17.10 - Nonunique Indexes - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - SQL Fundamentals

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1141-171K
Language
English (United States)

A nonunique index does not require its values to be unique. There are occasions when a nonunique index is the best choice as the primary index for a table.

NUSIs are also very useful for many decision support situations.