Write a SQL query to get the second highest salary from theEmployeetable. +---+---+ | Id | Salary | +---+---+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +---+---+ For example, given the above Employee table, the query should return200as the second highest salary. If t...
Write a SQL query to get the second highest salary from theEmployeetable. +---+---+ | Id | Salary | +---+---+ | 1 | 100 | | 2 | 200 | | 3 | 300 | +---+---+ For example, given the above Employee table, the second highest salary is200. If there is no second high...
Write a SQL query to get the second highest salary from the Employee table. For example, given the above Employee table, the query should return 200 as the second highest salary. I...LeetCode题解-176.second-highest-salary 编写一个 SQL 查询,获取 Employee 表中第二高的薪水(Salary) 。 Id...
思路一:where语句限定salary的取值要去掉最大值,从只有第二最大值里面寻找最大值 思路二:limit offset 语句直接选取 需要注意如果原来的表格去掉最大值后为null,则要考虑到null值的情况 代码样例: 思路一: SELECT COALESCE(MAX(Salary)) AS SecondHighestSalary FROM Employee WHERE Salary < (SELECT MAX(Salary) ...
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....
Is the logical name of a filegroup or a variable whose value equates to the logical name of a filegroup that is to be included in the backup. Under the simple recovery model, a filegroup backup is allowed only for a read-only filegroup. Note Consider using file backups when the database...
In the following diagram, the blue line represents the throughput in SQL Server, as measured by Transactions per second; the black line represents average page latch wait time. In this case, each transaction performs an INSERT into a clustered index with a sequentially increasing leading value, ...
SELECT * FROM sys.resource_stats WHERE database_name = 'userdb1' AND start_time > DATEADD(day, -7, GETDATE()) ORDER BY start_time DESC; 若要評估您的工作負載與計算大小的符合程度,您必須深入分析資源計量的每個層面:CPU、資料 I/O、記錄寫入、背景工作角色數目和工作階段數目。 以下是修訂過的...
This is the second blog of a series focused on SQL Managed Instance, where we will dive into technical topics that will help you successfully modernize your...
If no input_expression = when_expression evaluates to TRUE, the SQL Server Database Engine returns the else_result_expression if an ELSE clause is specified, or a NULL value if no ELSE clause is specified. Searched CASE expression: Evaluates, in the order specified, Boolean_expression for each...