标签:Salary 表中 +----+--------+ Employee sql 薪资 query select
176. Second Highest Salary Easy 要求:返回表中薪资第二高数据Write a SQL query to get the second highest salary from the Employee
table.
+----+--------+ | Id | Salary | +----+--------+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +----+--------+
For example, given the above Employee table, the query should return 200
as the second highest salary. If there is no second highest salary, then the query should return null
.
+---------------------+ | SecondHighestSalary | +---------------------+ | 200 | +---------------------+
select (
select distinct Salary
from
Employee
order by Salary desc limit 1,1) as 'SecondHighestSalary'
177.
要求:返回表中薪资第N高数据 (与上方方法相似,但是需要注意索引是从0开始,所以要将set N = (N-1);
CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
BEGIN
set N = (N-1);
RETURN (
# Write your MySQL query statement below.
select (select distinct Salary from Employee order by Salary desc limit N,1 )as 'getNthHighestSalary'
);
END
标签:Salary,表中,+----+--------+,Employee,sql,薪资,query,select 来源: https://www.cnblogs.com/bocaimao/p/13752656.html
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