16.20 - System-Defined Unique Secondary Indexes - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL Data Definition Language Detailed Topics

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Release Date
March 2019
Content Type
Programming Reference
Publication ID
B035-1184-162K
Language
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.