[jira] [Created] (CALCITE-4734) Materialization-Failed, when meeting same projs in mv.

["Xurenhe (Jira)" <ji...@apache.org>]

Xurenhe created CALCITE-4734:
--------------------------------

             Summary: Materialization-Failed, when meeting same projs in mv.
                 Key: CALCITE-4734
                 URL: https://issues.apache.org/jira/browse/CALCITE-4734
             Project: Calcite
          Issue Type: Bug
          Components: core
            Reporter: Xurenhe
         Attachments: image-2021-08-13-11-43-54-035.png, image-2021-08-13-11-44-09-504.png

Some user may define some not beautiful mv, but these mv should be worked for rewriting query.
For example:

{code:java}
  @Test void testMoreSameExprInMv() {
    final String mv = ""
        + "select \"empid\", \"deptno\", sum(\"empid\") as s1, sum(\"empid\") as s2, count(*) as c\n"
        + "from \"emps\" group by \"empid\", \"deptno\"";
    final String query = ""
        +  "select sum(\"empid\"), count(*) from \"emps\" group by \"empid\", \"deptno\"";
    sql(mv, query).ok();
  }
{code}

I try debug code to solve this problem.
I find some bug in 
{code:java}
org.apache.calcite.plan.SubstitutionVisitor#getRexShuttle
{code}
 !image-2021-08-13-11-43-54-035.png|thumbnail! 
 !image-2021-08-13-11-44-09-504.png|thumbnail! 




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