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
这样做是取表中第二个数字为空时,即表中只有一个数字,或者全部数字都是一样的并列第一,无法返回空值 SELECT(SELECTDISTINCTSalaryFROMEmployeeORDERBYSalaryDESCLIMIT1OFFSET1)ASsecondHighestSalary
NULL) AS SecondHighestSalary 知识点总结: limit offset 使用 SELECT column_list 选择要读取的列名 FROM table1 选择表名 ORDER BY column_list 排列顺序 LIMITrow_count OFFSET offset 读取列数为 row count, offset 为跳过多少列 图片来自https://www.sqltutorial.org/sql-limit/ 注意,使用limit取得最大值最...
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. +---+---+ | 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....
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 ...
In other words, SQL Server never automatically decreases the value, only increases it. If you need to back up a TDE encrypted database with MAXTRANSFERSIZE = 65536, you must specify WITH NO_COMPRESSION or ensure that the backup compression default server configuration is set to 0. Note There...
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. The ZSTD compression algorithm is available starting with SQL Server ...
SQL_DIAG_SERVER_NAMESQLCHAR *A string that indicates the server name that the diagnostic record relates to. It is the same as the value returned for a call toSQLGetInfowith the SQL_DATA_SOURCE_NAME option. For diagnostic data structures associated with the environment handle and for diagnostic...
-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...