Example: Adding a Table-Level Referential Constraint - Analytics Database - Teradata Vantage

SQL Data Definition Language Syntax and Examples

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2024-10-04
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lifecycle
latest
Product Category
Teradata Vantage™

The first request adds a table-level Referential Constraint relationship on foreign key column a3 with column e1 in table e. Referential integrity is not enforced for this relationship.

The second request drops the foreign key Referential Constraint that was created by the first.

     ALTER TABLE a
     ADD FOREIGN KEY (a3) REFERENCES WITH NO CHECK OPTION e(e1);
    
     ALTER TABLE a
     DROP FOREIGN KEY (a3) REFERENCES e(e1);