suse man page for drop_type

DROP 
TYPE(7)							   SQL Commands 						      DROP TYPE(7)

NAME
       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 PostgreSQL extension.
       But note that the CREATE TYPE command and the data type extension mechanisms in PostgreSQL differ from the SQL standard.

SEE ALSO
       CREATE TYPE [create_type(7)], ALTER TYPE [alter_type(7)]

SQL - Language Statements					    2010-05-14							      DROP TYPE(7)