Github user WeichenXu123 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20934#discussion_r178217425
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/UDFRegistration.scala ---
@@ -217,6 +217,27 @@ class UDFRegistration private[sql] (functionRegistry:
FunctionRegistry) extends
if (nullable) udf else udf.asNonNullable()
}
+ /**
+ * Registers a deterministic Scala closure of 2 arguments as
user-defined function (UDF).
+ * @since 2.4.0
+ */
+ def registerV2(name: String, func: Function2[_, _, _], returnType:
DataType,
+ input1Type: DataType, input2Type: DataType, nullable: Boolean,
deterministic: Boolean)
--- End diff --
so you mean:
```
def registerV2(udf: UserDefinedFunctionV2)
```
?
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