How to return complex data to PL/SQL pkg from java running in JVM

Question

Hi, I don't know where could I post this question, so I post it here.
In Oracle, we could create object as type, and can pass it to Java (powered by JDBC I guess, but I don't know how to, if some one know, please tell me where could get the good document to teach me about this), but is there any way could return complex data (maybe in Oracle Object Type) to PL/SQL (not using long & seperated by sign string / using middle table)?
If you know, please tell me how to / tell me the url or book name for how to do this, thanks!

Answer 1

with t as (
           select  1 id,'a' type_cd from dual union all
           select  1 id,'a' type_cd from dual union all
           select  1 id,'b' type_cd from dual union all
           select  2 id,'c' type_cd from dual union all
           select 33 id,'b' type_cd from dual union all
           select 33 id,'b' type_cd from dual union all
           select 33 id,'c' type_cd from dual union all
           select 33 id,'d' type_cd from dual union all
           select  5 id,'c' type_cd from dual union all
           select  5 id,'c' type_cd from dual
select  id,
        type_cd
  from  (
         select  id,
                 type_cd,
                 count(distinct type_cd) over(partition by id) cnt,
                 row_number() over(partition by id,type_cd order by 1) rn
           from  t
  where type_cd = 'c'
    and cnt     = 1
    and rn      = 1
        ID T
         2 c
         5 c
SQL>SY.