xy2953396112 opened a new pull request #1619: [CALCITE-3537] Normalize 
materialize view in SubstitutionVisitor
URL: https://github.com/apache/calcite/pull/1619
 
 
   ..this pr try to  fix some problems. 
   And add ProjectAggregateTransposeRule, this rule is used for normalize 
materialized view. the top LogicalCalc is not taken into consideration by 
current implementation of SubstitutionVisitor;
   a example such as:
   query:
          Aggregate
                 Calc
                      Scan
   mv:
         Calc
             Aggregate
                Calc
                     Scan
   
   and transfer mv to :
        Aggregate
                Calc
                     Scan
   
   JIRA:https://issues.apache.org/jira/browse/CALCITE-3537

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