17.10 - Collecting Statistics on Unique Join Indexes - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Definition Language Detailed Topics

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1184-171K
Language
English (United States)

You should always collect statistics on the primary index of a unique join index, whether it is user-defined or system-defined, so the Optimizer can use those statistics to most accurately estimate the cost of using a particular unique join index.