Example: Default Primary Index When Neither Primary Index Nor Primary Key Is Specified - Advanced SQL Engine - Teradata Database

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);