1. Example of complicatedSQLusing join,innerjoin,andself join topresentareportoninvoices$
amountsspentagainsttheirPurchase Order. The resultisdisplayedonPage 3.
selectpo_id,
vendor,
po_number,
po_short_description,
po_type,
po_amount,
inv_total_pending,
inv_total_paid,
inv_total_rejected,
inv_total,
cast(round(nvl(inv_total/po_amount,0),2)*100as varchar(10))||'%'percent
from
(selectb.po_id,
b.vendor,
b.po_number,
b.po_short_description,
b.po_type,
b.po_amount,
h.inv_total_pending,
h.inv_total_paid,
h.inv_total_rejected,
h.inv_total
from
(selectpo.po_id,vendor,po_number,po_short_description,po_type,sum(po_det_amt) po_amount
frompo,po_details
where po.po_id=po_details.po_id
and po_details.po_status<>'CLOSED'
and po_details.work_order_numberin(selectwo_xref.wo_number_idfromwo_xref,project
where wo_xref.wo_number_id=project.work_order_number
and project.project_number=nvl(substr(:F101_FPC_NUMBER,1,10),project.project_number))
groupby po.po_id,vendor,po_number,po_short_description,po_type)b,
(selectf.vendor,
f.po_number,
f.inv_total_paid,
f.inv_total,
f.inv_total_pending,
g.inv_total_rejected
from
(selectd.vendor,
d.po_number,
d.inv_total_paid,
d.inv_total,
inv_total_pending
from
(selecta.vendor,

2. a.po_number,
inv_total_paid,
inv_total
from
(selectvendor,po_number,sum(nvl(inv_det_amount,0))inv_total
frominvoice,invoice_details,project
where invoice.inv_id=invoice_details.inv_id
and invoice_details.work_order_number=project.work_order_number
and project.project_number=nvl(:F101_FPC_NUMBER,project.project_number)
groupby vendor,po_number)a,
(selectinvoice.vendor,
invoice.po_number,
sum(nvl(inv_det_amount,0))inv_total_paid
frominvoice,invoice_details,project
where invoice.inv_id=invoice_details.inv_id
and invoice_details.work_order_number=project.work_order_number
and project.project_number=
nvl(substr(:F101_FPC_NUMBER,1,10),project.project_number)
and invoice.inv_status='PAID'
groupby vendor,po_number)c
where a.po_number=c.po_number(+))d,
(selectinvoice.vendor,
invoice.po_number,
sum(nvl(inv_det_amount,0))inv_total_pending
frominvoice,invoice_details,project
where invoice.inv_id=invoice_details.inv_id
and invoice_details.work_order_number=project.work_order_number
and project.project_number=
nvl(substr(:F101_FPC_NUMBER,1,10),project.project_number)
and invoice.inv_status='PENDING'
groupby vendor,po_number)e
where d.po_number=e.po_number(+))f,
(selectinvoice.vendor,
invoice.po_number,
sum(nvl(inv_det_amount,0))inv_total_rejected
frominvoice,invoice_details,project
where invoice.inv_id=invoice_details.inv_id
and invoice_details.work_order_number=project.work_order_number
and project.project_number=
nvl(substr(:F101_FPC_NUMBER,1,10),project.project_number)
and invoice.inv_status='REJECTED'
groupby vendor,po_number)g
where f.po_number=g.po_number(+))h
where b.po_number=h.po_number(+))
where po_amount<> 0
orderby round(nvl(inv_total/po_amount,0),2)*100DESC

3. And the resultlooks like: