17.10 - Example: Adding a PRIMARY KEY Constraint to a Table - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Definition Language Syntax and Examples

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1144-171K
Language
English (United States)

table_1 must not already have a defined PRIMARY KEY constraint. Constraint name primary_1 must not duplicate an existing constraint name in table_1.

     ALTER TABLE table_1
       ADD CONSTRAINT primary_1 PRIMARY KEY (column_1, column_2);

column_1 and column_2 must be NOT NULL or an error is returned.