Select query taking time

Question

THe following query is taking time. Is there anyway better to write this query.
SELECT PROGRAM_NAME_ID ,PROGRAM_NAME,sum(balance)"Unpaid Balance"
    FROM (
SELECT DISTINCT
PROGRAM_NAME_ID ,PROGRAM_NAME,
t.billing_key billing_key,
(TUFF_GENERIC_PKG.GET_TOTAL(t.billing_key,t.program_key)+
nvl(PENALTY_INTEREST(t.billing_key,t.program_key,b.company_id,b.report_period ),0))
-PAYMENT_AMOUNT(B.COMPANY_ID,T.PROGRAM_KEY,B.REPORT_PERIOD) Balance,
Report_period,company_id
FROM  BILLING B,
PROG_SURCH T ,
mv_program_dict P
WHERE
B.BILLING_KEY=T.BILLING_KEY
AND  p.program_key= t.program_key(+)
and company_id=:p3_hide_comp
and b.SUBMIT_STATUS='S'
union
SELECT DISTINCT
PROGRAM_NAME_ID ,PROGRAM_NAME,
t.billing_key billing_key,
(TUFF_GENERIC_PKG.GET_TOTAL(t.billing_key,t.program_key)+
nvl(PENALTY_INTEREST(t.billing_key,t.program_key,b.company_id,b.report_period ),0))
-PAYMENT_AMOUNT(B.COMPANY_ID,T.PROGRAM_KEY,B.REPORT_PERIOD) Balance,
Report_period,company_id
FROM  MV_BILLING B,
MV_PROG_SURCH T ,
mv_program_dict P
WHERE
B.BILLING_KEY=T.BILLING_KEY
AND  p.program_key= t.program_key(+)
and company_id=:p3_hide_comp
order by report_period,program_name_id )
where balance>=0
GROUP BY PROGRAM_NAME_ID,PROGRAM_NAME
ORDER BY PROGRAM_NAME_ID

Answer 1

Hi,
This is totally right.
>
Being one such call. The price for calling pl/sql functions in SQL can be quite high. I'd highly recommend you find a way to incorporate the pl/sql code into the SQL query.
>
but, try with this query. I hope would help you and return the rows you want.
SELECT   program_name_id, program_name,
           SUM (  tuff_generic_pkg.get_total (billing_key, program_key)
                + NVL (penalty_interest (billing_key,
                                         program_key,
                                         company_id,
                                         report_period
                       0
         - payment_amount (company_id, program_key, report_period) balance
    FROM (SELECT program_name_id, program_name, t.billing_key, t.program_key,
                 b.company_id, b.report_period
            FROM billing b, prog_surch t, mv_program_dict p
           WHERE b.billing_key = t.billing_key
             AND p.program_key = t.program_key(+)
             AND company_id = :p3_hide_comp
             AND b.submit_status = 'S'
          UNION
          SELECT program_name_id, program_name, t.billing_key, t.program_key,
                 b.company_id, b.report_period report_period, company_id
            FROM mv_billing b, mv_prog_surch t, mv_program_dict p
           WHERE b.billing_key = t.billing_key
             AND p.program_key = t.program_key(+)
             AND company_id = :p3_hide_comp) sub
   WHERE   (  tuff_generic_pkg.get_total (billing_key, program_key)
            + NVL (penalty_interest (billing_key,
                                     program_key,
                                     company_id,
                                     report_period
                   0
         - payment_amount (company_id, program_key, report_period) >= 0
GROUP BY program_name_id, program_nameObviosly I cannot testing.
HTH -- johnxjean --