Please help urgent in PL/SQL or SQL

Question

I have table like
TIMESTAMP SID
11/12/2008 1:25:02 PM 10
11/12/2008 1:25:02 PM 20
11/12/2008 1:25:02 PM 30
11/12/2008 1:30:02 PM 10
11/12/2008 1:30:02 PM 40
11/12/2008 1:35:00 PM 40
11/12/2008 1:35:00 PM 50
11/12/2008 1:35:00 PM 60
11/12/2008 1:35:00 PM 70
You can assume that for the first timestamp entry, all SID are new.
eg:1.25.02timestamp new sid(10,20,30)
compare that sid with next timestamp of sid
eg:1.25.02timestamp has sid 10 and 1.30.02timestamp has sid 10 so existing sid is 10
1.30.2timestamp don't have 20,30 compare with 1.25.02 timestamp so sid 20,30 are deleted
1.30.2timestamp have 40 so newsid is 40
then compare the secondtimestamp(1.30.2timestamp ) to thirdtimestamp(1:35:00)
NOTE: LOOK THREAD :nee help in PL/SQL or SQL
THIS QUERY GIVES LIKE:
TIMESTAMP New SID Existing SID Deleted SID
11/12/2008 1:25:02 PM 3 0 0
11/12/2008 1:30:02 PM 1 1 2
11/12/2008 1:35:00 PM 3 1 1
BUT EXPECTED OUTPUT LIKE(I WANT LIKE)
TIMESTAMP New SID Existing SID Deleted SID
11/12/2008 1:25:02 PM 10,20, 30 0 0
11/12/2008 1:30:02 PM 40 10 20, 30
11/12/2008 1:35:00 PM 50,60, 70 40 10
ANYBODY HELP PLEASE

