The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 2010
Filed:
Dec. 02, 2005
Florian Waas, Seattle, WA (US);
Jueigen Thomas, Bellevue, WA (US);
Eric N. Hanson, Bellevue, WA (US);
Cesar A. Galindo-legaria, Redmond, WA (US);
Florian Waas, Seattle, WA (US);
Jueigen Thomas, Bellevue, WA (US);
Eric N. Hanson, Bellevue, WA (US);
Cesar A. Galindo-Legaria, Redmond, WA (US);
Microsoft Cororation, Redmond, WA (US);
Abstract
A method of accumulating and aggregating statistics concerning the use of database table indexes includes using a plurality of counters to register index use. The plurality of counters allow multiple instances of index usage to be recorded simultaneously. A missing index may be detected using an optimal index in a query plan. The optimal index is compared against the available indexes to determine if an index is missing. Statistics may be gathered against the used and missing indexes.