Views can also be used when you copy data to and from SQL Server to improve performance and to partition data.Types of viewsBesides the standard role of basic user-defined views, SQL Server provides the following types of views that serve special purposes in a database....
適用於:SQL Server (SQL Server 2008 透過目前版本)、Windows Azure SQL 資料庫 (初始版本,透過目前版本)。展開資料表 資料行名稱 資料類型 描述 TABLE_CATALOG nvarchar(128) 檢視限定詞。 TABLE_SCHEMA nvarchar(128) 包含檢視的結構描述名稱。 展開資料表 重要事項 請勿使用 INFORMATION_SCHEMA 檢視來判斷物件...
A user can use this virtual table by referencing the view name in Transact-SQL statements the same way a table is referenced. This section provides the information necessary to understand, design, and create views. Expand table Topic Description Understanding Views Explains view concepts, types ...
so,. let close it with MS web site words Creating a unique clustered index on a view improves query performance because the view is stored in the database in the same way a table with a clustered index is stored. The query optimizer may use indexed views to speed up the query execution...
Any user-defined functions referenced in the view must be referenced by two-part names,<schema>.<function>. The data access property of a user-defined function must beNO SQL, and external access property must beNO. Common language runtime (CLR) functions can appear in the select list of the...
In future releases of SQL Server, Microsoft may augment the definition of any system catalog view by adding columns to the end of the column list. We recommend against using the syntax SELECT * FROM sys.<catalog_view_name> in production code because the number of columns returned might change...
兼容性视图 (Transact-SQL) 数据层应用程序视图 (Transact-SQL) 动态管理视图和函数 (Transact-SQL) 信息架构视图 (Transact-SQL) 信息架构视图 (Transact-SQL) CHECK_CONSTRAINTS (Transact-SQL) COLUMN_DOMAIN_USAGE (Transact-SQL) COLUMN_PRIVILEGES (Transact-SQL) ...
The text description of a value in the ledger_view_type column: NON_LEDGER_VIEW LEDGER_VIEW is_dropped_ledger_viewbitApplies to: Starting with SQL Server 2022 (16.x), Azure SQL Database. Indicates a ledger view that has been dropped. ...
These benefits are described in more detail in Scenarios for Using Views. Indexed Views An indexed view is a view that has been materialized. This means it has been computed and stored. You index a view by creating a unique clustered index on it. Indexed views dramatically improve the ...
This post is the third in a series on Subscription Views in SQL Server 2008 R2 Master Data Services (“MDS”). In thefirst post, I described how to create standard subscription views. In this post I will describe how to fill in the null columns in a level-ba...