text: -- create table,create table with an auto_increment field,create trigger based on after update event,insert data ,update data , ,select data,drop class
  
  create table xoo (id int ); 
  
  create table tbl(id int auto_increment, a char(10), b char(10), c char(10)); 
  
  create trigger inst_tr2
  after update on xoo 
  execute insert into tbl (a,b,c) values ('1','2','3'); 
  
  
  insert into xoo values (1);
  insert into xoo values (2);
  insert into xoo values (3);
  insert into xoo values (4);
  insert into xoo values (5);
  
  
  update xoo set id =6 where id =1;
  update xoo set id =7 where id =2;
  update xoo set id =8 where id =3;
  update xoo set id =9 where id =4;
  update xoo set id =10 where id =5;
  
  select * from xoo order by 1;
  select * from tbl order by 1;
  
  drop trigger inst_tr2;
  drop table tbl,xoo;
  