danny0405 commented on a change in pull request #1157: [CALCITE-2969] Improve
design of join-like relational expressions
URL: https://github.com/apache/calcite/pull/1157#discussion_r281008385
##########
File path:
core/src/main/java/org/apache/calcite/adapter/enumerable/EnumerableJoinRule.java
##########
@@ -71,26 +71,25 @@
EnumerableRules.LOGGER.debug(e.toString());
return null;
}
+ } else {
+ RelNode newRel;
+ try {
+ newRel = EnumerableHashJoin.create(
+ left,
+ right,
+ info.getEquiCondition(left, right, cluster.getRexBuilder()),
+ join.getVariablesSet(),
+ join.getJoinType());
+ } catch (InvalidRelException e) {
+ EnumerableRules.LOGGER.debug(e.toString());
+ return null;
+ }
+ if (!info.isEqui()) {
+ newRel = new EnumerableFilter(cluster, newRel.getTraitSet(),
+ newRel, info.getRemaining(cluster.getRexBuilder()));
+ }
Review comment:
@rubenada Thx for the analysis, i also have this concern, but Calcite does
not have anti EnumerableXXX yet, without this patch, it is still not supported,
do you think we have the necessity to add an UnsupportedOperationException ? I
kind of curious about how Calcite support an anti join now ? Correct me if i'm
wrong.
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