Prodecure update

Question

Hi
this below code is written to update the prices
PROCEDURE upd_quot(p_quot_number number, p_quot_version number) is
     cursor c is select distinct aql.line_list_price, line_number
     from aso_quote_lines_all aql, aso_quote_headers_all aqh, qp_list_headers qlh, qp_list_lines_v qlv,
mtl_system_items msi
     where aqh.quote_header_id      = aql.quote_header_id
     and aqh.price_list_id                = qlh.list_header_id
     and aqh.price_list_id                = qlv.list_header_id
     and aql.inventory_item_id           = qlv.product_id
     and aql.inventory_item_id           = msi.inventory_item_id
     and qlv.product_id                = msi.inventory_item_id
     and aqh.quote_number           = p_quot_number
     and aqh.quote_version           = p_quot_version;
begin
     for i in c loop
          update aso_quote_lines_all set line_list_price = :upd_prices.line_list_price
     where inventory_item_id = :upd_prices.p_inventory_item_id;
update qp_list_lines set operand = :upd_prices.line_list_price where list_line_id = :upd_prices.p_line_list_id;
     :upd_prices.operand := :upd_prices.line_list_price;
     end loop;
end;
this procedure calling through button.
when i click update button it is updating only one line
like if thr are 4 rows then it has to update all the 4 rows, but it is doing one by one. i need some help in this issue.
example : price 1 price 2
410 450
250 210
120 99
357 467
it has to replace the price1 on price2 like
410 410
250 250
120 120
357 357
i need some help
Thanks and Regards

Answer 1

as Mr Wijk said I was a bit confused on what you were selecting
but perhaps a merge statement would be helpful in your scenario.
so your not doing a loop for your updates.
plagiarizing from SQL Cookbook by Anthony Molinaro
"You want to conditionally insert, update, or delete records depending on whether or not corresponding
records exist"
merge into aso_quote_lines t1
using ( select distinct blah blah blah) t2
on    (t1.id = t2.id and t1.price != t2.upd_price)
when  matched then
      update set t1.price = t2.upd_price