Answer 1

alter session set nls_date_format = 'MM/DD/YYYY HH:MI:SS PM'
with t as (
           select '11/12/2008 1:25:02 PM' tstamp,10 sid  from dual union all
           select '11/12/2008 1:25:02 PM',20 from dual union all
           select '11/12/2008 1:25:02 PM',30 from dual union all
           select '11/12/2008 1:30:02 PM',10 from dual union all
           select '11/12/2008 1:30:02 PM',40 from dual union all
           select '11/12/2008 1:35:00 PM',40 from dual union all
           select '11/12/2008 1:35:00 PM',50 from dual union all
           select '11/12/2008 1:35:00 PM',60 from dual union all
           select '11/12/2008 1:35:00 PM',70 from dual
select  tstamp,
        ltrim(replace(sys_connect_by_path(case new when 1 then sid else -1 end,','),',-1'),',') "New SID",
        ltrim(replace(sys_connect_by_path(case existing when 1 then sid else -1 end,','),',-1'),',')"Existing SID",
        ltrim(replace(sys_connect_by_path(case deleted when 1 then sid else -1 end,','),',-1'),',')"Deleted SID"
  from  (
         select  tstamp,
                 sid,
                 grp,
                 new,
                 existing,
                 deleted,
                 row_number() over(partition by grp order by sid nulls last) rn
           from  (
                   select  tstamp,
                           sid,
                           -- group number based on timestamp
                           dense_rank() over(order by tstamp) grp,
                           -- Check if sid is new sid (not present in previous group)
                           case when lag(tstamp) over(partition by sid order by tstamp) is null then 1 else 0 end new,
                           -- Check if sid is existing sid (present in previous group)
                           case when lag(tstamp) over(partition by sid order by tstamp) is null then 0 else 1 end existing,
                           0 deleted
                     from  t
                  union all
                   -- List of sid's not present in a group but present in a previous group
                   select  null tstamp,
                           sid,
                           grp + 1 grp,
                           0 new,
                           0 existing,
                           1 deleted
                     from  (
                            select  sid,
                                    grp,
                                    -- Check if sid is present in next group (1 - present, 0 - not present).
                                    case lead(grp) over(partition by sid order by grp)
                                      when grp + 1 then 1
                                      else 0
                                    end in_next_grp,
                                     -- last group number
                                    max(grp) over() max_grp
                              from  (
                                     select  tstamp,
                                             sid,
                                             -- group number based on timestamp
                                             dense_rank() over(order by tstamp) grp
                                       from  t
                     where in_next_grp = 0
                       and grp < max_grp
  where connect_by_isleaf = 1 -- we are only interested in a leaf row which represents complete branch
  start with rn = 1 -- start with first row in a group
  connect by rn = prior rn + 1 and grp = prior grp -- traverse through each sid in a group including deleted
  order by tstamp
SQL> alter session set nls_date_format = 'MM/DD/YYYY HH:MI:SS PM'
  2  /
Session altered.
SQL> with t as (
  2             select '11/12/2008 1:25:02 PM' tstamp,10 sid  from dual union all
  3             select '11/12/2008 1:25:02 PM',20 from dual union all
  4             select '11/12/2008 1:25:02 PM',30 from dual union all
  5             select '11/12/2008 1:30:02 PM',10 from dual union all
  6             select '11/12/2008 1:30:02 PM',40 from dual union all
  7             select '11/12/2008 1:35:00 PM',40 from dual union all
  8             select '11/12/2008 1:35:00 PM',50 from dual union all
  9             select '11/12/2008 1:35:00 PM',60 from dual union all
10             select '11/12/2008 1:35:00 PM',70 from dual
11            )
12  select  tstamp,
13          ltrim(replace(sys_connect_by_path(case new when 1 then sid else -1 end,','),',-1'),',') "New SID",
14          ltrim(replace(sys_connect_by_path(case existing when 1 then sid else -1 end,','),',-1'),',')"Existing SID",
15          ltrim(replace(sys_connect_by_path(case deleted when 1 then sid else -1 end,','),',-1'),',')"Deleted SID"
16    from  (
17           select  tstamp,
18                   sid,
19                   grp,
20                   new,
21                   existing,
22                   deleted,
23                   row_number() over(partition by grp order by sid nulls last) rn
24             from  (
25                     select  tstamp,
26                             sid,
27                             -- group number based on timestamp
28                             dense_rank() over(order by tstamp) grp,
29                             -- Check if sid is new sid (not present in previous group)
30                             case when lag(tstamp) over(partition by sid order by tstamp) is null then 1 else 0 end new,
31                             -- Check if sid is existing sid (present in previous group)
32                             case when lag(tstamp) over(partition by sid order by tstamp) is null then 0 else 1 end existing,
33                             0 deleted
34                       from  t
35                    union all
36                     -- List of sid's not present in a group but present in a previous group
37                     select  null tstamp,
38                             sid,
39                             grp + 1 grp,
40                             0 new,
41                             0 existing,
42                             1 deleted
43                       from  (
44                              select  sid,
45                                      grp,
46                                      -- Check if sid is present in next group (1 - present, 0 - not present).
47                                      case lead(grp) over(partition by sid order by grp)
48                                        when grp + 1 then 1
49                                        else 0
50                                      end in_next_grp,
51                                       -- last group number
52                                      max(grp) over() max_grp
53                                from  (
54                                       select  tstamp,
55                                               sid,
56                                               -- group number based on timestamp
57                                               dense_rank() over(order by tstamp) grp
58                                         from  t
59                                      )
60                             )
61                       where in_next_grp = 0
62                         and grp < max_grp
63                   )
64          )
65    where connect_by_isleaf = 1 -- we are only interested in a leaf row which represents complete branch
66    start with rn = 1 -- start with first row in a group
67    connect by rn = prior rn + 1 and grp = prior grp -- traverse through each sid in a group including deleted
68    order by tstamp
69  /
TSTAMP                New SID              Existing SID         Deleted SID
11/12/2008 1:25:02 PM 10,20,30
11/12/2008 1:30:02 PM 40                   10                   20,30
11/12/2008 1:35:00 PM 50,60,70             40                   10
SQL> SY.