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:
Jan. 23, 2007
Filed:
Nov. 05, 2002
Markos Zaharioudakis, Los Gatos, CA (US);
Mir Hamid Pirahesh, San Jose, CA (US);
Roberta JO Cochrane, Los Gatos, CA (US);
George Lapis, San Jose, CA (US);
Yang Sun, Morgan Hill, CA (US);
Markos Zaharioudakis, Los Gatos, CA (US);
Mir Hamid Pirahesh, San Jose, CA (US);
Roberta Jo Cochrane, Los Gatos, CA (US);
George Lapis, San Jose, CA (US);
Yang Sun, Morgan Hill, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, apparatus, and article of manufacture for optimizing database queries using an automatic summary table. A query is analyzed using matching and compensation tests between the query at least one correlated subquery within the query and the automatic summary table to determine whether expressions occurring in the query, but not in the automatic summary table, can be derived using the automatic summary table. If so, the query is rewritten so that the automatic summary table is used.