morrySnow commented on code in PR #10659:
URL: https://github.com/apache/doris/pull/10659#discussion_r915540173
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/Add.java:
##########
@@ -57,6 +57,6 @@ public <R, C> R accept(ExpressionVisitor<R, C> visitor, C
context) {
public String toString() {
- return sql();
+ return left().toString() + ' ' + getArithmeticOperator().toString() +
' ' + right().sql();
Review Comment:
so sleepy
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/Sum.java:
##########
@@ -51,7 +51,7 @@ public DataType getDataType() {
@Override
public boolean nullable() {
- return false;
+ return child().nullable();
Review Comment:
yes
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