SQL Help with Time Period vs Time Period Comparison

Question

Hello,
I am trying to create a query that will provide me a result set that will have current revenue (based off user selection of time) compared to another set of revenue with a different time period.
For example:
select a.xx_adm_adv_id, a.xx_edition, sum(a.xx_net_space)
from ps_xx_adm_work_ord a
where A.xx_issue = 'JAN'
AND A.XX_ISSUE_YEAR = '2011'
group by a.xx_adm_adv_id, a.xx_edition
will provide my current data set, now I want to pull in the result set below, but in the 4th column based off of XX_ADM_ADV_ID & XX_EDITION (no repeats for these combinations).
select B.xx_adm_adv_id, B.xx_edition, sum(B.xx_net_space)
from ps_xx_adm_work_ord B
where B.xx_issue in ('JUN', 'JUL')
AND B.XX_ISSUE_YEAR = '2012'
group by B.xx_adm_adv_id, B.xx_edition
So essentially, I should be seeing all xx_adm_adv_id and xx_edition for both time periods and data in atleast one set of columns (3rd or 4th)
I am running 10.2.0.4.0
Many thanks in advance!

Answer 1

Did you try the query that i provided?
Commented XX_ISSUE_YEAR condition,adjust it to meet your requirements.
SQL>
SQL> select distinct a.xx_adm_adv_id,
  2         a.xx_edition,
  3         sum(case
  4               when xx_issue = 'JAN'-- and XX_ISSUE_YEAR = '2011'
  5                  then
  6                a.xx_net_space
  7               else
  8                0
  9             end) over(partition by a.xx_adm_adv_id, a.xx_edition),
10         sum(case
11               when xx_issue in ('JUN', 'JUL')-- and XX_ISSUE_YEAR = '2012'
12                 then
13                a.xx_net_space
14               else
15                0
16             end) over(partition by a.xx_adm_adv_id, a.xx_edition)
17    from PS_ORDER a
18   where A.XX_ISSUE in ('JAN', 'JUN', 'JUL')
19     --AND A.XX_ISSUE_YEAR in ('2011', '2012')
20     order by a.xx_edition
21  ;
XX_ADM_ADV_ID XX_EDITION                     SUM(CASEWHENXX_ISSUE='JAN'--AN SUM(CASEWHENXX_ISSUEIN('JUN','
000016004     NAT                                                    5722.2                         2861.1
000016073     REG                                                   5111.12                              0
000025008     REG                                                         0                        2665.32
SQL>