ALTER FUNCTION

Syntax

ALTER FUNCTION function( argument_type [, ...] )
    alter_option;

alter_option depends on the operation you want to perform on the function. For all supported clauses, see the sections below.

ALTER FUNCTION function( argument_type [, ...] )
    SET SCHEMA schema_name;

Parameter or clause	Description
SET SCHEMA	This clause changes the schema of the function. To change a function’s schema, you must also have CREATE privilege on the new schema.
schema_name	Specify the schema to which you want to change.

-- Change the schema of the function named "test_func" to a schema named "test_schema"
ALTER FUNCTION test_func(INT) SET SCHEMA test_schema;