jackwener commented on code in PR #12497:
URL: https://github.com/apache/doris/pull/12497#discussion_r966614018
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fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/logical/PushPredicateThroughJoin.java:
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@@ -114,22 +113,12 @@ public Rule build() {
private Plan pushDownPredicate(LogicalJoin<GroupPlan, GroupPlan> joinPlan,
List<Expression> joinConditions, List<Expression> leftPredicates,
List<Expression> rightPredicates) {
-
- Expression left = ExpressionUtils.and(leftPredicates);
- Expression right = ExpressionUtils.and(rightPredicates);
- //todo expr should optimize again using expr rewrite
- Plan leftPlan = joinPlan.left();
- Plan rightPlan = joinPlan.right();
- if (!left.equals(BooleanLiteral.TRUE)) {
- leftPlan = new LogicalFilter<>(left, leftPlan);
- }
-
- if (!right.equals(BooleanLiteral.TRUE)) {
- rightPlan = new LogicalFilter<>(right, rightPlan);
- }
+ // todo expr should optimize again using expr rewrite
+ Plan leftPlan = PlanUtils.filterOrSelf(leftPredicates,
joinPlan.left());
+ Plan rightPlan = PlanUtils.filterOrSelf(rightPredicates,
joinPlan.right());
Review Comment:
When `BooleanLiteral.TRUE`, it means that `leftPredicates` is empty, so we
will return self.
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