seawinde commented on code in PR #55305:
URL: https://github.com/apache/doris/pull/55305#discussion_r2486189501
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fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/mv/PredicatesSplitter.java:
##########
@@ -118,7 +119,11 @@ private static boolean containOnlyColumnRef(Expression
expression, boolean allow
}
if (expression instanceof ElementAt) {
// in RBO rewrite, plan has element at expression
- return containOnlyColumnRef(((ElementAt) expression).child(0),
true);
+ return containOnlyColumnRef(expression.child(0), true);
+ }
+ if (expression instanceof StructElement) {
Review Comment:
During the RBO pre-rewrite phase, expressions may still be written in the
StructElement(a, b)form. This component supoort transparent rewrite
compensation for expressions like StructElement(a, b) > 10.
The CBO post-rewrite phase does not have this issue because the sub-path
information is already contained within the slot.
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