Re: Index - To use OR Not ?

Clustering factor for indexes

VIVEK_SHARMA wrote:

> Gaja Wrote in his Book 101 Performance Tuning
>
>
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> "When Running an SQL Query Avoid using Indexes when an index scan
> performs More Block Visitations Than a Full Table Scan"
>
>
>
> Qs. How is the Number of Block Visitations to be Found for Both the
> Index Scan & Full Table Scan ?
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>
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>

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