Continuation-Please help with a complex sql query

Question

Hi all,
Thanks a lot for your suggestions and inputs in the last thread of this post.
With the help of your suggested approach,i went ahead and was able to get some more data in the format as needed..I worked on gradually adding one table after another exactly as the data is required stepwise.But,still I am facing issues with displaying them.
there are many issues I am not able to do and would appreciate if you please have a look at my latest modified SELECT given below and help me writing it to get the display as needed.
Below,is the attempted query i tried out using your inputs.But,am stuck and need your help in writing it.
**Here,there is 1 ->MANY lines for the t_objective_id--->This has many learning_record_ids which i want to group by the unique objective_id.
Also,prior to that,there is a tplan_id---->which has MANY t_objective_id's
SELECT DECODE (LAG (firstname, 1, 0) OVER (ORDER BY firstname),
               firstname, ' ',
               firstname
              ) firstname,
       DECODE (LAG (emplid, 1, 0) OVER (ORDER BY emplid),
               emplid, ' ',
               emplid
              ) emplid,
       DECODE (LAG (tplan_name, 1, 0) OVER (ORDER BY tplan_name),
               tplan_name, ' ',
               tplan_name
              ) tplan_name,
              tplan_id,
              DECODE (LAG (activities, 1, 0) OVER (ORDER BY activities),
               activities, ' ',
               activities
              ) activities,
              activities,
              --activities,
       DECODE (LAG (t_objective_id, 1, 0) OVER (ORDER BY t_objective_id),
               t_objective_id, ' ',
               t_objective_id
              ) t_objective_id,           
               completed_activities,required_credits,
      DECODE (LAG (learning_record_id, 1, 0) OVER (ORDER BY learning_record_id),
               learning_record_id, ' ',
               learning_record_id
              ) learning_record_id,           
               catalog_item_name,catalog_item_type           
  FROM (SELECT test_cp.firstname, test_op.emplid, tp.tplan_name,tp.tplan_id,FN_TP_GET_CMPLTD_ACT_CNT(tp.tplan_id,test_lp.lp_person_id,'1862') activities,
               test_tpo.t_objective_id,
               (  fn_tp_obj_comp_req_act_cdt (test_lp.lp_person_id,
                                              tp.tplan_id,
                                              test_tpo.t_objective_id,
                                              tp.is_credit_based
                + fn_tp_obj_comp_opt_act_cdt (test_lp.lp_person_id,
                                              tp.tplan_id,
                                              test_tpo.t_objective_id,
                                              tp.is_credit_based
               ) completed_activities,test_tpo.required_credits,lr.learning_record_id,lr.catalog_item_name,lr.catalog_item_type
          FROM test_learning_plan test_lp,
               test_training_plan tp,
               test_person test_cp,
               test_org_person test_op,test_tp_learning_activity test_tplplr,
               test_tp_objective test_tpo,test_learning_record lr,test_train_obj_activity tpobjact
         WHERE test_lp.lp_person_id = '1862188559'
           AND test_cp.person_id = test_lp.lp_person_id
           AND tp.tplan_id = 'tplan200811200632352287621599'
           AND test_tpo.t_objective_id = tpobjact.t_objective_id
           AND test_lp.LP_CATALOG_HIST_ID = tp.tplan_id
           AND test_tplplr.tp_lp_lr_id =test_lp.learning_plan_id
           AND test_tplplr.activity_lp_lr_id = lr.learning_record_id
           AND lr.LR_CATALOG_HISTORY_ID = tpobjact.activity_id
           AND test_op.o_person_id = test_cp.person_id
           AND test_tpo.tplan_id = tp.tplan_id)
If we see the outer SELECT ---then one of the main issues is for EACH t_objective_id----->There are n learning_record_ids.
But,this select only shows 1 learning_record_id for each objective_id which is wrong.
Similarly,the data displayed isnot proper.
Below is the way I am getting the data now from the above SELECT.
Note:- FIRSTNAME is not correctly displayed.
FIRSTNAME     EMPLID     TPLAN_NAME     TPLAN_ID     ACTIVITIES     ACTIVITIES_1  
                  001                TP1          tplan1          5          5
TESTNAME                                              tplan1           5          
Continuation of the other columns of the same rows--**couldnt paste it properly so.
T_OBJECTIVE_ID     COMPLETED_ACTIVITIES     REQUIRED_CREDITS     LEARNING_RECORD_ID        CATALOG_ITEM_NAME     CATALOG_ITEM_TYPE
          obj1               1                         5                         lr1                            C1                          Course
                obj2               4                        4          

Answer 1

Something like this might solve your problem ->
satyaki>
satyaki>select * from v$version;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE    10.2.0.1.0      Production
TNS for Linux: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
Elapsed: 00:00:00.00
satyaki>
satyaki>
satyaki>select * from emp;
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7521 WARD       SALESMAN        7698 22-FEB-81     226.88        500         30
      7654 MARTIN     SALESMAN        7698 28-SEP-81       1815       1400         30
      7788 SCOTT      ANALYST         7566 19-APR-87     598.95                    20
      7839 KING       PRESIDENT            17-NOV-81       7260                    10
      7844 TURNER     SALESMAN        7698 08-SEP-81       2178          0         30
      7876 ADAMS      CLERK           7788 23-MAY-87     159.72                    20
      7900 JAMES      CLERK           7698 03-DEC-81     1379.4                    30
      7902 FORD       ANALYST         7566 03-DEC-81    5270.76                    20
      7934 MILLER     CLERK           7782 23-JAN-82     1887.6                    10
      7566 Smith      Manager         7839 23-JAN-82       1848          0         10
      7698 Glen       Manager         7839 23-JAN-82       1848          0         10
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7599 BILLY      ANALYST         7566 10-JUN-09       4500                    30
12 rows selected.
Elapsed: 00:00:00.00
satyaki>
satyaki>
satyaki>
satyaki>
satyaki>select decode(lag(job,1,null) over(order by job),'CLERK','CK',
  2                                                   'SALESMAN', 'SM',
  3                                                   'ANALYST','AL',
  4                                                   'BO') res
  5  from emp;
RE
BO
AL
AL
AL
CK
CK
CK
BO
BO
BO
SM
RE
SM
12 rows selected.
Elapsed: 00:00:00.01
satyaki>
satyaki>
satyaki>select MAX(decode(lag(job,1,null) over(order by job),'CLERK','CK',
  2                                                   'SALESMAN', 'SM',
  3                                                   'ANALYST','AL',
  4                                                   'BO')) res
  5  from emp;
select MAX(decode(lag(job,1,null) over(order by job),'CLERK','CK',
ERROR at line 1:
ORA-30483: window  functions are not allowed here
Elapsed: 00:00:00.01
satyaki>
satyaki>select MAX(res)
  2  from (
  3          select decode(lag(job,1,null) over(order by job),'CLERK','CK',
  4                                                           'SALESMAN', 'SM',
  5                                                           'ANALYST','AL',
  6                                                           'BO') res
  7          from emp
  8     );
MA
SM
Elapsed: 00:00:00.00
satyaki>
satyaki>Regards.
Satyaki De.