danny0405 edited a comment on issue #1157: [CALCITE-2969] Improve design of join-like relational expressions URL: https://github.com/apache/calcite/pull/1157#issuecomment-490381828 > hi @danny0405, `RelDecorrelator` does not handle `SemiJoin` before, which is handled by `Frame decorrelateRel(RelNode rel)` method. I think, `Frame decorrelateRel(LogicalJoin rel)` should handle SEMI join now. Thx @godfreyhe I think you are right, we do not support decorreate a SemiJoin with correlated variables yet, so i just routing the SemiJoin decorrelation to `RelDecorrelator#decorrelateRel(RelNode rel)`
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