maropu commented on a change in pull request #25461: [SPARK-28741][SQL]Throw
exceptions when casting to integers causes overflow
URL: https://github.com/apache/spark/pull/25461#discussion_r314982454
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
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@@ -1279,8 +1409,26 @@ case class Cast(child: Expression, dataType: DataType,
timeZoneId: Option[String
(c, evPrim, evNull) => code"$evNull = true;"
case TimestampType =>
(c, evPrim, evNull) => code"$evPrim = (long)
${timestampToIntegerCode(c)};"
+ case DecimalType() if failOnIntegerOverflow =>
+ (c, evPrim, evNull) =>
+ code"""
+ try {
+ $evPrim = $c.toJavaBigInteger().longValueExact();
+ } catch (ArithmeticException e) {
+ throw new ArithmeticException("Casting $c to Long causes
overflow");
Review comment:
oh, my bad. Thx!
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