Drop Function
Removes a user-defined function.
Synopsis
DROP FUNCTION name ( [ type [, ...] ] )
Parameters
name
The name of the existing function you wish to drop.
type
Zero or more data types consisting of the functionâs arguments. The types combine with the name to uniquely identify the function.
Results
DROP
The message returned when a function is successfully dropped.
ERROR: RemoveFunction: Function
'name
(types)' does not exist
The error returned if the function
name
for the specifiedtypes
does not exist in the current database.
Description
Use this command to remove C function references that are defined in a database. Specifying the parameter types that the function takes allows proper identification; this is necessary when dealing with the C language, as functions exist with the same name that only differ in the types of arguments they take.
Note
DROP FUNCTION
does not check if any database elements rely on the
function, or if removing it would cause any negative effects. You must check these things on
your own.
Example
The following example removes the title(integer)
function from the
booktown
database:
booktown=# DROP FUNCTION title(integer);
DROP
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