DROP FUNCTION

DROP FUNCTION can be used to remove a user defined function.

Permissions

The role must have the DDL permission at the database level.

Syntax

drop_function_statement ::=
    DROP FUNCTION [ IF EXISTS ] function_name();
    ;

function_name ::= identifier

Parameters

Parameter	Description
`IF EXISTS`	Drop the function if it exists. Does not error if the function does not exist.
`function_name()`	The name of the function to drop.

Examples

Dropping a function

DROP FUNCTION my_distance();

Dropping a function (always succeeds)

farm=> DROP FUNCTION my_distance();
executed

farm=> DROP FUNCTION my_distance();
Function 'my_distance' not found

-- This will succeed, even though the function does not exist
farm=> DROP FUNCTION IF EXISTS my_distance();
executed