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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