SCOTT>select ename,sal 2 from emp e, 3 (select deptno,avg(sal) avg_sal from emp group by deptno) s 4 where e.deptno=s.deptno and e.sal>s.avg_sal; ENAME SAL ---------- ---------- BLAKE 2850 ALLEN 1600 FORD 3000 SCOTT 3000 JONES 2975 KING 5000 6 rows selected. SCOTT>select ename,sal from (select rownum no,e.* from emp e where rownum<=8) where no >=5 order by sal desc; ENAME SAL ---------- ---------- SCOTT 3000 BLAKE 2850 CLARK 2450 MARTIN 1250 SCOTT>select * from (select * from emp order by sal desc) where rownum<=3; EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO ---------- ---------- --------- ---------- --------- ---------- ---------- ---------- 7839 KING PRESIDENT 17-NOV-81 5000 10 7788 SCOTT ANALYST 7566 19-APR-87 3000 20 7902 FORD ANALYST 7566 03-DEC-81 3000 20 SCOTT>select * from 2 (select row_number() over(partition by deptno order by sal desc) no,ename,sal,deptno 3 from emp) 4 where no<=2 5 ; NO ENAME SAL DEPTNO ---------- ---------- ---------- ---------- 1 KING 5000 10 2 CLARK 2450 10 1 SCOTT 3000 20 2 FORD 3000 20 1 BLAKE 2850 30 2 ALLEN 1600 30 6 rows selected.