ANSI Compliance - Advanced SQL Engine - Teradata Database

SQL Data Definition Language Syntax and Examples

Product
Advanced SQL Engine
Teradata Database
Release Number
17.00
Published
September 2020
Language
English (United States)
Last Update
2021-01-23
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B035-1144
lifecycle
previous
Product Category
Teradata Vantage™

CREATE INDEX is a Teradata extension to the ANSI SQL:2011 standard. The ANSI SQL standard does not define DDL for creating indexes.

The CREATE UNIQUE INDEX syntax is functionally equivalent to adding a UNIQUE NOT NULL or PRIMARY KEY NOT NULL constraint set to a column in ANSI SQL:2011 if all of the columns in the column set are NOT NULL.

A CREATE UNIQUE INDEX statement on a column set where one or more columns are nullable is similar.