MODIFY CHECK (boolean_condition ) - Advanced SQL Engine - Teradata Database

SQL Data Definition Language Syntax and Examples

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
Published
January 2021
Language
English (United States)
Last Update
2021-01-22
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B035-1144
lifecycle
previous
Product Category
Teradata Vantage™

Change an existing CHECK constraint. The table or column constraint must already exist.
 Vantage scans existing rows of the table to validate that the current values conform to the specified constraint. Otherwise, the system returns an error to the requestor and does not change the table definition.

CONSTRAINT name
Named CHECK column constraint as a table attribute. Specify a column_name on the left-hand side of boolean_condition.