yujun777 commented on code in PR #45310:
URL: https://github.com/apache/doris/pull/45310#discussion_r1883406908
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/RangeInference.java:
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@@ -461,6 +475,9 @@ public boolean isAnd() {
@Override
public ValueDesc union(ValueDesc other) {
+ if (other instanceof EmptyValue) {
+ return other.union(this);
+ }
Review Comment:
for a given reference, EmptyValue(reference) or UnknownValue(reference),
then it should always evaluate to UnknowValue(referece)
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