Github user chenghao-intel commented on a diff in the pull request:
https://github.com/apache/spark/pull/2344#discussion_r17704236
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
---
@@ -177,6 +223,8 @@ case class Cast(child: Expression, dataType: DataType)
extends UnaryExpression {
})
case BooleanType =>
buildCast[Boolean](_, b => if (b) 1.toShort else 0.toShort)
+ case DateType =>
--- End diff --
If `Datetype` can not be casted into `IntegerType` / `ShortType` /
`LongType`, let's remove this, raise exception in `compile` time probably
better than in `runtime`.
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