DROP AGGREGATE SQL - Language Statements DROP AGGREGATE remove an aggregate function DROP AGGREGATE DROP AGGREGATE [ IF EXISTS ] name ( type [ , ... ] ) [ CASCADE | RESTRICT ] DROP AGGREGATE removes an existing aggregate function. To execute this command the current user must be the owner of the aggregate function. IF EXISTS Do not throw an error if the aggregate does not exist. A notice is issued in this case. name The name (optionally schema-qualified) of an existing aggregate function. type An input data type on which the aggregate function operates. To reference a zero-argument aggregate function, write * in place of the list of input data types. CASCADE Automatically drop objects that depend on the aggregate function. RESTRICT Refuse to drop the aggregate function if any objects depend on it. This is the default. To remove the aggregate function myavg for type integer: DROP AGGREGATE myavg(integer); There is no DROP AGGREGATE statement in the SQL standard.