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Ruben Quesada Lopez edited comment on CALCITE-2621 at 10/11/18 12:09 PM: ------------------------------------------------------------------------- A possible way to implement this could be generalizing JoinToCorrelateRule with a parameterized constructor to support any sub-class of Join, and not just LogicalJoin (same as JoinToMultiJoinRule), ensuring of course backwards compatibility. Then, the new SemiJoinToCorrelateRule could use this feature. was (Author: rubenql): A possible way to implement this could be generalizing JoinToCorrelateRule with a parameterized constructor to support any sub-class of org.apache.calcite.rel.core.Join, and not just org.apache.calcite.rel.logical.LogicalJoin. Then, the new SemiJoinToCorrelateRule could use this feature. > New rule: SemiJoinToCorrelateRule (SemiJoin => LogicalCorrelate) > ---------------------------------------------------------------- > > Key: CALCITE-2621 > URL: https://issues.apache.org/jira/browse/CALCITE-2621 > Project: Calcite > Issue Type: Improvement > Reporter: Ruben Quesada Lopez > Assignee: Julian Hyde > Priority: Major > Fix For: 1.18.0 > > > Similarly to JoinToCorrelateRule, in some contexts it might be interesting to > transform a SemiJoin into a LogicalCorrelate, for this purpose a > SemiJoinToCorrelateRule will be needed. -- This message was sent by Atlassian JIRA (v7.6.3#76005)