integral_types_decimal_cast_native_support

Author: Bhargava Vadlamani

docs/source/user-guide/latest/compatibility.md

@@ -173,6 +173,7 @@ The following cast operations are generally compatible with Spark except for the
 | integer | long |  |
 | integer | float |  |
 | integer | double |  |
+| integer | decimal |  |
 | integer | string |  |
 | long | boolean |  |
 | long | byte |  |
@@ -227,7 +228,6 @@ The following cast operations are not compatible with Spark for all inputs and a
 <!--BEGIN:INCOMPAT_CAST_TABLE-->
 | From Type | To Type | Notes |
 |-|-|-|
-| integer | decimal  | No overflow check |
 | float | decimal  | There can be rounding differences |
 | double | decimal  | There can be rounding differences |
 | string | float  | Does not support inputs ending with 'd' or 'f'. Does not support 'inf'. Does not support ANSI mode. |

spark/src/main/scala/org/apache/comet/expressions/CometCast.scala

@@ -284,7 +284,7 @@ object CometCast extends CometExpressionSerde[Cast] with CometExprShim {
     case DataTypes.FloatType | DataTypes.DoubleType =>
       Compatible()
     case _: DecimalType =>
-      Incompatible(Some("No overflow check"))
+      Compatible()
     case _ =>
       unsupported(DataTypes.IntegerType, toType)
   }

spark/src/test/scala/org/apache/comet/CometCastSuite.scala

@@ -322,8 +322,7 @@ class CometCastSuite extends CometTestBase with AdaptiveSparkPlanHelper {
     castTest(generateInts(), DataTypes.DoubleType)
   }
 
-  ignore("cast IntegerType to DecimalType(10,2)") {
-    // Comet should have failed with [NUMERIC_VALUE_OUT_OF_RANGE] -1117686336 cannot be represented as Decimal(10, 2)
+  test("cast IntegerType to DecimalType(10,2)") {
     castTest(generateInts(), DataTypes.createDecimalType(10, 2))
   }