JingsongLi opened a new pull request #8978: [FLINK-13089][table-planner-blink] Implement batch nested loop join in blink URL: https://github.com/apache/flink/pull/8978 ## What is the purpose of the change Nested loop join has two advantages: 1.Nested loop join is quicker when build row size is small. 2.Nested loop join support all kind of joins, include non-key join. ## Brief change log Introduce NestedLoopJoinCodeGenerator. Implement BatchExecNestedLoopJoin. Add join it cases. ## Verifying this change it cases ## Documentation - Does this pull request introduce a new feature? (yes) - If yes, how is the feature documented? (JavaDocs)
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