DROP FUNCTION — remove a function
DROP FUNCTIONname
( [type
[, ...] ] ) [ CASCADE | RESTRICT ]
DROP FUNCTION
removes the definition of an existing
function. To execute this command the user must be the
owner of the function. The argument types to the
function must be specified, since several different functions
may exist with the same name and different argument lists.
name
The name (optionally schema-qualified) of an existing function.
type
The data type of an argument of the function.
CASCADE
Automatically drop objects that depend on the function (such as operators or triggers).
RESTRICT
Refuse to drop the function if any objects depend on it. This is the default.