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Posted to issues@calcite.apache.org by "Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org> on 2018/11/13 16:06:00 UTC

[jira] [Created] (CALCITE-2668) Support for left/right outer join in RelMdExpressionLineage

Jesus Camacho Rodriguez created CALCITE-2668:
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             Summary: Support for left/right outer join in RelMdExpressionLineage
                 Key: CALCITE-2668
                 URL: https://issues.apache.org/jira/browse/CALCITE-2668
             Project: Calcite
          Issue Type: Improvement
          Components: core
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez


Currently, we bail out in the metadata provider if join operator is not of inner type. For left, right outer joins, we could track expressions generated from columns from the left, right inputs, respectively. In addition, if any of the columns in the join cannot be backtracked, we could still backtrack the origin of an expression if it is not using that column, and currently we bail out too.



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