DROP FUNCTION() SQL Commands DROP FUNCTION()NAME
DROP FUNCTION - Removes a user-defined C function
SYNOPSIS
DROP FUNCTION name ( [ type [, ...] ] )
INPUTS
name The name of an existing function.
type The type of function parameters.
OUTPUTS
DROP Message returned if the command completes successfully.
NOTICE 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 references to an existing C function. To exe‐
cute this command the user must be the owner of the function. The input
argument types to the function must be specified, as only the function
with the given name and argument types will be removed.
NOTES
Refer to CREATE FUNCTION [create_function(l)] for information on creat‐
ing aggregate functions.
No checks are made to ensure that types, operators or access methods
that rely on the function have been removed first.
USAGE
This command removes the square root function:
DROP FUNCTION sqrt(int4);
COMPATIBILITY
SQL92
DROP FUNCTION is a Postgres language extension.
SQL/PSM
SQL/PSM is a proposed standard to enable function extensibility. The
SQL/PSM DROP FUNCTION statement has the following syntax:
DROP [ SPECIFIC ] FUNCTION name { RESTRICT | CASCADE }
SQL - Language Statements 29 March 2001 DROP FUNCTION()
