Report custom requirement

Question

I have following data inside Table A:
ID Group ItemKey Description
1 A AB123 Descr1
2 A HT090 Descr2
3 A MK009 Descr3
4 B TW189 Descr4
5 B ID876 Descr5
6 C UJL89 Descr6
I want to create a report with following result:
Group ItemKey Description
A AB123 Descr1
B TW189 Descr4
C UJL89 Descr6
Furthermore, when user move the mouse over the first row on the report then tooltip shall display following:
"Other records on this Group A:
ItemKey Description
HT090 Descr2
MK009 Descr3"
How can I achieve this requirement?
Select distinct?
Many thanks.

Answer 1

Hi there,
I can get you some of the way there, and if you are working on 11g R2, probably most of the way:
create table a(item_id number, item_grp varchar2(1), itemkey varchar2(5), description varchar2(10));
insert into a(item_id, item_grp, itemkey, description)
values(1, 'A', 'AB123', 'Descr1');
insert into a(item_id, item_grp, itemkey, description)
values(2, 'A', 'HT090', 'Descr2');
insert into a(item_id, item_grp, itemkey, description)
values(3, 'A', 'MK009', 'Descr3');
insert into a(item_id, item_grp, itemkey, description)
values(4, 'B', 'TW189', 'Descr4');
insert into a(item_id, item_grp, itemkey, description)
values(5, 'B', 'ID876', 'Descr5');
insert into a(item_id, item_grp, itemkey, description)
values(6, 'C', 'UJL89', 'Descr6');This first query will give you the results you need:
select a.item_grp, a.itemkey, a.description
from   a,
      (select item_grp, min(item_id) item_id from a group by item_grp) b
where  a.item_id = b.item_id;
ITEM_GRP ITEMKEY DESCRIPTION
A        AB123   Descr1
B        TW189   Descr4
C        UJL89   Descr6I'm not sure about the tool-tip, but the listagg analytic function might help you. It's only available on 11g Release 2 though...
select a.item_grp,
       listagg(itemkey, ', ') within group (order by item_id) item_keys,
       listagg(description, ', ') within group (order by item_id) descriptions
from   a
group  by item_grp;
ITEM_GRP ITEM_KEYS             DESCRIPTIONS
A        AB123, HT090, MK009   Descr1, Descr2, Descr3
B        TW189, ID876          Descr4, Descr5
C        UJL89                 Descr6Maybe you could parse out the first value from the second and third columns and put the remaining items in a separate column and use this as a title attribute in the column attributes?
select item_grp,
       case instr(item_keys, ', ')
         when 0 then
          item_keys
         else
          substr(item_keys, 1, instr(item_keys, ', ') - 1)
       end item_key,
       case instr(descriptions, ', ')
         when 0 then
          descriptions
         else
          substr(descriptions, 1, instr(descriptions, ', ') - 1)
       end description,
       case instr(item_keys, ', ')
         when 0 then
          null
         else
          substr(item_keys, instr(item_keys, ', ') + 2)
       end other_keys,
       case instr(descriptions, ', ')
         when 0 then
          null
         else
          substr(descriptions, instr(descriptions, ', ') + 2)
       end other_descs
from (select a.item_grp,
             listagg(itemkey, ', ') within
      group(
      order by item_id) item_keys, listagg(description, ', ') within
      group(
      order by item_id) descriptions
      from a
      group by item_grp);
ITEM_GRP ITEM_KEY    DESCRIPTION  OTHER_KEYS      OTHER_DESCS
A        AB123       Descr1       HT090, MK009    Descr2, Descr3
B        TW189       Descr4       ID876           Descr5
C        UJL89       Descr6                                                                                        I had to use the case statements to allow for group C that has no other items in it.
I hope this helps.
Regards,
Jerry