CALCITE-3783 fixed PruneEmptyRules#JOIN_RIGHT_INSTANCE for join type ANTI:
Join(Scan(Emp), Empty, ANTI) becomes Scan(Emp)
However, it performs this transformation only in case of anti equi-join (in case of non-equi, no transformation is made).
Re-considering this, I believe this is a mistake, and the transformation can always be performed, independently of the join condition (equi / non-equi, it does not matter).
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CALCITE-3783 PruneEmptyRules#JOIN_RIGHT_INSTANCE wrong behavior for JoinRelType.ANTI
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- Closed
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