15.10 - Example: Adding a Column With an Unnamed CHECK Constraint - Teradata Database

Teradata Database SQL Data Definition Language Syntax and Examples

Product
Teradata Database
Release Number
15.10
Published
December 2015
Content Type
Programming Reference
Publication ID
B035-1144-151K
Language
English (United States)

Add an unnamed CHECK constraint to ensure that values in column column_1 are always greater than 0.

This example is valid only if there is not an existing unnamed column level CHECK for column_1 in table_1.

     ALTER TABLE table_1 ADD CONSTRAINT column_1 CHECK (column_1 > 0);