Github user maropu commented on a diff in the pull request: https://github.com/apache/spark/pull/17712#discussion_r112800829 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/expressions/UserDefinedFunction.scala --- @@ -45,14 +45,33 @@ import org.apache.spark.sql.types.DataType case class UserDefinedFunction protected[sql] ( f: AnyRef, dataType: DataType, - inputTypes: Option[Seq[DataType]]) { + inputTypes: Option[Seq[DataType]], + name: Option[String]) { + + // Optionally used for printing an UDF name in EXPLAIN + def withName(name: String): UserDefinedFunction = { + UserDefinedFunction(f, dataType, inputTypes, Option(name)) + } /** * Returns an expression that invokes the UDF, using the given arguments. * * @since 1.3.0 */ def apply(exprs: Column*): Column = { - Column(ScalaUDF(f, dataType, exprs.map(_.expr), inputTypes.getOrElse(Nil))) + Column(ScalaUDF(f, dataType, exprs.map(_.expr), inputTypes.getOrElse(Nil), name)) + } +} + +object UserDefinedFunction { --- End diff -- ok. Is it okay to update the MiMa file?
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