Fine tuning the cursor

Question

I am using two cursors in my Pro*C applicatioin
exec sql declare cur_open_act cursor for
select distinct d.member_number,
a.account_number,
a.registration_type,
f.registration_desc,
a.office_code,
a.open_flag,
a.date_opened,
a.state,
a.restriction_code,
a.restriction_date,
nvl(c.book_shares, 0) +
nvl(c.memo_book_shares, 0) +
nvl(b.non_company_sweep_balance, 0) +
nvl(a.cash_td_balance, 0) +
nvl(a.cash_sd_balance, 0) +
nvl(a.margin_td_balance, 0) +
nvl(a.margin_sd_balance, 0)
) as balance
from br_accounts a,
(select account_number,
sum(sweep_td_balance) non_company_sweep_balance
from br_sweep_accounts
group by account_number) b,
stars_accounts c,
br_member_accounts d,
br_office_codes e,
company_registration_types f
where a.account_number = b.account_number (+)
and a.account_number = d.account_number
and a.sweep_fund_number = c.fund_number (+)
and a.sweep_account_number = c.account_number (+)
and a.registration_type = f.registration_type (+)
and a.office_code = e.office_code
and a.open_flag='Y'
and d.relationship_code in ('PRI','RET','TTE')
and e.managed_product_ind != 'Y';
exec sql declare cur_close_act cursor for
select distinct d.member_number,
a.account_number,
a.registration_type,
f.registration_desc,
a.office_code,
a.open_flag,
a.date_opened,
a.state,
a.restriction_code,
a.restriction_date,
nvl(c.book_shares, 0) +
nvl(c.memo_book_shares, 0) +
nvl(b.non_company_sweep_balance, 0) +
nvl(a.cash_td_balance, 0) +
nvl(a.cash_sd_balance, 0) +
nvl(a.margin_td_balance, 0) +
nvl(a.margin_sd_balance, 0)
) as balance
from br_accounts a,
(select account_number,
sum(sweep_td_balance) non_company_sweep_balance
from br_sweep_accounts
group by account_number) b,
stars_accounts c,
br_member_accounts d,
br_office_codes e,
company_registration_types f
where a.account_number = b.account_number (+)
and a.account_number = d.account_number
and a.sweep_fund_number = c.fund_number (+)
and a.sweep_account_number = c.account_number (+)
and a.registration_type = f.registration_type (+)
and a.office_code = e.office_code
and a.open_flag='N'
and d.relationship_code in ('PRI','RET','TTE')is
and e.managed_product_ind != 'Y'
and (
nvl(c.book_shares, 0) +
nvl(c.memo_book_shares, 0) +
nvl(b.non_company_sweep_balance, 0) +
nvl(a.cash_td_balance, 0) +
nvl(a.cash_sd_balance, 0) +
nvl(a.margin_td_balance, 0) +
nvl(a.margin_sd_balance, 0)
) != 0;
The query used is redundant for the most part and is shown below
select distinct d.member_number,
a.account_number,
a.registration_type,
f.registration_desc,
a.office_code,
a.open_flag,
a.date_opened,
a.state,
a.restriction_code,
a.restriction_date,
nvl(c.book_shares, 0) +
nvl(c.memo_book_shares, 0) +
nvl(b.non_company_sweep_balance, 0) +
nvl(a.cash_td_balance, 0) +
nvl(a.cash_sd_balance, 0) +
nvl(a.margin_td_balance, 0) +
nvl(a.margin_sd_balance, 0)
) as balance
from br_accounts a,
(select account_number,
sum(sweep_td_balance) non_company_sweep_balance
from br_sweep_accounts
group by account_number) b,
stars_accounts c,
br_member_accounts d,
br_office_codes e,
company_registration_types f
where a.account_number = b.account_number (+)
and a.account_number = d.account_number
and a.sweep_fund_number = c.fund_number (+)
and a.sweep_account_number = c.account_number (+)
and a.registration_type = f.registration_type (+)
and a.office_code = e.office_code
and d.relationship_code in ('PRI','RET','TTE')is
and e.managed_product_ind != 'Y'
Is there a more efficient way other than using 2 separate cursors?
I don't want to use the redundant portion as a single cursor since it affects the performance.
Edited by: user9285722 on Apr 1, 2011 4:43 PM

Answer 1

Hi,
Why dont you just use the 1st cursor and along with what you do with the first cursor, if balance!=0 then do what you do with second cursor.
I dont know how you do in pro*c, but here is the algorithm.
open cur_open_act;
loop
-- Do your operations that you do with cursor1.
---Now along with that
IF cur_open_act.balance != 0 then
----- Do your operations that you do with cursor2.
END IF;
end loop;G.