How can I convert this small pl/sql block in a single query?

Question

Hello,
I need to have a single SQL query which gives the same output as the following piece of code, which uses a cursor to iterate on the rows in order to get the informations I need:
declare
cursor c(p varchar2) is
select context_id, id, parent_id
from CONTEXT_CONTEXT
start with parent_id is null
and context_id = p
connect by prior id = parent_id
and context_id = p;
begin
for r in (select context_id from ALL_CONTEXTS where context_type in ('MYTYPE'))
loop
for j in c(r.context_id)
loop
-- I want to obtain the values of the following colums from a query:
dbms_output.put_line(j.context_id || ' ' || j.id || ' ' || j.parent_id);
end loop;
end loop;
end;
Additional informations:
CONTEXT_CONTEXT.context_id references ALL_CONTEXTS.id
CONTEXT_CONTEXT.id references ALL_CONTEXTS.id as well
CONTEXT_CONTEXT.parent_id references ALL_CONTEXTS.id as well
id is primary key of ALL_CONTEXTS
(context_id, id) is primary key of CONTEXT_CONTEXT
*/

Answer 1

user10047839 wrote:
Unfortunately, the CONNECT_BY_ROOT is not supported by my version of the DB 9i.
SELECT  context_id,
        SUBSTR(
               SYS_CONNECT_BY_PATH(context_id,'/'),
               2,
               INSTR(
                     SYS_CONNECT_BY_PATH(context_id,'/') || '/',
                     1,
                     2
                    ) - 2
              ) AS parent_context_id
  FROM  CONTEXT_CONTEXT
  START WITH parent_id IS NULL
    AND context_id IN (
                       SELECT  context_id
                         FROM  all_contexts
                         WHERE context_type IN ('MYTYPE')
  CONNECT BY PRIOR ID = parent_id
         AND context_id = PRIOR context_id;SY.