sathiyapk commented on a change in pull request #34729:
URL: https://github.com/apache/spark/pull/34729#discussion_r795245399
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/MathExpressionsSuite.scala
##########
@@ -705,6 +818,42 @@ class MathExpressionsSuite extends SparkFunSuite with
ExpressionEvalHelper {
checkEvaluation(BRound(-3.5, 0), -4.0)
checkEvaluation(BRound(-0.35, 1), -0.4)
checkEvaluation(BRound(-35, -1), -40)
+ checkEvaluation(checkDataTypeAndCast(
+ FloorExpressionBuilder.build(Seq(Literal(2.5), Literal(0)))), 2L)
+ checkEvaluation(checkDataTypeAndCast(
+ FloorExpressionBuilder.build(Seq(Literal(3.5), Literal(0)))), 3L)
+ checkEvaluation(checkDataTypeAndCast(
+ FloorExpressionBuilder.build(Seq(Literal(-2.5), Literal(0)))), -3L)
+ checkEvaluation(checkDataTypeAndCast(
+ FloorExpressionBuilder.build(Seq(Literal(-3.5), Literal(0)))), -4L)
+ checkEvaluation(checkDataTypeAndCast(
+ FloorExpressionBuilder.build(Seq(Literal(-0.35), Literal(1)))), -0.4)
+ checkEvaluation(checkDataTypeAndCast(
+ FloorExpressionBuilder.build(Seq(Literal(-35), Literal(-1)))), -40L)
+ checkEvaluation(checkDataTypeAndCast(
+ CeilExpressionBuilder.build(Seq(Literal(2.5), Literal(0)))), 3L)
+ checkEvaluation(checkDataTypeAndCast(
+ CeilExpressionBuilder.build(Seq(Literal(3.5), Literal(0)))), 4L)
+ checkEvaluation(checkDataTypeAndCast(
+ CeilExpressionBuilder.build(Seq(Literal(-2.5), Literal(0)))), -2L)
+ checkEvaluation(checkDataTypeAndCast(
+ CeilExpressionBuilder.build(Seq(Literal(-3.5), Literal(0)))), -3L)
+ checkEvaluation(checkDataTypeAndCast(
+ CeilExpressionBuilder.build(Seq(Literal(-0.35), Literal(1)))), -0.3)
+ checkEvaluation(checkDataTypeAndCast(
+ CeilExpressionBuilder.build(Seq(Literal(-35), Literal(-1)))), -30L)
+ checkEvaluation(checkDataTypeAndCast(
+ FloorExpressionBuilder.build(Seq(Literal(-0.1), Literal(0)))), -1L)
+ checkEvaluation(checkDataTypeAndCast(
+ FloorExpressionBuilder.build(Seq(Literal(5), Literal(0)))), 5L)
+ checkEvaluation(checkDataTypeAndCast(
+ FloorExpressionBuilder.build(Seq(Literal(3.1411), Literal(-3)))), 0L)
+ checkEvaluation(checkDataTypeAndCast(
+ CeilExpressionBuilder.build(Seq(Literal(-0.1), Literal(0)))), 0L)
+ checkEvaluation(checkDataTypeAndCast(
+ CeilExpressionBuilder.build(Seq(Literal(5), Literal(0)))), 5L)
+ checkEvaluation(checkDataTypeAndCast(
+ CeilExpressionBuilder.build(Seq(Literal(3.1411), Literal(-3)))), 1000L)
Review comment:
@cloud-fan Here is the code snippet that evaluates DecimalType at
`RoundBase`. Basically if we assign `s = 0` for the negative scale, then for
`scale < 0`, it will produce the result of `scale = 0`.
```
def nullSafeEval(input1: Any): Any = {
dataType match {
case DecimalType.Fixed(_, s) =>
val decimal = input1.asInstanceOf[Decimal]
// Overflow cannot happen, so no need to control nullOnOverflow
decimal.toPrecision(decimal.precision, s, mode)
...
}
```
I couldn't find any simpler way to deal negative scale with `def inputTypes
= Seq(DecimalType, IntegerType)`. Do you have any other proposals to deal
negative scale, please ? thanks.
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