yujun777 commented on code in PR #44637:
URL: https://github.com/apache/doris/pull/44637#discussion_r1860048448
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/SimplifyRange.java:
##########
@@ -498,41 +494,53 @@ private UnknownValue(ExpressionRewriteContext context,
Expression expr) {
mergeExprOp = null;
}
- public UnknownValue(ExpressionRewriteContext context,
- List<ValueDesc> sourceValues, Expression exprForNonNull,
BinaryOperator<Expression> mergeExprOp) {
- super(context, sourceValues.get(0).reference, exprForNonNull);
+ public UnknownValue(ExpressionRewriteContext context, Expression
toExpr,
+ List<ValueDesc> sourceValues, BinaryOperator<Expression>
mergeExprOp) {
+ super(context, genReference(sourceValues, toExpr), toExpr);
this.sourceValues = ImmutableList.copyOf(sourceValues);
this.mergeExprOp = mergeExprOp;
}
+ private static Expression genReference(List<ValueDesc> sourceValues,
Expression toExpr) {
Review Comment:
> add some comment to explain why need generate reference from `toExpr`
had add comment
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