DROP TYPE
Name
DROP TYPE -- remove a data type
Synopsis
DROP TYPE name [, ...] [ CASCADE | RESTRICT ]
Description
   DROP TYPE will remove a user-defined data type.
   Only the owner of a type can remove it.
  
Parameters
- 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, but note that the CREATE TYPE command
   and the data type extension mechanisms in
   PostgreSQL differ from the SQL standard.