chunweilei commented on a change in pull request #1247: [CALCITE-3089]
Deprecate EquiJoin
URL: https://github.com/apache/calcite/pull/1247#discussion_r299385352
##########
File path:
core/src/main/java/org/apache/calcite/adapter/enumerable/EnumerableJoinRule.java
##########
@@ -58,35 +58,26 @@
final RelNode right = newInputs.get(1);
final JoinInfo info = JoinInfo.of(left, right, join.getCondition());
if (!info.isEqui() && join.getJoinType() != JoinRelType.INNER) {
- // EnumerableJoinRel only supports equi-join. We can put a filter on top
+ // EnumerableHashJoin only supports equi-join. We can put a filter on top
// if it is an inner join.
- try {
- return EnumerableNestedLoopJoin.create(
- left,
- right,
- join.getCondition(),
- join.getVariablesSet(),
- join.getJoinType());
- } catch (InvalidRelException e) {
- EnumerableRules.LOGGER.debug(e.toString());
- return null;
- }
+ return EnumerableNestedLoopJoin.create(
+ left,
+ right,
+ join.getCondition(),
+ join.getVariablesSet(),
+ join.getJoinType());
} 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 = EnumerableHashJoin.create(
+ left,
+ right,
+ info.getEquiCondition(left, right, cluster.getRexBuilder()),
+ join.getVariablesSet(),
+ join.getJoinType());
+ RexNode nonEqui = info.getRemaining(cluster.getRexBuilder());
+ if (!nonEqui.isAlwaysTrue()) {
Review comment:
This check is necessary. But I prefer use` !info.isEqui()` since it is more
clear?.
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