Interactive Reporting - Multiple SELECT stmts in 1 query

Question

Is it possible to multiple/nested select statements in 1 query? Actually what I need to do is pull records for the last 12 months. The SQL that I'm basing my IR query from has multiple SELECT statements and uses the add_month function w/ a parameter ranging from 0 to -12.
Thanks.
Terri

Answer 1

Here's some of the additional SELECTs. There are more after these that I didn't include since it would be fairly long.
CREATE OR REPLACE VIEW DEFECT_INVENTORY
(NEW_COUNT, CLOSE_COUNT, BEGINNING_COUNT, ENDING_COUNT, MONTHNAME,
SEVERITY)
AS
select New_Count, Close_Count, Beginning_count, Ending_Count,r.Monthname, r.Severity from
(select p.New_Count, q.Close_Count,p.sev Severity, p.Month_Name Monthname from
(Select count(bg_bug_id) New_Count,a.Month_Name, a.sev
from
(select bg_bug_id,
bg_severity sev,
bg_user_10 app,
bg_detection_date,
bg_closing_date,
to_date(bg_user_26, 'yyyy-mm-dd') as cancel_date,
to_date(substr(bg_vts,1,10), 'yyyy-mm-dd') as vts,
to_char(to_date((to_char(add_months(sysdate, -11), 'MM')||'/01/'||to_char(add_months(sysdate, -11), 'YYYY')), 'MM/DD/RRRR') -1, 'MON-YY') as Month_Name,
bg_status,
to_date((to_char(add_months(sysdate, -11), 'MM')||'/01/'||to_char(add_months(sysdate, -11), 'YYYY')), 'MM/DD/RRRR') -1 AS rpt_DATE_end,
to_date((to_char(add_months(sysdate, -12), 'MM')||'/01/'||to_char(add_months(sysdate, -12), 'YYYY')), 'MM/DD/RRRR') AS rpt_DATE_beg
from bug ) a
where (a.bg_status not like '65-Cancelled'
and a.bg_detection_date <= a.rpt_DATE_end
and a.bg_detection_date >= a.rpt_DATE_beg
and a.cancel_date is null)
group by a.sev, a.Month_Name) p,
(Select count(bg_bug_id) Close_Count,a.Month_Name, a.sev
from
(select bg_bug_id,
bg_severity sev,
bg_user_10 app,
bg_detection_date,
bg_closing_date,
to_date(bg_user_26, 'yyyy-mm-dd') as cancel_date,
to_date(substr(bg_vts,1,10), 'yyyy-mm-dd') as vts,
bg_status,
to_char(to_date((to_char(add_months(sysdate, -11), 'MM')||'/01/'||to_char(add_months(sysdate, -11), 'YYYY')), 'MM/DD/RRRR') -1, 'MON-YY') as Month_Name,
to_date((to_char(add_months(sysdate, -12), 'MM')||'/01/'||to_char(add_months(sysdate, -12), 'YYYY')), 'MM/DD/RRRR') AS rpt_DATE_beg,
to_date((to_char(add_months(sysdate, -11), 'MM')||'/01/'||to_char(add_months(sysdate, -11), 'YYYY')), 'MM/DD/RRRR') -1 AS rpt_DATE_end
from bug ) a
where (a.bg_status like 'Closed'
and a.bg_closing_date <= a.rpt_DATE_end
and a.bg_closing_date >= a.rpt_DATE_beg
and a.bg_closing_date is not null)
or
(a.bg_status like 'Closed'
and a.vts <= a.rpt_DATE_end
and a.vts >= a.rpt_DATE_beg
and a.bg_closing_date is null)
or
(a.bg_status not like 'Closed'
and a.bg_closing_date <= a.rpt_DATE_end
and a.bg_closing_date >= a.rpt_DATE_beg
and a.bg_closing_date is not null)
group by a.sev, a.Month_Name) q
where p.sev = q.sev) r,