16.20 - Intermediate Aggregate Storage - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL External Routine Programming

Product
Advanced SQL Engine
Teradata Database
Release Number
16.20
Release Date
April 2020
Content Type
Programming Reference
Publication ID
B035-1147-162K
Language
English (United States)

All aggregate UDFs require intermediate storage to combine data passed in during the various aggregation phases.

This topic describes how an aggregate UDF handles intermediate storage during each aggregation phase. To help illustrate what is required, the discussion uses code excerpts from a simple aggregate UDF that calculates the arithmetic sum. For the complete code example, see UDF Code Examples.