LeetCode-第二高的薪水(second-highest-salary)
阿新 • • 發佈:2018-11-05
第二高的薪水
難度 簡單
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編寫一個 SQL 查詢,獲取 Employee
表中第二高的薪水(Salary) 。
+----+--------+
| Id | Salary |
+----+--------+
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
+----+--------+
例如上述 Employee
表,SQL查詢應該返回 200
作為第二高的薪水。如果不存在第二高的薪水,那麼查詢應返回 null
+---------------------+
| SecondHighestSalary |
+---------------------+
| 200 |
+---------------------+
Solution
Language: MySQL
# Write your MySQL query statement below
select (select distinct salary from Employee order by salary desc limit 1,1) as SecondHighestSalary ;