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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Running Steve's Code

Can you run this code in any of your SQL Server 2019 databases without error? 

CREATE OR ALTER PROCEDURE [dbo].[StevesAmazingProc]
AS
    
        SELECT Consumer_ID ,
               Trend_Category ,
               Bit_Trace
        FROM    NewWorldDB.dbo.MarketTrend;
    
GO

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