text: -- [er] add query having character value to int column to vclass
   
  CREATE CLASS ddl_0001;
  CREATE VCLASS ddl_0002;
  ALTER ddl_0002 add col11 int;
  ALTER VCLASS ddl_0002 add query select to_char( count(*) ) from all ddl_0001;
  
  
  
  
  drop vclass ddl_0002;
  drop class ddl_0001;
  