local selectivity estimation - computing frequency of predicates

["Avdhoot Kishore Saple" <Avdhoot_Saple@xxxxxxxxxxx>]

Dear All.

 

How to compute the frequency of predicate (e.g. Salary > $70000) in an SQL query from a DB’s pre-defined indexes?”. I’m specifically looking at how to retrieve information about indices (like number of pages at each level of index, range of attribute values etc.)

 

Any suggestions regarding the same would be great

 

Thanks,

 

Avdhoot K. Saple
Junior Research Associate
High Performance & Grid Computing
Infosys Technologies Ltd.

 

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