Hel me in this query

Question

dears;
in schema scott
I want many solution for this query
query for show max sal in each dept with dept name and emp name
I DO this query
select dname,ename,sal from
(select deptno,max(sal) salary from emp
group by deptno)emp1,emp,dept
where emp.deptno=dept.deptno
and (emp.sal)=emp1.salary;
but I WANT other solution
thanks In advanve

Answer 1

SQL> SELECT ename,sal,dname
  2  FROM emp e1,dept d
  3  WHERE e1.deptno=d.deptno
  4  AND (e1.sal,e1.deptno) IN (SELECT max(sal),deptno
  5                       FROM emp
  6                       GROUP BY deptno
  7                       );
ENAME                                      SAL DNAME
KING                                      5000 ACCOUNTING
SCOTT                                     3000 RESEARCH
FORD                                      3000 RESEARCH
BLAKE                                     2850 SALES
SQL> SELECT ename,sal,dname
  2  FROM emp e1,dept d
  3  WHERE e1.deptno=d.deptno
  4  AND e1.sal >= ALL(SELECT sal
  5                    FROM emp e2
  6                    WHERE e1.deptno=e2.deptno                  
  7                               )
  8  ORDER BY 3;
ENAME                                      SAL DNAME
KING                                      5000 ACCOUNTING
FORD                                      3000 RESEARCH
SCOTT                                     3000 RESEARCH
BLAKE                                     2850 SALES
SQL> ed
Wrote file afiedt.buf
  1  SELECT * FROM (
  2                SELECT ename,MAX(sal) OVER (PARTITION BY e1.deptno ORDER BY e1.sal) sal
  3                            ,dname
  4                            ,RANK()OVER (PARTITION BY e1.deptno ORDER BY e1.sal desc) rn
  5                FROM emp e1,dept d
  6                WHERE e1.deptno=d.deptno
  7                )
  8  WHERE rn=1
  9* ORDER BY 3
SQL> /
ENAME                                      SAL DNAME                  RN
KING                                      5000 ACCOUNTING              1
SCOTT                                     3000 RESEARCH                1
FORD                                      3000 RESEARCH                1
BLAKE                                     2850 SALES                   1
SQL>