(Oracle)使用相关子查询时获取多列

Question

我（Scott）的目标是使用相关子查询获取经理的姓名、薪水和部门编号。 如下所示，我可以得到预期的结果，但类似的子查询已被多次使用。 有没有另一种简洁的方法（没有重复类似的模式如下）？

SELECT
    O.ENAME EMP_NAME
    ,(SELECT DISTINCT FIRST_VALUE(I.ENAME) OVER (PARTITION BY NULL ORDER BY I.SAL DESC)
        FROM SCOTT.EMP I
        WHERE I.EMPNO=O.MGR  --correlated to outer
     ) AS MGR_NAME
     ,(SELECT DISTINCT FIRST_VALUE(I.SAL) OVER (PARTITION BY NULL ORDER BY I.SAL DESC)
        FROM SCOTT.EMP I
        WHERE I.EMPNO=O.MGR  --correlated to outer
     ) AS MGR_SAL
     ,(SELECT DISTINCT FIRST_VALUE(I.DEPTNO) OVER (PARTITION BY NULL ORDER BY I.SAL DESC)
        FROM SCOTT.EMP I
        WHERE I.EMPNO=O.MGR  --correlated to outer
     ) AS MGR_DEPTNO
    from SCOTT.EMP O;

Answer 1

select  e.ename emp_name, m.ename mgr_name, m.sal mgr_sal, m.deptno mgr_deptno
from    emp e left join emp m
on      e.mgr = m.empno
order   by m.deptno, e.ename;

输出：