Invoking a Window Aggregate UDF - Advanced SQL Engine - Teradata Database

Once an aggregate UDF is defined, you can invoke it using a partition window.

Consider the following aggregate UDF definition:

REPLACE FUNCTION myUdoa(x FLOAT)
RETURNS FLOAT
CLASS AGGREGATE(250)
LANGUAGE JAVA
NO SQL
PARAMETER STYLE JAVA
EXTERNAL NAME 'INVF:AggregateFunctions.myUdoa(com.teradata.fnc.Phase,
   com.teradata.fnc.Context[],double) returns java.lang.Double';

You can invoke this aggregate UDF with the following query:

SELECT myUdoa(Product_ID) OVER() FROM tab_invf01102;