DROP TYPE
DROP TYPE — remove a data type
Synopsis
DROP TYPE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
Description
DROP TYPE removes a user-defined data type. Only the owner of a type can remove it. 
Parameters
- IF EXISTS
- Do not throw an error if the type does not exist. A notice is issued in this case. 
- name
- The name (optionally schema-qualified) of the data type to remove. 
- CASCADE
- Automatically drop objects that depend on the type (such as table columns, functions, operators). 
- RESTRICT
- Refuse to drop the type if any objects depend on it. This is the default. 
Examples
 To remove the data type box: 
DROP TYPE box;
Compatibility
 This command is similar to the corresponding command in the SQL standard, apart from the IF EXISTS option, which is a Postgres Pro extension. But note that much of the CREATE TYPE command and the data type extension mechanisms in Postgres Pro differ from the SQL standard.