The User Defined Field List of Values function allows you to decide what entries will be valid in any given, user-defined field within a list of values. This means that you can add a new field to a screen through Screen Design and then control the data the users are able to input by selecting from the list of values.

What is a UDF in spark?

User-Defined Functions (aka UDF) is a feature of Spark SQL to define new Column-based functions that extend the vocabulary of Spark SQL’s DSL for transforming Datasets. … You can register UDFs to use in SQL-based query expressions via UDFRegistration (that is available through SparkSession.

Can you modify data inside a UDF?

You cannot modify data inside of a UDF. A scalar-valued UDF returns only one value, where a stored procedure can have numerous OUTPUT parameters. You can use scalar-valued UDFs as the default value for a column in a table.