Re: Obtains rows 10-20 in a SELECT with ORDER BY!

From: Marcelo Guelfi <mguelfi_at_10.220.5.1>
Date: 1998/05/27
Message-ID: <356C2491.B6488C77@10.220.5.1>#1/1

Fidel :

    This is a way to do what are you needing.

Create a PL/SQL program that receives 2 parameters (the min row and the max row) and declare a cursor with your select. I send you a simple example:

set serveroutput on size 1000000
set feed off
set show off
set verify off

declare

        min_value       number;
        max_value       number;
        cont            number;

        CURSOR C1 (MAX_VALUE number) IS
        SELECT username
        FROM    all_users
        WHERE rownum <= MAX_VALUE
        ORDER BY username;

begin
        cont:=1;
        min_value:=&1;
        max_value:=&2;
        FOR i in c1(max_value) LOOP
                if (cont >=min_value ) then
                        dbms_output.put_line(i.username);
                end if;
                cont:=cont+1;

        END LOOP;

end;
/

Another way is to obtain all the output of your query and process it with a script made in perl, shell, etc.

Best Regards,

        Marcelo.

MARCELO GUELFI.
IBM Uruguay.
Plaza Independencia 721, Montevideo - Uruguay. tel : (598 2) 902 3617

        (598 2) 400 6260 ext 12
Fax (598 2) 902 1144.
e-mail : mguelfi_at_acm.org

            mguelfi_at_computer.org Received on Wed May 27 1998 - 00:00:00 CDT