What is an index in SQL Server?

Posted by Surya sasidhar on Stack Overflow See other posts from Stack Overflow or by Surya sasidhar
Published on 2010-06-02T06:26:54Z Indexed on 2010/06/03 5:34 UTC
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sql

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indexing

What is index in SQL? Can you explain or reference to understand clearly?

Where should I use an index?

I searched in Stack Overflow, but it is still not clear to me.

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