找第二大的数SQL-Second Highest Salary 1: 找小于最大的最大的 1 select max(Salary) from Employee where Salary<(select MAX(Salary) from Employee); 2. 排序 1 select Salary from Employee where Salary not in (select MAX(Salary)from Employee) order by Salary desc limit 1; 1 2 3 4 5 ...
where Salary not in (select max(Salary) from Employee) 思路二: SELECT IFNULL( (SELECT DISTINCT Salary FROM Employee ORDER BY Salary DESC LIMIT 1 OFFSET 1), NULL) AS SecondHighestSalary 知识点总结: limit offset 使用 SELECT column_list 选择要读取的列名 FROM table1 选择表名 ORDER BY column_...
学过For循环都知道,要先对这个循环进行计数,然后循环到我们需要的那一次再取值。那么SQL中怎么计数呢。答案是使用COUNT方法。 COUNT方法 SELECTe1.SalaryFROMEmployee e1WHERE2=(SelectCount(distinct(e2.Salary))fromEmployee e2wheree2.Salary>=e1.Salary)asSecondHighestSalary; 上面两种方法也可以用于,取任意第N位...
SQL代码: select IFNULL((select distinct(Salary) from Employee order by Salary desc limit 1,1),null) as SecondHighestSalary 学到了一个sql函数IFNULL,该函数的作用是判断查询结果集是否为空,若为空则返回第二个参数 还有一种做法,直接用两个select解决 select(select distinct(Salary) from Employee order...
I have table t1 in sql server and table t2. t1 have id,status column and t2 have id and matchid 2 column. t1 table we have 2 record id status 1 active 1 inactive and t2 table also have 2 record id matchid 2 1 32 1 we want output like ...
If there is no second highest salary, then the query should return null. 查询结果 三、SQL 语句 3.1 自己写的 SELECT a.Salary AS SecondHighestSalary FROM Employee AS a JOIN Employee AS b ON a.Salary < b.Salary GROUP BY a.Id HAVING COUNT(a.Id) = 1; 注意:这种方法是错误的,因为当没有...
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In this article, I am going to explain to you how to find the second highest salary in various ways. This is one of the most common questions asked in an SQL interview. Below are the several ways of finding the Nth highest salary: How to find the second highest salary in SQL Server ...
5. 6. 7. For example, given the above Employee table, the second highest salary is200. If there is no second highest salary, then the query should returnnull. 解决方案如下: # Write your MySQL query statement below select max(Salary) ...
Write a SQL query to get the second highest salary from the Employee +---+---+ | Id | Salary | +---+---+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +---+---+ For example, given the above Employee table, the second highest salary is 200...