Postgresql创建新增、删除与修改触发器的方法

CREATE OR REPLACE FUNCTION fuzzy_query_func() RETURNS TRIGGER AS $$
  BEGIN
   INSERT INTO fuzzy_query(id,name,address,table_name) VALUES (new.id, NEW.name,NEW.address,TG_TABLE_NAME);
   RETURN NEW;
  END;
$$ LANGUAGE plpgsql;

CREATE OR REPLACE FUNCTION fuzzy_query_del()
 RETURNS trigger AS $$
  BEGIN
   DELETE from fuzzy_query where id = OLD.id;
			RETURN OLD;
  END;
$$
 LANGUAGE plpgsql VOLATILE

CREATE OR REPLACE FUNCTION fuzzy_query_update()
 RETURNS trigger AS $$
  BEGIN
   UPDATE fuzzy_query SET name = NEW.name,address = NEW.address where id = NEW.id;
			RETURN NEW;
  END;
$$
 LANGUAGE plpgsql VOLATILE