More than Outer join

Question

I have records in a table:
TASKS
=====
TASKID          TASKCD          
1000          AD
1001          AD
1002          AD
1010          EO
1011          EO
1012          EO
1013          EO
EOs tasks depends on AD tasks and we have this dependency relationship in other table:
DEPTASKS
TASKID          DEPID          DEPCD
1010          1000          COMPLIES
1011          1001          COMPLIES
I need to display those AD tasks that does not have any record in DEPTASKS i.e taskid = 1002 as well
as those that has record in DEPTASKS.I am able to get the those ADs using outer join that does not have entry in
DEPTASKS i.e
(select taskad.taskid adid, taskad.taskcd,taskeo.taskid eoid,taskeo.task_cd
from tasks adtask,
tasks eotask) adeo, deptasks
where
adeo.eoid = deptasks.taskid(+)
and deptasks.dep-task-id(+) = adid
Problem: I also have to use one more filter i.e
where DEPCD = 'COMPLIES'
I.E :
adeo.eoid = deptasks.taskid(+)
and deptasks.dep-task-id(+) = adid
and DEPCD = 'COMPLIES'
when I use this filter, it again filters those ADs which does not have records in DEPTASKS.
Any suggestion how to control this scenerio.

Answer 1

Any suggestion how to control this scenerio.Here's a suggestion to "control" this scenario.
SQL> @test3
SQL> --
SQL> with tasks as (
  2    select 1000 as taskid, 'AD' as taskcd from dual union all
  3    select 1001, 'AD' from dual union all
  4    select 1002, 'AD' from dual union all
  5    select 1010, 'EO' from dual union all
  6    select 1011, 'EO' from dual union all
  7    select 1012, 'EO' from dual union all
  8    select 1013, 'EO' from dual),
  9  deptasks as (
10    select 1010 as taskid, 1000 as depid, 'COMPLIES' as depcd from dual union all
11    select 1011, 1001, 'COMPLIES'    from dual union all
12    select 1013, 1002, 'DOESNOTCOMPLY' from dual)
13  --
14  select t.taskid as t_taskid, t.taskcd as t_taskcd,
15         d.taskid as d_taskid, d.depid  as d_depid, d.depcd as d_depcd
16  from tasks t, deptasks d
17  where t.taskid = d.taskid(+)
18  and d.depcd(+) = 'COMPLIES';
  T_TASKID T_TASKCD     D_TASKID    D_DEPID D_DEPCD
      1010 EO               1010       1000 COMPLIES
      1011 EO               1011       1001 COMPLIES
      1001 AD
      1002 AD
      1013 EO
      1000 AD
      1012 EO
7 rows selected.
SQL>
SQL>HTH
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