himadripal commented on code in PR #1086:
URL: https://github.com/apache/datafusion-comet/pull/1086#discussion_r1845241526
##########
spark/src/test/scala/org/apache/comet/CometCastSuite.scala:
##########
@@ -895,6 +895,18 @@ class CometCastSuite extends CometTestBase with
AdaptiveSparkPlanHelper {
}
}
+ test("cast between decimals with different precision and scale") {
+ // cast between default Decimal(38, 18) to Decimal(9,1)
+ val values = Seq(BigDecimal("12345.6789"), BigDecimal("9876.5432"),
BigDecimal("123.4567"))
+ val df = withNulls(values).toDF("a")
+ castTest(df, DataTypes.createDecimalType(7, 2))
Review Comment:
This is the result of the test with (6,2) -
```scala
== Results ==
!== Correct Answer - 4 == == Spark Answer - 4 ==
struct<a:decimal(38,18),a:decimal(6,2)>
struct<a:decimal(38,18),a:decimal(6,2)>
[null,null] [null,null]
[123.456700000000000000,123.46] [123.456700000000000000,123.46]
[9876.543200000000000000,9876.54] [9876.543200000000000000,9876.54]
![12345.678900000000000000,null]
[12345.678900000000000000,12345.68]
```
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