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:
Sep. 08, 2009
Filed:
Sep. 23, 2003
Yuan-chi Chang, New York, NY (US);
Matthew L. Hill, Yonkers, NY (US);
Yuan-Chi Chang, New York, NY (US);
Matthew L. Hill, Yonkers, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Methods and apparatus are provided for rewriting queries during a database query processing operation to include auxiliary attributes not included in the original query, thus improving processing efficiency. For example, in one aspect of the invention, a technique for rewriting a query in a query processing operation includes the following steps. First, the query is processed in accordance with at least a portion of a data set, producing query results. Second, data attributes from the query results are analyzed. Finally, at least one new predicate from at least one auxiliary data attribute is appended on the query.