cloud-fan commented on a change in pull request #34729:
URL: https://github.com/apache/spark/pull/34729#discussion_r808207322
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala
##########
@@ -1426,12 +1526,21 @@ abstract class RoundBase(child: Expression, scale:
Expression,
val ce = child.genCode(ctx)
val evaluationCode = dataType match {
- case DecimalType.Fixed(_, s) =>
- s"""
- |${ev.value} = ${ce.value}.toPrecision(${ce.value}.precision(), $s,
- | Decimal.$modeStr(), true);
- |${ev.isNull} = ${ev.value} == null;
- """.stripMargin
+ case DecimalType.Fixed(p, s) =>
+ if (_scale >= 0) {
+ s"""
+ ${ev.value} = ${ce.value}.toPrecision(${ce.value}.precision(), $s,
+ Decimal.$modeStr(), true);
+ ${ev.isNull} = ${ev.value} == null;"""
+ } else {
+ s"""
+ ${ev.value} = ${ce.value}.toPrecision(${ce.value}.precision(), $s,
+ Decimal.$modeStr(), true);
+ ${ev.isNull} = ${ev.value} == null;"""
+// s"""
+// ${ev.value} = new java.math.BigDecimal(${ce.value}).
+// setScale(${_scale}, java.math.BigDecimal.${modeStr});"""
Review comment:
```suggestion
// ${ev.value} = new Decimal(new java.math.BigDecimal(${ce.value}).
// setScale(${_scale}, java.math.BigDecimal.${modeStr}));"""
```
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