DROP DOMAIN

remove a domain

English manual coverage begins with PostgreSQL 6.4. Source history and runtime observations have their own recorded version boundaries.

Reading PG 18·Select a recorded version

anchor: SQL-DROPDOMAIN
file: sql-dropdomain.html
lang: en
name: DROP DOMAIN
purpose: remove a domain
purpose zh: 移除一个域
sections same as: Unknown
slug: 18
synopsis html: DROP DOMAIN [ IF EXISTS ] <em class="replaceable"><code>name</code></em> [, ...] [ CASCADE | RESTRICT ]
synopsis text: DROP DOMAIN [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]

Syntax

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

Syntax diagrams

Read left to right. Branches are choices, bypasses are optional, loops repeat. Select an underlined parameter to open its rule.

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

DROP DOMAIN removes a 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 (see Section 5.15).
RESTRICT: Refuse to drop the domain if any objects depend on it. This is the default.

To remove the domain box:

DROP DOMAIN box;

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

Definition sources

center · PostgreSQL 18 · wiki-repair-20261023:e129e09e34f525d42446f738bdeb97685b5a4e2fc8d606a0ef36b882b819275d

Text language: en · wiki-repair-20261023:e129e09e34f525d42446f738bdeb97685b5a4e2fc8d606a0ef36b882b819275d