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., Bangalore

 

**************** CAUTION - Disclaimer *****************
This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or distribute this e-mail or its contents to any other person and any such actions are unlawful. This e-mail may contain viruses. Infosys has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Infosys reserves the right to monitor and review the content of all messages sent to or from this e-mail address. Messages sent to or from this e-mail address may be stored on the Infosys e-mail system.
***INFOSYS******** End of Disclaimer ********INFOSYS***