In SQL Server 2000, we had to use SQL Profiler trace files and Index tuning wizard. But with SQL Server 2005 DMVs, we can easily figure out what indexes we need to create which would benefit our application. The following are the missing index DMVs ( From SQL Server 2005 BOL) Let’s ...
回到SQL Server给出的Missing Index脚本: USE[AdventureWorks2008] GO CREATENONCLUSTEREDINDEX[ix1] ON[Person].[Person]([FirstName]) 可以看到SQL Server使用了Index Scan+Key Lookup,而且Key Lookup的Cost占到了87%。解决Key Lookup的问题我们可以使用Include Index,将这个字段包含到上面创建的索引中。索引修改后...
View missing index suggestions in execution plans Query execution planscan be generated or obtained in multiple ways: When writing or tuning a query, you can useSQL Server Management Studio(SSMS) todisplay the estimated execution planwithout running the query, or execute the query anddisplay an...
In Azure SQL Database, the values are unique within a single database or an elastic pool, but not within a logical server. object_idintIdentifies the table where the index is missing. equality_columnsnvarchar(4000)Comma-separated list of columns that contribute t...
In Azure SQL Database, the values are unique within a single database or an elastic pool, but not within a logical server. object_idintIdentifies the table where the index is missing. equality_columnsnvarchar(4000)Comma-separated list of columns that contribute to equality predicates of the fo...
Did you know that your SQL Server is keeping track of the indexes that it thinks you should create? The "missing index" DMVs in SQL are a really great new feature in SQL Server 2005 that (in my opinion) seem to have been underutilized so far. If you want to see if this feature ca...
Since the underlying engine is plain ole’ SQL Server, the engine can understand the TSQL, but we just block its use because we haven’t yet made it work in the multi-tenant, multi-server environment that is SQL Azure. One of the classic missing index scripts can be seen in Bart ...
From the Microsoft Press book Microsoft SQL Server 2008 Administrator's Pocket Consultant.Looking for More Tips?For more SQL Server Tips, visit the TechNet Magazine SQL Server Tips page.For more Tips on other products, visit the TechNet Magazine Tips index....
In This Section About the Missing Indexes Feature Describes the components of the missing indexes feature and how to enable or disable this feature. Using Missing Index Information to Write CREATE INDEX Statements Provides guidelines for and examples of using the information returned by the missing in...
You have a stored procedure that creates a temporary table in Microsoft SQL Server. You run a query that the stored procedure issues, and the query meets the following conditions: The query references to the temporary table...