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  1. Calcite
  2. CALCITE-2668

Support for left/right outer join in RelMdExpressionLineage

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.18.0
    • Component/s: core
    • Labels:
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      Description

      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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            • Assignee:
              jcamachorodriguez Jesus Camacho Rodriguez
              Reporter:
              jcamachorodriguez Jesus Camacho Rodriguez
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