text: --+ holdcas on;
  --test udt using double type
  create class t1(
  	id int auto_increment primary key,
  	col1 double 
  );
  
  create class t2(
  	a set of t1,
  	b set(varchar(10)),
  	c sequence varchar(10)
  );
  
  insert INTO t1 (col1) values (1.111);
  insert INTO t1 (col1) values (2.222);
  
  SELECT t1 into xx from t1 where id=1;
  insert into t2 values ({xx},{'aaa'},{'vvv'});
  
  select * FROM t1;
  SELECT * FROM t2;
  
  drop t1;
  drop t2;
  --+ holdcas off;
  