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Posted to issues@calcite.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2015/10/12 18:59:05 UTC

[jira] [Created] (CALCITE-918) createProject in RelOptUtil should uniquify fields

Jesus Camacho Rodriguez created CALCITE-918:
-----------------------------------------------

             Summary: createProject in RelOptUtil should uniquify fields
                 Key: CALCITE-918
                 URL: https://issues.apache.org/jira/browse/CALCITE-918
             Project: Calcite
          Issue Type: Bug
    Affects Versions: 1.4.0-incubating
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez
             Fix For: 1.5.0-incubating


The method

{code} 
public static RelNode createProject(
      final RelFactories.ProjectFactory factory,
      final RelNode child, final List<Integer> posList)
{code}
in RelOptUtil should uniquify fields before creating the Project operator. Otherwise, we might end up hitting an assertion in the Project constructor. This behavior was observed using the AggregateProjectMergeRule rule.



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