PostgreSQL 7.3.5 Documentation
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DROP FUNCTION

Name

DROP FUNCTION  --  remove a user-defined function

Synopsis

DROP FUNCTION name ( [ type [, ...] ] ) [ CASCADE | RESTRICT ]

Inputs

name

The name (optionally schema-qualified) of an existing function.

type

The type of a parameter of the function.

CASCADE

Automatically drop objects that depend on the function (such as operators or triggers).

RESTRICT

Refuse to drop the function if there are any dependent objects. This is the default.

Outputs

DROP FUNCTION

Message returned if the command completes successfully.

WARNING: RemoveFunction: Function "name" ("types") does not exist

This message is given if the function specified does not exist in the current database.

Description

DROP FUNCTION will remove the definition of an existing function. To execute this command the user must be the owner of the function. The input argument types to the function must be specified, since several different functions may exist with the same name and different argument lists.

Notes

Refer to CREATE FUNCTION for information on creating functions.

Examples

This command removes the square root function: 

DROP FUNCTION sqrt(integer);

Compatibility

A DROP FUNCTION statement is defined in SQL99. One of its syntax forms is similar to PostgreSQL's.

See Also

CREATE FUNCTION
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