Considerations - Aster Execution Engine

Teradata Aster® Developer Guide

Product
Aster Execution Engine
Release Number
7.00.02
Published
July 2017
Language
English (United States)
Last Update
2018-04-13
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Product Category
Software
  • If the semantics of your function fits naturally with the semantics of a UDSF or UDAF, implement it as a UDSF or UDAF.
  • If your function is relatively lightweight both in complexity of execution logic and in its use of memory, implement it as a user defined function.
  • If your function could potentially need as much memory (or disk space) as available, it is better to implement it as a SQL-MapReduce function.