Filtered Indexes

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Introduction to SQL Server Filtered Indexes

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SQL Server filtered indexes can save space and improve performance if they are used properly. Under what circumstances can they be used? When are they most effective, and what sort of performance gain or space-saving is likely? How does a filtered index affect the choice of execution plan? Seth Delconte explores these questions with practical experiments.

2013-05-06

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Question of the Day

The String Distance I

In SQL Server 2025, what is returned by this code: 

SELECT EDIT_DISTANCE('Steve', 'Stan')
Assume preview features are enabled.

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