下列範例指出目前使用者的 SQL Server 登入是否為系統管理員 (sysadmin) 固定伺服器角色的成員。 SQL 複製 IF IS_SRVROLEMEMBER ('sysadmin') = 1 print 'Current user''s login is a member of the sysadmin role' ELSE IF IS_SRVROLEMEMBER ('sysadmin
00:00- Intro 00:30- What is SQL Server? 01:05- Where can you install it? 01:40- SQL Editions 02:15- Databases 02:43- System Databases 03:27- Conclusion Recommended resources SQL Server | Microsoft Data platform Developer Azure SQL Server...
The data dictionary becomes a guide book, per se, for SQL Server to use to access your data. Simply put, without the data dictionary, though SQL Server would know and understand the SQL language, it wouldn’t know about your database tables and columns; therefore, it wouldn’t be able ...
With SQL Server on Linux containers, you can deploy a SQL Server Linux container to AKS using Helm charts.Lưu ý You can also set up SQL Managed Instance enabled by Azure Arc on a Kubernetes infrastructure of your choice, which allows you to manage the service in Azure while your ...
The SQL Server allows us to install multiple instances of the SQL Server database engines. These engines run side by side and completely isolated from each other. Each database engine installation is known as the SQL Server instance. Every instance is a complete SQL Server Installation along wit...
SQL Server 2017 introduced two different architectures for availability groups. Always On availability groups provide high availability, disaster recovery, and read-scale balancing. These availability groups require a cluster manager. In Windows, the failover clustering feature ...
sp_WhoIsActive存储过程可以监视SQL Server中当前正在运行的活动。 回到顶部 介绍 如果服务器速度变慢时,数据库管理员需要不断检查SQL Server实例上正在运行的操作。 系统存储过程“sp_who”和“sp_who2”可以检查实例上所有正在运行的进程,但它们缺乏很多有助于性能监控和分析过程的有用信息,也显示了很多如系统进程...
在SQL 2005或者SQL 2008中我们是利用ROW_NUMBER开窗函数来进行分页的,关于开窗函数,我们在SQL进阶中会详细讲讲。如下: USE TSQL2012 GO DECLARE @StartRow INT DECLARE @EndRow INT SET @StartRow= 31SET @EndRow= 40SELECT [address], [city], [region] ...
本文Transact-SQL 程式碼範例使用 AdventureWorks2022 或AdventureWorksDW2022 範例資料庫,從 Microsoft SQL Server Samples 和 Community Projects(Microsoft SQL Server 範例和社群專案)首頁即可下載。 A. 搭配AVG使用ISNULL 下列範例會尋找所有產品的加權平均值。 它會取代數據表數據列Product中Weight所有NULL專案的值50。
Applies to: SQL ServerThis article introduces the Always On availability groups concepts that are central for configuring and managing one or more availability groups in the Enterprise edition of SQL Server. For the Standard edition, review Basic Always On availability groups for a single database....