With out using order by clause

display the details of the employees with sal in descending order, without using order by clause

Don't forget that it's just for fun :)Well it's not entirely for fun :-)
There are real life users who might have real production problems and the rely and input/feedback from this forum.
I do not :)You spread untested answers/knowledge that might be wrong.
I can't imagine where you can see cartesian. It's
equijoin by primary key.I suggest you test it.
JFUI hierarchy is built after joining. And this
hierarchy is bamboo-tree. So result must be sorted
acording hierarchy.I know what hierarchical ordering is :-)
And here's a little test i did on your behalf, on the EMP table :-)
select e1.*
from e e1,
( select e2.id, count(*) as rn from e e2, e e3
where e3.sal >= e2.sal
and e3.id >= e2.id
group by e2.id
) e4
where e1.id = e4.id
start with e4.rn = 1
connect by e4.rn = prior e4.rn + 1
SQL*Plus: Release 10.1.0.4.2 - Production on Wed Jul 25 16:02:19 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Enter user-name: scott/tiger
Connected to:
Oracle Database 10g Release 10.2.0.1.0 - Production
SCOTT@ORCL> set lines 1000
SCOTT@ORCL>
SCOTT@ORCL>
SCOTT@ORCL> select emp1.*
2    from emp emp1,
3    ( select emp2.empno, count(*) as rn from emp emp2, emp emp3
4        where emp3.sal >= emp2.sal
5          and emp3.empno >= emp2.empno
6        group by emp2.empno
7    ) emp4
8    where emp1.empno = emp4.empno
9    start with emp4.rn = 1
10    connect by emp4.rn = prior emp4.rn + 1;
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7839 KING       PRESIDENT            17-DEC-80       5000                    10
      7844 TURNER     SALESMAN        7698 08-SEP-81       1500          0         30
      7788 SCOTT      ANALYST         7566 09-DEC-82       3000                    20
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7876 ADAMS      CLERK           7788 12-JAN-83       1100                    20
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7900 JAMES      CLERK           7698 03-DEC-81        950                    30
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7902 FORD       ANALYST         7566                 3000                    20
      7844 TURNER     SALESMAN        7698 08-SEP-81       1500          0         30
      7788 SCOTT      ANALYST         7566 09-DEC-82       3000                    20
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7876 ADAMS      CLERK           7788 12-JAN-83       1100                    20
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7900 JAMES      CLERK           7698 03-DEC-81        950                    30
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7934 MILLER     CLERK           7782                 1301                    10
      7844 TURNER     SALESMAN        7698 08-SEP-81       1500          0         30
      7788 SCOTT      ANALYST         7566 09-DEC-82       3000                    20
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM     DEPTNO
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7876 ADAMS      CLERK           7788 12-JAN-83       1100                    20
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
      7900 JAMES      CLERK           7698 03-DEC-81        950                    30
      7566 JONES      MANAGER         7839 02-APR-81       2975                    20
      7698 BLAKE      MANAGER         7839 01-MAY-81       2850                    30
      7782 CLARK      MANAGER         7839 09-JUN-81       2450                    10
42 rows selected.
SCOTT@ORCL>Regards,
Tony

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Difference Ref cursor with/with out using clause

Hi everyone,
When I am using dynamic sql with USING clause ,the results are not sorted in Ascending order.
DECLARE
TYPE emp_refcursor IS REF CURSOR;
emp_rc emp_refcursor;
TYPE v_emp_id IS TABLE OF number INDEX BY PLS_INTEGER;
TYPE v_last_name IS TABLE OF varchar2(50) INDEX BY binary_integer;
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When I use dynamic sql with out USING cluase,results are sorted in Ascending order.
DECLARE
TYPE emp_refcursor IS REF CURSOR;
emp_rc emp_refcursor;
TYPE v_emp_id IS TABLE OF number INDEX BY PLS_INTEGER;
TYPE v_last_name IS TABLE OF varchar2(50) INDEX BY binary_integer;
V_empno v_emp_id;
v_ename v_last_name;
p_deptno number := &U_DEPTNO;
v_limit number := 10;
v_ordcolumn varchar2(20) := 'employee_id';
v_stmt varchar2(1000);
BEGIN
v_stmt :=
'select employee_id,last_name from employees
where department_id = '||p_deptno ||
' order by '||v_ordcolumn;
dbms_output.put_line(v_stmt);
OPEN emp_rc FOR v_stmt;
LOOP
FETCH emp_rc BULK COLLECT INTO v_empno,v_ename LIMIT v_limit;
EXIT WHEN v_empno.count = 0;
FOR I IN v_empno.first .. v_empno.last
LOOP
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END LOOP;
END LOOP;
END;
P.S :---- department_id (used) = 50;
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--------------------------------------------------------------------------------

Hi sundar,
I am new to oracle and learning/trying to get the same output by using differnt methods,rather than using FOR LOOP ,I tried to use ref cursor with dynamic sql.I am in a belief that ref cursor's with dynamic sql are faster than FOR LOOP,irrespective of the size of data.Can you correct me if I am wrong.
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