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.
