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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- xnl1494366523182.ditamap
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- ffu1489104705746
- lifecycle
- previous
- 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.