Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/22063#discussion_r212393299
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/expressions/UserDefinedFunction.scala
---
@@ -40,7 +40,14 @@ import org.apache.spark.sql.types.DataType
case class UserDefinedFunction protected[sql] (
f: AnyRef,
dataType: DataType,
- inputTypes: Option[Seq[DataType]]) {
+ inputTypes: Option[Seq[DataType]],
+ nullableTypes: Option[Seq[Boolean]] = None) {
--- End diff --
I was hoping to minimize the change in the signature, but yeah it could be
`Option[Seq[(DataType, Boolean)]]`?
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