ALTER AGGREGATE SQL - Language Statements ALTER AGGREGATE change the definition of an aggregate function ALTER AGGREGATE ALTER AGGREGATE name ( type ) RENAME TO newname ALTER AGGREGATE name ( type ) OWNER TO newowner ALTER AGGREGATE changes the definition of an aggregate function. name The name (optionally schema-qualified) of an existing aggregate function. type The argument data type of the aggregate function, or * if the function accepts any data type. newname The new name of the aggregate function. newowner The new owner of the aggregate function. You must be a superuser to change an aggregate's owner. To rename the aggregate function myavg for type integer to my_average: ALTER AGGREGATE myavg(integer) RENAME TO my_average; To change the owner of the aggregate function myavg for type integer to joe: ALTER AGGREGATE myavg(integer) OWNER TO joe; There is no ALTER AGGREGATE statement in the SQL standard.