sohardforaname commented on code in PR #18209:
URL: https://github.com/apache/doris/pull/18209#discussion_r1189467966
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/FoldConstantRuleOnFE.java:
##########
@@ -287,23 +295,31 @@ public Expression visitCast(Cast cast,
ExpressionRewriteContext context) {
@Override
public Expression visitBoundFunction(BoundFunction boundFunction,
ExpressionRewriteContext context) {
+ boundFunction = rewriteChildren(boundFunction, context);
//functions, like current_date, do not have arg
if (boundFunction.getArguments().isEmpty()) {
return boundFunction;
}
- if (!ExpressionUtils.isAllLiteral(boundFunction.getArguments())) {
- return boundFunction;
+ Optional<Expression> checkedExpr = checkNeedCalculate(boundFunction);
+ if (checkedExpr.isPresent()) {
+ return checkedExpr.get();
}
return ExpressionEvaluator.INSTANCE.eval(boundFunction);
}
@Override
public Expression visitBinaryArithmetic(BinaryArithmetic binaryArithmetic,
ExpressionRewriteContext context) {
+ binaryArithmetic = rewriteChildren(binaryArithmetic, context);
+ Optional<Expression> checkedExpr =
checkNeedCalculate(binaryArithmetic);
Review Comment:
no, the checkNeedCalculate() means that if the binary arithmetic is no need
to be fold, we return an option contain the expression and return, otherwise we
fold the expression
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