This is a read-only copy of the MariaDB Knowledgebase generated on 2025-05-05. For the latest, interactive version please visit https://mariadb.com/kb/.

Server Constraints

Overview

MariaDB Enterprise Server provides DDL (Data Definition Language) syntax to create, alter, or drop constraints.

In the context of ISO 9075-2:2016, this page uses "DDL (Data Definition Language)" to refer to SQL statements in the standard's "SQL-schema statements" group.

Compatibility

  • MariaDB Enterprise Server 10.3
  • MariaDB Enterprise Server 10.4
  • MariaDB Enterprise Server 10.5
  • MariaDB Enterprise Server 10.6
  • MariaDB Enterprise Server 11.4

Constraints

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