Extra-Wide Covering Indexes

Extra-Wide Covering Indexes

- Details

SQL Server indexes are constrained to a maximum width of 900 bytes. In this video you'll learn how to get around that limit using T-SQL in order to create indexes that can be used for a wide variety of performance purposes - including 'extra wide' covering indexes.

This Video Covers

Indexes, the SQL Server Storage Engine, and T-SQL tips and tricks.


Video Length: 07:55
Skill Level: 400 - Guru
Series: Tips and Tricks
Author/Presenter: Michael K. Campbell
Applies to SQL Server: 2000, 2005, and 2008

Tags: Tips and Tricks, Indexing, T-SQL, and Storage Engine


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Developer 40
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- Comments

Creating unique indexes on checksum columns is a bit "dangerous". It is possible that two different values can produce the same hashed value, and the unique index will give an error when it shouldn't

theworm - December 04, 2009.

what a clean explanation.. keep it up..

sathish dba - July 16, 2014.

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