[jira] [Created] (CALCITE-3937) Only fire rule for RelSubset when it is derived

[Haisheng Yuan (Jira)]

Haisheng Yuan created CALCITE-3937:
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             Summary: Only fire rule for RelSubset when it is derived 
                 Key: CALCITE-3937
                 URL: https://issues.apache.org/jira/browse/CALCITE-3937
             Project: Calcite
          Issue Type: Improvement
          Components: core
            Reporter: Haisheng Yuan


It is meaningless to fire rule for RelSubset when it is generated by parent's 
trait requirement.



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