15.10 - PRIMARY KEY - Teradata Database

Teradata Database SQL Data Definition Language Syntax and Examples

Product
Teradata Database
Release Number
15.10
Published
December 2015
Content Type
Programming Reference
Publication ID
B035-1144-151K
Language
English (United States)
Last Update
2018-06-05

A column set that ensures that no two rows in the table can be duplicates. Only one primary key can be specified per table. Internally, the system uses a unique primary or secondary index to enforce this constraint.

You cannot specify a PRIMARY KEY constraint for a QITS column. See “QITS_column_name” description.