16.20 - UNIQUE - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL Data Definition Language Syntax and Examples

prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
created_date
March 2019
category
Programming Reference
featnum
B035-1144-162K

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.