[ https://issues.apache.org/jira/browse/CALCITE-2968?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated CALCITE-2968: ------------------------------------ Labels: pull-request-available (was: ) > New AntiJoin relational expression > ---------------------------------- > > Key: CALCITE-2968 > URL: https://issues.apache.org/jira/browse/CALCITE-2968 > Project: Calcite > Issue Type: New Feature > Reporter: Ruben Quesada Lopez > Assignee: Ruben Quesada Lopez > Priority: Major > Labels: pull-request-available > > The goal of this ticket is to follow the discussion started in CALCITE-2920 > (and its [PR|https://github.com/apache/calcite/pull/1110]). > With the implementation of CALCITE-2920, RelBuilder has now a method to > create an AntiJoin. However, since, for the moment, there is no "AntiJoin" > expression, the only possibility to build an AntiJoin is using a > LogicalCorrelate with SemiJoinType.ANTI, and that's exactly what this method > does, for now. > The idea would be to "generalize" this with the creation of a new AntiJoin > (a.k.a. AntiSemiJoin) relational expression. With the implementation of > CALCITE-2969 (re-design of join-like expressions), it seems clear that the > new AntiJoin expression will be a *LogicalJoin with JoinType=ANTI*. Also, it > will have to be verified that: > - this new AntiJoin works fine in EnumerableConvention with all types of join > condition (equi-join, partial equi-join, non equi-join) > - this new AntiJoin can be correctly transformed into a Correlate (type ANTI) > via JoinToCorrelateRule -- This message was sent by Atlassian JIRA (v7.6.3#76005)