DROP DOMAIN

Removes a domain.

Synopsis

DROP DOMAIN [IF EXISTS] <name> [, ...]  [CASCADE | RESTRICT]

DROP DOMAIN removes a previously defined domain. Only the owner of a domain can remove it.

IF EXISTS Do not throw an error if the domain does not exist. A notice is issued in this case.

name The name (optionally schema-qualified) of an existing domain.

CASCADE Automatically drop objects that depend on the domain (such as table columns), and in turn all objects that depend on those objects.

RESTRICT Refuse to drop the domain if any objects depend on it. This is the default.

Remove the domain named us_postal_code:

DROP DOMAIN us_postal_code;

This command conforms to the SQL standard, except for the IF EXISTS option, which is a WarehousePG extension.