因此,SQL Server有五个系统数据库,而不是人们想象的四个。资源数据库是第五个“隐藏”数据库,它是只读数据库,包含 SQL Server 的所有系统对象。它用于使 SQL Server 的升级过程更快、更容易。此数据库无法备份和恢复(使用传统的 SQL Server 方法),并且其数据和日志文件的位置也无法更改。它有一个固定的数据库 ...
sql server如何根据 resource_database_id 查到对应的数据库名,一、 简单查询 简单的Transact-SQL查询只包括选择列表、FROM子句和WHERE子句。它们分别说明所查询列、查询的表或视图、以及搜索条件等。例如,下面的语句查询testtable表中姓名为"张三"的nickname字
Applies to:SQL Server The Resource database is a read-only database that contains all the system objects that are included with SQL Server. SQL Server system objects, such as sys.objects, are physically persisted in the Resource database, but they logically appear in the sys schema of every...
In SQL Server 2008 and above, resource database is aread-only databaseand every instance has only one. It was created when the database instance installed. Because the resource database is read-only and never changed after it is created, when the resource database is damaged or lost, we ...
SELECT SERVERPROPERTY('ResourceVersion'); GO 若要确定Resource数据库的上次升级时间,请使用: SELECT SERVERPROPERTY('ResourceLastUpdateDateTime'); GO 若要访问系统对象的 SQL 定义,请使用 OBJECT_DEFINITION 函数: SELECT OBJECT_DEFINITION(OBJECT_ID('sys.objects')); GO ...
the resource database is no longer tied to the master database, and exists in the Binn folder instead. So basically, the resource database is a part of the instance binaries from SQL 2008 onwards. This is why, in case of SQL 2008 and 2008 R2, you need to patch both th...
Imports a bacpac into a new database. Request Path: /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Sql/servers/{serverName}/importOperation Id: Servers_ImportDatabaseDefault Api Version: 2023-05-01-previewResource:
Azure SQL Database single database This article provides the detailed resource limits for single databases in Azure SQL Database using the vCore purchasing model. For elastic pool vCore resource limits, vCore resource limits - elastic pools. For limits of the logical server in Azure, see Overvie...
Applies to: SQL Server Azure SQL Managed Instance You can use resource governor to manage Database Engine resource consumption and enforce policies for user workloads. Resource governor lets you reserve or limit the amount of CPU, memory, and physical I/O that user query workloads can use. You...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Analytics Platform System (PDW) SQL database in Microsoft Fabric This article helps you decide when and how to perform index maintenance. It covers concepts such as index fragmentation and page density, and their impact on ...