16.20 - Example: Attempting to Add a Constraint with a Duplicate Name - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL Data Definition Language Syntax and Examples

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Published
March 2019
Language
English (United States)
Last Update
2019-05-24
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The following request is not valid because the constraint named dup_constr_name already exists in table_1. You cannot add it to the table.

    ALTER TABLE table_1
      ADD CONSTRAINT dup_constr_name
      FOREIGN KEY (column_3) REFERENCES table_2;

The system returns the following message:

Constraint with the same name 'dup_constr_name' already exists in table.