Example: Default Primary Index When Neither Primary Index Nor Primary Key Is Specified - Analytics Database - Teradata Vantage

SQL Data Definition Language Syntax and Examples

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-10-04
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lifecycle
latest
Product Category
Teradata Vantage™

The request in this example specifies neither a primary index nor a primary key. Assuming that the DBS Control parameter PrimaryIndexDefault is set to D or P, Vantage maps the first unique column, column_2 , to a UPI, which cannot be null.

     CREATE TABLE good_7 (
       column_1 INTEGER, 
       column_2 INTEGER NOT NULL UNIQUE,
       column_3 INTEGER NOT NULL UNIQUE);

This request defaults to the following definition.

     CREATE TABLE good_7 (
       column_1 INTEGER, 
       column_2 INTEGER NOT NULL UNIQUE,
       column_3 INTEGER NOT NULL UNIQUE)
     UNIQUE PRIMARY INDEX (column_2);