1 ALTER 2 FUNCTION function-name 2.1? ( 2.1.1? 2.1.1+ , 2.1.1 parameter-type 2.1.2 ) 2 SPECIFIC FUNCTION specific-name 3! ALTER 4? RESTRICT 5 option-list parameter-type 1 data-type 1.1? AS LOCATOR data-type 1 built-in-type 1 distinct-type-name