DROP DOMAIN
DROP DOMAIN — remove a domain
Synopsis
DROP DOMAIN [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
Description
DROP DOMAIN removes a domain. Only the owner of a domain can remove it. 
Parameters
- 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 (see Section 5.13). 
- RESTRICT
- Refuse to drop the domain if any objects depend on it. This is the default. 
Examples
 To remove the domain box: 
DROP DOMAIN box;
Compatibility
 This command conforms to the SQL standard, except for the IF EXISTS option, which is a Postgres Pro extension. 

