Indexed Views in SQL ServerAnonymousSql Server Magazine
The usability of indexed views is limited. While all editions of SQL Server can create and consume an indexed view, it is only the Enterprise Edition and Developer Edition that will make use of them without the addition of the query hint NOEXPAND. As you'll see later, that condition limits...
顾名思义,索引视图就是建有索引的视图,这是MSSQL提供的一项技术,用于提升某些SQL语句的查询性能。索引视图上的第一个索引必须是唯一簇索引,之后,可以在视图上创建更多的非簇索引,因为视图上的簇索引存储方式和表上的簇索引一样,因此,视图上的簇索引可以提升某些查询的性能。查询优化器可以通过索引视图来加速查询的...
Assume that you have an indexed view on a table in Microsoft SQL Server 2012 or SQL Server 2014. When you run a query that contains common language runtime (CLR) functions in the WHERE clause against this view, a fatal exception...
顾名思义,索引视图就是建有索引的视图,这是MSSQL提供的一项技术,用于提升某些SQL语句的查询性能。索引视图上的第一个索引必须是唯一簇索引,之后,可以在视图上创建更多的非簇索引,因为视图上的簇索引存储方式和表上的簇索引一样,因此,视图上的簇索引可以提升某些查询的性能。查询优化器可以通过索引视图来加速查询的...
This topic describes how to create an indexed view in SQL Server 2014 by using Transact-SQL. The first index created on a view must be a unique clustered index. After the unique clustered index has been created, you can create more nonclustered indexes. Creating a unique clustered index on...
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 be NO SQL, and external access property must be NO. Common language runtime (CLR) functions can appear in the select list ...
With SQL Server 2000, the functionality of SQL Server views was expanded to provide system performance benefits. It is possible to create a unique clustered index on a view, as well as nonclustered indexes, to improve data access performance on the most complex queries. In SQL Server 2000 and...
In the other editions of SQL Server, however, the query must include the indexed view and specify the hint NOEXPAND to get the benefit of the index on the view. If your queries could benefit from having more than one index on the view, non-clustered indexes can also be created on the ...
For more information, see Create Indexed Views in the SQL Server documentation. PostgreSQL Usage PostgreSQL doesn’t support indexed views, but does provide similar functionality with materialized views. You can run queries associated with materialized views, and p...