caicancai commented on code in PR #4066:
URL: https://github.com/apache/calcite/pull/4066#discussion_r1861425832
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core/src/main/java/org/apache/calcite/sql2rel/ConvertToChecked.java:
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@@ -50,13 +51,18 @@ public ConvertToChecked(RexBuilder builder) {
* Visitor which rewrites an expression tree such that all
* arithmetic operations that produce numeric values use checked arithmetic.
*/
- static class ConvertRexToChecked extends RexShuttle {
+ class ConvertRexToChecked extends RexShuttle {
private final RexBuilder builder;
ConvertRexToChecked(RexBuilder builder) {
this.builder = builder;
}
+ @Override public RexNode visitSubQuery(RexSubQuery subQuery) {
+ RelNode result = subQuery.rel.accept(ConvertToChecked.this);
+ return subQuery.clone(result);
Review Comment:
why `clone`?
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