16.20 - Example: Using CreateExpansionMaps - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Operators and User-Defined Functions

Product
Advanced SQL Engine
Teradata Database
Release Number
16.20
Release Date
April 2020
Content Type
Administration
Programming Reference
Publication ID
B035-1210-162K
Language
English (United States)

In the following example, the expanded system has 4 nodes and 40 AMPs.

CALL TDMaps.CreateExpansionMaps(4,
                            40,
                            :ContiguousMapString,
                            :OneAmpSparseMapString,
                            :TotalNodesSparseMapString);

Result:

*** Procedure has been executed.
*** Total elapsed time was 1 second.
   ContiguousMapString         PREEXPANSIONMAP_CONTIGUOUSMAP_4NODES
   OneAmpSparseMapString       PREEXPANSIONMAP_1AMPSPARSEMAP_4NODES
   TotalNodesSparseMapString   PREEXPANSIONMAP_4AMPSSPARSEMAP_4NODES