I have some views that I use. An example is below. is there anything
that PL/SQL can do to make the performance better? The view below
works fine for the way that I access it. But for another project, it
now uses that same view and the way it accesses it, it is a little
slower as it uses this view to create another view. Or is this more of
a tuning thing?

Basically in my projects I am trying to use views vs. loading some
data into my tables and then running a job to create or update other
tables. Instead, the views replace the need for having the jobs.

So I guess I am asking if pl/sql can replace the views or make them
faster.




select  g.TERRITORY, coalesce(rev.TRANS_DT ,can.TRANS_DT )
TRANS_DT,g.FISCAL_YEAR,g.FISCAL_QTR,
coalesce(rev.revenue,can.revenue)revenue, g.goal from
aff_rev_goal g,
(select c.TERRITORY, c.TRANS_DT ,c.FISCAL_YEAR,c.FISCAL_QTR,
coalesce(c.revenue,0) + coalesce(d.revenue,0) +
coalesce(e.revenue,0)   revenue
from
(select a.TERRITORY,TRANS_DT,r.FISCAL_YEAR,r.FISCAL_QTR, sum(revenue)
revenue
from AFF_TERR_ALIGNMENT a, aar023.quarterly_revenue r
where a.ORIGIN_loc_cd=r.ORIGIN_loc_cd and a.REGION_CD != 'CAN'
and  a.FISCAL_HALF = GET_HALF_BY_QTR(r.FISCAL_QTR)
and a.FISCAL_YEAR = r.FISCAL_YEAR
group by  a.TERRITORY, TRANS_DT, r.FISCAL_YEAR
,r.FISCAL_QTR)c,
(select a.TERRITORY, TRANS_DT,r.FISCAL_YEAR, r.FISCAL_QTR, sum
(revenue) revenue
from AFF_KIAC_ACCT_ALIGNMENT a, quarterly_revenue r where
r.KIAC_ACCT_NBR = a.KIAC_ACCT_NBR and  a.FISCAL_HALF = GET_HALF_BY_QTR
(r.FISCAL_QTR)
and a.FISCAL_YEAR = r.FISCAL_YEAR and a.ORIGIN_LOC_CD=r.ORIGIN_LOC_CD
group by  a.TERRITORY,TRANS_DT,r.FISCAL_YEAR
,r.FISCAL_QTR)d ,
(select r.TRANS_DT, r.TERRITORY, r.FISCAL_YEAR, r.FISCAL_QTR, revenue
revenue from
AFF_UNASGNED_QUARTERLY_REV r)e
where
c.FISCAL_YEAR = d.FISCAL_YEAR(+) and
c.FISCAL_QTR  = d.FISCAL_QTR(+) and
c.TERRITORY = d.TERRITORY(+)
and
c.FISCAL_YEAR = e.FISCAL_YEAR(+) and
c.FISCAL_QTR  = e.FISCAL_QTR(+) and
c.TERRITORY = e.TERRITORY(+)
and
c.TRANS_DT = d.TRANS_DT(+) and
c.TRANS_DT = e.TRANS_DT(+)
) rev,
(select '8-8-19-29-0-0-0' as
territory,TRANS_DT,r.FISCAL_YEAR,r.FISCAL_QTR, sum(revenue) revenue
from quarterly_revenue r where
r.ORIGIN_loc_cd in (select a.ORIGIN_loc_cd from
AFF_TERR_ALIGNMENT a where a.FISCAL_HALF = GET_HALF_BY_QTR
(r.FISCAL_QTR) and
a.FISCAL_YEAR = r.FISCAL_YEAR and a.REGION_CD='CAN')
group by  '0-0-0-0-0-0-0', TRANS_DT,r.FISCAL_YEAR ,r.FISCAL_QTR)can
where
g.FISCAL_YEAR = can.FISCAL_YEAR(+) and
g.FISCAL_QTR  = can.FISCAL_QTR(+) and
g.TERRITORY = can.TERRITORY(+)
and
g.FISCAL_YEAR = rev.FISCAL_YEAR(+) and
g.FISCAL_QTR  = rev.FISCAL_QTR(+) and
g.TERRITORY = rev.TERRITORY(+)

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