Title: DROP TYPE Author: The PostgreSQL Global Development Group Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/> Date: 2017 Manual: PostgreSQL 9.6.5 Documentation Source: PostgreSQL 9.6.5 Language: English
NAMEDROP_TYPE - remove a data type
DROP TYPE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
DROP TYPE removes a user-defined data type. Only the owner of a type can remove it.
- Do not throw an error if the type does not exist. A notice is issued in this case.
- The name (optionally schema-qualified) of the data type to remove.
- Automatically drop objects that depend on the type (such as table columns, functions, operators).
- Refuse to drop the type if any objects depend on it. This is the default.
To remove the data type box:
DROP TYPE box;
This command is similar to the corresponding command in the SQL standard, apart from the IF EXISTS option, which is a PostgreSQL extension. But note that much of the CREATE TYPE command and the data type extension mechanisms in PostgreSQL differ from the SQL standard.