输入:{"headers":{"Employee":["Id","Salary"]},"rows":{"Employee":[[1,100]]}}输出:{"headers":["SecondHighestSalary"],"values":[]}预期:{"headers":["SecondHighestSalary"],"values":[[null]]} 恍然大悟,原来是没有考虑”如果不存在第二高的薪水,那么查询应返回 null“这个情况,找到问题就好...
+---+---+ For example, given the above Employee table, the second highest salary is200. If there is no second highest salary, then the query should returnnull. https://leetcode.com/problems/second-highest-salary/ 首先MySQL不支持top语法,要用limit代替。 selectSalaryfromEmployeeorderbySalarydes...
select max(Salary) as SecondHighestSalary from Employee 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...
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 ...
NTH_VALUE(employee_name, 2) OVER ( ORDER BY salary DESC ) second_highest_salary FROM basic_pays; 以下查询查找每个部门中薪水第二高的员工: select employee_name,department,salary ,nth_value(employee_name,2)over(partition by department order by salary DESC RANGE BETWEEN unbounded preceding and unbo...
Group By and it's Highest Value using SQL Query In the table below, how do I group by Unit and then get the highest value from Quantity of that group? I have put 21 in row 4 under HighestValue column since its the highest value among all records in Unit ...
For information about viewing the current value of this option, see View or Change Server Properties. For information about using backup compression with Transparent Data Encryption (TDE) enabled databases, see the Remarks section. COMPRESSION Explicitly enables backup compression. NO_COMPRESSION ...
-Name"SQL Server (SQL2017AG)"|Set-ClusterParameter-Name"SqlDumperDumpPath"-Value"C:\temp"Get-ClusterResource-Name"SQL Server (SQL2017AG)"|Set-ClusterParameter-Name"SqlDumperDumpFlags"-Value296Get-ClusterResource-Name"SQL Server (SQL2017AG)"|Set-ClusterParameter-Name"SqlDumperDumpTimeOut"-Value...
A value of0means dynamic sampling will not be done. A value of1(the default) means dynamic sampling will be performed if all of the following conditions are true: There is more than one table in the query. Some table has not been analyzed and has no indexes. ...
AI代码解释 val tableEnv=StreamTableEnvironment.create(env) TableEnvironment 是 flink 中集成 Table API 和 SQL 的核心概念,所有对表的操作都基于 TableEnvironment 1. 注册 Catalog 2. 在 Catalog 中注册表 3. 执行 SQL 查询 ...