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

Teradata Database SQL Data Definition Language Syntax and Examples

prodname
Teradata Database
vrm_release
15.10
created_date
December 2015
category
Programming Reference
featnum
B035-1144-151K

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);