create or replace trigger tri_dbset AFTER INSERT OR UPDATE OR DELETE
on t_sjzx_dbset for each row
begin
   IF INSERTING THEN
     insert into t_tri_dbset(id,name,remark,tablename,classid,actfield) values(:new.id,:new.name,:new.remark,:new.tablename,:new.classid,1);
   ELSIF UPDATING THEN
     insert
 
 into t_tri_dbset(id,name,remark,tablename,classid,actfield) values(:new.id,:new.name,:new.remark,:new.tablename,:new.classid,2);
   ELSIF DELETING THEN
     insert into t_tri_dbset(id,name,remark,tablename,classid,actfield) values(:old.id,:old.name,:old.remark,:old.tablename,:old.classid,3);
   END
 
 IF;
END;

幾個關鍵：
1、AFTER INSERT OR UPDATE OR DELETE
2、for each row 行級，不加就是表級
3、:new 新記錄
4、:old 舊記錄