feiniaofeiafei commented on code in PR #56942:
URL: https://github.com/apache/doris/pull/56942#discussion_r2451495608
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/ExprIdRewriter.java:
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@@ -100,7 +105,43 @@ public List<ExpressionPatternMatcher<? extends
Expression>> buildRules() {
lastId = newId;
}
}
- }).toRule(ExpressionRuleType.EXPR_ID_REWRITE_REPLACE)
+ }).toRule(ExpressionRuleType.EXPR_ID_REWRITE_REPLACE),
+ matchesType(VirtualSlotReference.class).thenApply(ctx -> {
+ VirtualSlotReference virtualSlot = ctx.expr;
+ Optional<GroupingScalarFunction> originExpression =
virtualSlot.getOriginExpression();
+ if (!originExpression.isPresent()) {
+ return virtualSlot;
+ }
+ List<Expression> newChildren = new ArrayList<>();
+ List<Expression> oldChildren =
originExpression.get().children();
+ for (Expression child : oldChildren) {
Review Comment:
1. directly traverse the originExpression instead of using for loop
traversing originExpression children maybe better.
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