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Can a view be indexed in SQL Server?
An indexed view has a unique clustered index. The unique clustered index is stored in SQL Server and updated like any other clustered index. In the developer and enterprise editions of SQL Server, the optimizer can use the indexes of views to optimize queries that do not specify the indexed view.
Can a view be indexed?
Views make queries faster to write, but they don’t improve the underlying query performance. However, we can add a unique, clustered index to a view, creating an indexed view, and realize potential and sometimes significant performance benefits, especially when performing complex aggregations and other calculations.
Why is the index not used in SQL Server?
Index on the view is still not used even if I explicitly use the view in the query. I could only get the query optimizer to use the index with noexpand hint. Note that I’m using SQL Server enterprise edition.
How to enable Indexed View in SQL Server?
SET STATISTICS IO ON; SET STATISTICS PROFILE ON; SET STATISTICS TIME ON; SELECT * FROM MySchema.myIndexedView ACB WITH (NOEXPAND) WHERE …; SELECT * FROM MySchema.myIndexedView ACB WHERE …;
How to identify and monitor unused indexes in SQL Server?
How to identify and monitor unused indexes in SQL Server. SQL Server indexes are essentially copies of the data that already exist in the table, ordered and filtered in different ways to improve the performance of executed queries. Seeks, scans and lookups operators are used to access SQL Server indexes.
How does SQL Server index usage stats work?
The dm_db_index_usage_stats DMV displays essential information about index usage, and it can be a useful tool in identifying unused SQL Server indexes. When an index is used for the first time, a new row gets created in the dm_db_index_usage_stats DMV and subsequently updated every time an index is used.