gistfile1.txt

drop event trigger ddl_event_trigger_trigger;
drop event trigger test_event_trigger_for_drops;
drop event trigger test_table_rewrite_oid;

CREATE OR REPLACE FUNCTION test_event_trigger_ddl()
RETURNS event_trigger AS $$
DECLARE obj record;
BEGIN
    FOR obj IN SELECT * FROM pg_event_trigger_ddl_commands()
    LOOP
        RAISE NOTICE '% created object: % % %',
                     tg_tag,
                     obj.object_type,
                     obj.schema_name,
                     obj.object_identity;
    END LOOP;
END;
$$ LANGUAGE plpgsql;

CREATE OR REPLACE FUNCTION test_event_trigger_for_drops()
        RETURNS event_trigger LANGUAGE plpgsql AS $$
DECLARE                                            
    obj record;
BEGIN
    FOR obj IN SELECT * FROM pg_event_trigger_dropped_objects()
    LOOP
        RAISE NOTICE '% dropped object: % %.% %',
                     tg_tag,
                     obj.object_type,
                     obj.schema_name,
                     obj.object_name,
                     obj.object_identity;
    END LOOP;
END
$$;

CREATE EVENT TRIGGER test_event_trigger_for_drops
   ON sql_drop                                      
   EXECUTE FUNCTION test_event_trigger_for_drops();

CREATE EVENT TRIGGER ddl_event_trigger_trigger
    ON ddl_command_end
    EXECUTE PROCEDURE test_event_trigger_ddl();