xiong duan created CALCITE-6649:
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             Summary: Enhance RelMdPredicates pull up predicate from PROJECT
                 Key: CALCITE-6649
                 URL: https://issues.apache.org/jira/browse/CALCITE-6649
             Project: Calcite
          Issue Type: Bug
            Reporter: xiong duan


{code:java}
select comm = 2 from emp where comm = 2 can pull up =($0, true)
select comm = 3 from emp where comm = 2 can pull up =($0, false)
select comm = 2 from emp where comm = 2 and empno = 1 can pull up =($0, true)
select comm = 2  empno = 1 and from emp where comm = 2 and empno = 1 can pull 
up =($0, true)
Now the pull up predicate is nothing. {code}



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