DROP DOMAIN SQL - Language Statements DROP DOMAIN remove a user-defined domain 1999-07-20 DROP DOMAIN domainname [, ...] [ CASCADE | RESTRICT ] 2002-02-24 domainname The name of an existing domain. CASCADE Automatically drop objects that depend on the domain. This behavior is not currently supported. RESTRICT Do not drop dependent objects. This is the default. 2002-02-24 DROP The message returned if the command is successful. ERROR: RemoveDomain: type 'domainname' does not exist This message occurs if the specified domain (or type) is not found. 2002-02-24 DROP DOMAIN will remove a user domain from the system catalogs. Only the owner of a domain can remove it. It is the user's responsibility to remove any operators, functions, aggregates, access methods, and tables that use a deleted domain. To remove the box domain: DROP DOMAIN box; A DROP DOMAIN statement exists in SQL99. As with most other drop commands, DROP DOMAIN in SQL99 requires a drop behavior clause to select between dropping all dependent objects or refusing to drop if dependent objects exist: DROP DOMAIN name { CASCADE | RESTRICT } PostgreSQL accepts only the RESTRICT option, and currently does not check for existence of dependent objects.