PostgreSQL 9.3beta1 Documentation
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# DROP TYPE

## 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 much of the `CREATE TYPE` command and the data type extension mechanisms in PostgreSQL differ from the SQL standard.

## See Also

ALTER TYPE, CREATE TYPE

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