 
condition for batch and stream program*
   
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
   
     - *Added test that validates the plan from sql like tpcds-q38.sql in 
SetOperatorsTest*
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (yes / **no)**
     - The public API, i.e., is any changed class annotated with 
`@Public(Evolving)`: (yes / **no)**
     - The serializers: (yes / **no** / don't know)
     - The runtime per-record code paths (performance sensitive): (yes / **no** 
/ don't know)
     - Anything that affects deployment or recovery: JobManager (and its 
components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know)
     - The S3 file system connector: (yes / **no** / don't know)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (yes / **no)**
     - If yes, how is the feature documented? (not applicable / docs / JavaDocs 
/ **not documented**)
   

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