17.10 - System-Defined Unique Secondary Indexes - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Definition Language Detailed Topics

Advanced SQL Engine
Teradata Database
Release Number
Release Date
July 2021
Content Type
Programming Reference
Publication ID
English (United States)

When you define a PRIMARY KEY or UNIQUE constraint, the system may implement that constraint as a unique secondary index or unique join index.

All system-defined USIs and unique join indexes count against the limit of 32 secondary, hash, and join indexes per user-defined data base table.