adonis0147 commented on code in PR #11299:
URL: https://github.com/apache/doris/pull/11299#discussion_r933724598
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fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/logical/PushPredicateThroughJoin.java:
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@@ -122,15 +121,14 @@ private Plan pushDownPredicate(LogicalJoin<GroupPlan,
GroupPlan> joinPlan,
Expression left = ExpressionUtils.and(leftPredicates);
Expression right = ExpressionUtils.and(rightPredicates);
//todo expr should optimize again using expr rewrite
- ExpressionRuleExecutor exprRewriter = new ExpressionRuleExecutor();
Plan leftPlan = joinPlan.left();
Plan rightPlan = joinPlan.right();
if (!left.equals(BooleanLiteral.TRUE)) {
- leftPlan = new LogicalFilter(exprRewriter.rewrite(left), leftPlan);
+ leftPlan = new LogicalFilter(left, leftPlan);
Review Comment:
The original `ExpressionRuleExecutor` mixes two types of rules, ones are
used for normalization and the others for optimization. In pushing predicates
stage, we don't need to do normalization. This pull request aims at separating
these types of rules. If you think we can apply rules to optimize expressions,
you are welcome to add code to do it.
BTW, the normalization step is moved to
[NereidsPlanner](https://github.com/apache/doris/pull/11299/files#diff-c1663569310d5cae9415d2b9b43196ca09b7761818e456c0b1da9bff5ea75a3c)](https://github.com/apache/doris/pull/11299/files#diff-c1663569310d5cae9415d2b9b43196ca09b7761818e456c0b1da9bff5ea75a3cR124).
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