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_r314964935
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
##########
@@ -475,7 +478,16 @@ case class Cast(child: Expression, dataType: DataType,
timeZoneId: Option[String
case DateType =>
buildCast[Int](_, d => null)
case TimestampType =>
- buildCast[Long](_, t => timestampToLong(t).toInt)
+ buildCast[Long](_, t => {
Review comment:
How about this? (I think we can fix the other patterns too in the same way
```
if (failOnIntegerOverflow) {
buildCast[Long](_, t => timestampToLong(t).toInt)
} else {
buildCast[Long](_, t => LongExactNumeric.toInt(timestampToLong(t)))
}
```
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