leetcode 176. Second Highest Salary
2016-06-05 15:22
501 查看
Write a SQL query to get the second highest salary from the
For example, given the above Employee table, the second highest salary is
is no second highest salary, then the query should return
找到表中第二大的值
注意查询出来的列名为"SecondHighestSalary",如果没有第二大的值返回null
select IFNULL (
(select Salary
from Employee
group by Salary
order by Salary DESC
limit 1,1),null
) as SecondHighestSalary
Employeetable.
+----+--------+ | Id | Salary | +----+--------+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +----+--------+
For example, given the above Employee table, the second highest salary is
200. If there
is no second highest salary, then the query should return
null.
找到表中第二大的值
注意查询出来的列名为"SecondHighestSalary",如果没有第二大的值返回null
select IFNULL (
(select Salary
from Employee
group by Salary
order by Salary DESC
limit 1,1),null
) as SecondHighestSalary
相关文章推荐
- leetcode 179 Largest Number
- leetcode 24 Swap Nodes in Pairs
- leetcode 2 Add Two Numbers 方法1
- leetcode 2 Add Two Numbers 方法2
- leetcode----Longest Substring Without Repeating Characters
- [LeetCode]47 Permutations II
- [LeetCode]65 Valid Number
- [LeetCode]123 Best Time to Buy and Sell Stock III
- [LeetCode] String Reorder Distance Apart
- [LeetCode] Sliding Window Maximum
- [LeetCode] Find the k-th Smallest Element in the Union of Two Sorted Arrays
- [LeetCode] Determine If Two Rectangles Overlap
- [LeetCode] A Distance Maximizing Problem
- leetcode_linearList
- leetcode_linearList02
- 021-Merge Two Sorted Lists(合并两个排好序的单链表);leetcode
- LeetCode[Day 1] Two Sum 题解
- LeetCode[Day 2] Median of Two Sorted Arrays 题解
- LeetCode[Day 3] Longest Substring Without... 题解
- LeetCode [Day 4] Add Two Numbers 题解