小编ora*_*anj的帖子

我有一个如下定义的多级集合。

declare
     type t_addr_lines is varray(4) of varchar2(60);
     type t_addr_entry is table of t_addr_lines index by varchar2(10);
     type t_student    is record
     (
         last_name      varchar2(20),
         first_name     varchar2(20),
         l_addr_entry   t_addr_entry
     );

     type t_students is table of t_student; 

     l_students t_students;

     begin

         l_students := t_students();
         l_students.extend();

     end;

/

本质上，结构是：

 a. a student can have different types of addresses ( 'HOME', 'VACATION' )
 b. each address can have maximum of 4 lines

我想知道如何解决和填充集合的不同组成部分。