You can modify or drop a check constraint in SQL using the ALTER TABLE statement. To modify a check constraint, you need to drop the existing one and create a new one with the updated condition.

In diesem Artikel erfahren Sie, wie die Syntax zum Erstellen einer CHECK-Einschränkung in SQL lautet und wie Sie diese effektiv einsetzen. Selected by the community from 7 contributions.

Check Constraints are Supported in all Major DBMSs Check constraints are supported in all of the major DBMS products, including DB2, Oracle, and SQL Server. But they are too-often ignored and not ...