UNIQUE - 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™

Any two rows in the table cannot have the same value or combination of values in the indexed columns.

You cannot specify UNIQUE for a secondary index:

  • if you also specify ALL.
  • for a secondary index defined on a join index.
  • if you also specify an ORDER BY clause.
  • for a column that has a LOB UDT or XML data type.