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. 24, 2017
Filed:
Dec. 29, 2011
Applicant:
Ahmad Ghazal, Redondo Beach, CA (US);
Inventor:
Ahmad Ghazal, Redondo Beach, CA (US);
Assignee:
Teradata US, Inc., Dayton, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01); G06F 15/16 (2006.01);
U.S. Cl.
CPC ...
G06F 17/30483 (2013.01);
Abstract
A nested database query can be optimized by effectively representing a filtering function or operation (e.g., SQL filtering operation) of its outer sub-query by a qualification or qualify operation (e.g., SQL qualification operation) associated with at least one windowing function of at least one of its inner sub-queries. It will be appreciated that this representation can yield a modified query that would be equivalent (e.g., semantically equivalent) to the original nested query as its execution can produce the same results when optimization rules are applied.