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[SPARK-12274][SQL] WrapOption should not have type constraint for child #10263

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[SPARK-12274][SQL] WrapOption should not have type constraint for child #10263

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5 changes: 1 addition & 4 deletions sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -296,15 +296,12 @@ case class UnwrapOption(
* (in the case of reference types) equality with null.
* @param child The expression to evaluate and wrap.
*/
case class WrapOption(child: Expression)
extends UnaryExpression with ExpectsInputTypes {
case class WrapOption(child: Expression) extends UnaryExpression {

override def dataType: DataType = ObjectType(classOf[Option[_]])

override def nullable: Boolean = true

override def inputTypes: Seq[AbstractDataType] = ObjectType :: Nil

override def eval(input: InternalRow): Any =
throw new UnsupportedOperationException("Only code-generated evaluation is supported")

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