morrySnow commented on code in PR #19811:
URL: https://github.com/apache/doris/pull/19811#discussion_r1209770292
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/Divide.java:
##########
@@ -62,14 +63,15 @@ public DataType getDataType() throws UnboundException {
@Override
public DecimalV3Type getDataTypeForDecimalV3(DecimalV3Type t1,
DecimalV3Type t2) {
int retPercision = t1.getPrecision() + t2.getScale();
Review Comment:
percision should also update with div_precision_increment
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/Divide.java:
##########
@@ -62,14 +63,15 @@ public DataType getDataType() throws UnboundException {
@Override
public DecimalV3Type getDataTypeForDecimalV3(DecimalV3Type t1,
DecimalV3Type t2) {
int retPercision = t1.getPrecision() + t2.getScale();
- int retScale = t1.getScale();
+ int retScale = t1.getScale() + t2.getScale()
+ + Config.div_precision_increment;
Review Comment:
should be the first argument scale + div_precision_increment ?
```suggestion
int retScale = t1.getScale() + Config.div_precision_increment;
```
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/Divide.java:
##########
@@ -62,14 +63,15 @@ public DataType getDataType() throws UnboundException {
@Override
public DecimalV3Type getDataTypeForDecimalV3(DecimalV3Type t1,
DecimalV3Type t2) {
int retPercision = t1.getPrecision() + t2.getScale();
- int retScale = t1.getScale();
+ int retScale = t1.getScale() + t2.getScale()
+ + Config.div_precision_increment;
Review Comment:
use a session variable maybe better?
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