SQL Server 命名实例的服务器名为 <computer_name>\<instance_name>,如 ACCTG_SRVR\SQLEXPRESS。 以下屏幕截图显示连接到名为 SQL Server 的计算机上PracticeComputer的默认(未命名)实例。 已登录到 Windows 的用户是 Contoso 域中的 Mary。 使用 Windows 身份验证时,无法更改用户名。
Don't worry if you're new to this – we explain everything step by step and use lots of examples that you can actually try out yourself. Plus, we've included quizzes to help you practice and get even better at using SQL. So, if you're ready to learn how to manage data like a...
了解在工作負載中使用 SQL Server 查詢存放區的最佳實踐,例如使用最新的 SQL Server Management Studio 和 SQL Server 查詢效能分析工具。
Examples of breaking changesnot protectedby compatibility level are: Changed column names in system objects. In SQL Server 2012 (11.x) the columnsingle_pages_kbinsys.dm_os_sys_infowas renamed topages_kb. Regardless of the compatibility level, the querySELECT single_pages_kb FROM sys.dm_os_sy...
使用最新版 SQL Server Management Studio 在Azure SQL 数据库中使用 Query Performance Insight 将查询存储与弹性池数据库配合使用 开始进行查询性能故障排除 显示另外 9 个 适用于: SQL Server 2016(13.x)及更高版本Azure SQL 数据库 Azure SQL 托管实例 ...
When you select a collation for your server, database, column, or expression, you're assigning certain characteristics to your data. These characteristics affect the results of many operations in the database. For example, when you construct a query by using ORDER BY, the sort order of your...
2.2.4.2Before Migrating From Microsoft SQL Server or Sybase Adaptive Server To configure a Microsoft SQL Server or Sybase Adaptive Server database for migration: Ensure that the source database is accessible by the Microsoft SQL Server or Sybase Adaptive Server user that is used by SQL Developer ...
The following are examples of successful recovery situations actually encountered by Microsoft SQL Server Product Support Services personnel.Example 1: Hardware failure (CPU board)Battery backup on the caching controller maintained the data. A new computer was built and the controller and I/O subsystem...
It is a good practice to specify parameter names, both for superior readability and compatibility with future versions of the stored procedure.Avertisment Any parameter passed in the form @parameter = value with the parameter misspelled, will cause SQL Server to generate an error and prevent ...
Design for maintenance operation performance, not just query performance Specifying hardware is never easy but it is common (and good) practice when making hardware decisions to focus most of the attention on query performance for the simple reason that query performance is vital. However, it is ...