Question

有人可以提出创新的查询来选择第二高薪，来自表格“EMP”，其中包含三个“NOT NULL”字段，sal（薪水），姓名，empno（员工编号）？

我有一个：

Select sal 
from EMP A 
where 1 = (select count(DISTINCT SAL) from EMP B whre A.sal < B.sal);

select DISTINCT sal 
from emp a 
where 1 = (select count(DISTINCT sal) from emp b where a.sal < b.sal);

Answer 1

select empno, 
       name,
       salary
from (
   select empno, 
          name,
          salary, 
          dense_rank() over (order by salary desc) as rnk
   from employee
) t
where rnk = 2;

Answer 2

SOF已经回答了这个问题，你必须决定它们是否足够创新以满足你的需求。

What is the simplest SQL Query to find the second largest value?

How to get second largest or third largest entry from a table

SELECT emp_salary,R 
  FROM (SELECT ROWNUM R,emp_salary 
          FROM (SELECT emp_salary 
                  FROM Employee 
                 ORDER BY emp_salary DESC
               )
        ) 
 WHERE R=2

这应该按你的意愿工作。您可以替换R的值来查找任何值。 R = 2给出第二高，R = 3给出第三高。

你可以在这里试试小提琴http://sqlfiddle.com/#!4/a6f42/14

Answer 3

查询以找到第二高薪。

SELECT * FROM EMP WHERE SAL IN(SELECT MAX(SAL) FROM EMP WHERE SAL NOT IN (SELECT MAX(SAL) FROM EMP));

Answer 4

SELECT * FROM EMP A
WHERE 2= (SELECT COUNT(*) FROM EMP B WHERE B.SAL >=A.SAL)

如果2名员工的薪水高于第二名，那么使用3之后的where子句而不是2。

Answer 5

select top (1) sal from Emp where sal<(select max(sal) from emp) order by sal desc

在上面的查询中，我们首先按降序对所有工资进行排序，以便在顶部获得最高薪水，然后我们选择最高薪水，该薪水低于该栏目中的最高薪水。

Answer 6

SELECT MAX(esalary)
FROM emp 
WHERE esalary < 
(SELECT MAX(esalary)
FROM emp); 

SELECT MAX(esalary) 
FROM emp 
WHERE esalary NOT IN 
(SELECT MAX(esalary)
FROM emp);

Answer 7

这是最有利的面试问题。你可以用不同的方式解决这个问题 - 查询1：

select MAX(Sal) from Employee WHERE Sal NOT IN (select MAX(Sal) from Employee );

查询2：

WITH CTE AS (
SELECT  Ename, sal, 
ROW_NUMBER() OVER(ORDER BY sal DESC) as RN
FROM Employee
)
SELECT Ename, sal
FROM CTE
WHERE RN = 2

查询3：如果你想获得第N个最高薪水，你只需要提到N（1/2/3/4 / .. N）代替2。

select A.Ename, A.sal from Employee A
where 2 = (select count(*) from Employee B where B.EmpNo >= A.EmpNo)

你可以在这里找到更多答案。 https://knowledgebase.techandmate.com/answers/55

谢谢，

Answer 8

;WITH cte
AS (
    SELECT *,
        ROW_NUMBER() OVER (
            ORDER BY [salary] DESC
            ) AS rowid
    FROM [Employee].[DimEmployeeDetails]
    )
SELECT *
FROM cte
WHERE rowid = 2

有人可以建议从员工表中选择第二高薪的创新查询吗？

8 个答案: