16.20 - PostExpansionAction - 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)

Purpose

Run this procedure after a system expansion to rename the temporary, planned maps created with the CreateExpansionMaps procedure to the actual maps to be used in the Mover procedures. This procedure removes the prefix PreExpansionMap before the map names. This procedure is necessary if you ran the Advisor procedures before the system expansion and are not going to run them again afterward.

Syntax



TD_Maps
The name of the database where the procedure is located.
'numOfNodes'
The number of nodes in the expanded system.
SMALLINT is the allowed data type.
'PostExpansionMap'
The name of the contiguous map after the system expansion.
VARCHAR is the allowed data type.

ANSI Compliance

This is Teradata extension to the ANSI SQL:2011 standard.

Usage Notes

An error message is returned in the following cases:
  • If numOfNodes or PostExpansionMap is NULL.
  • If no row is found in TDMaps.Maps because the user has not run the CreateExpansionMaps procedure.
  • If numOfNodes in the CreateExpansionMaps procedure is not the same as numOfNodes in the PostExpansionAction procedure.